| Patent Number |
Title Of Patent |
Date Issued |
| 7411997 |
Apparatus and method for filtering a spectrum spread communication |
August 12, 2008 |
| A filter (201) accepts spreading code sequences or the like as input sequences of a chip rate 1/D, the accepted spreading code sequences are sequentially delayed and distributed by delay circuits (202) connected in series, delay times of individual signals are an arithmetical progression |
| 7202874 |
Method for drawing object having rough model and detailed model |
April 10, 2007 |
| Detailed model data having numerous polygons and rough model data having fewer polygons are prepared for one object. A rectangular parallelepiped including the entire object is defined as a bounding box. A virtual three-dimensional space is perspective-transformed to divide an image- |
| 6692388 |
Hydraulic controller |
February 17, 2004 |
| A hydraulic controller comprises a structure composed of a separator plate 70 sandwiched between first and second valve bodies 60a and 80a, in which structure, an oil passage 103 connecting a SC shift valve 92 provided upstream and a SC backup valve 94 provided downstream is provided wit |
| 6611422 |
Electrode foil for aluminum electrolytic capacitor and method of manufacturing same |
August 26, 2003 |
| Sub pits are suppressed from branching in a surface layer of an aluminum foil, and an electrode foil for an aluminum electrolytic capacitor with a large electrostatic capacitance and a method of manufacturing the same are provided. A large number of main pits are formed by etching on bot |
| 6529194 |
Rendering method and apparatus, game system, and computer readable program product storing progr |
March 4, 2003 |
| A rendering method for generating an image similar to that with normal lighting calculation, without the calculation, when changing the position of a light source etc. in a virtual space; including waiting for an operational input of an operator or other input; changing the position of |
| 6291600 |
Method of preventing scale adhesion to the surfaces of a polymerization tank |
September 18, 2001 |
| In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous soluti |
| 6040111 |
Aromatic hydroxycarboxylic acid resins and their use |
March 21, 2000 |
| Disclosed are an aromatic hydroxycarboxylic acid resin represented by the following formula (1): ##STR1## wherein each A group is the same or different and individually represents a substituted or unsubstituted phenylene or naphthylene group, R.sup.1 represents a hydrogen atom or |
| 6010386 |
Method for removing black film from skirt of CRT front panel |
January 4, 2000 |
| A method for manufacturing a cathode ray tube includes the steps of applying a black substance to the inner surface of a glass panel, immersing the skirt inner wall and the sealing surface of the glass panel in a glass dissolving liquid for etching, and removing the black substance a |
| 5821319 |
Liquid crystal polyamide-imide copolymer |
October 13, 1998 |
| A sliding material and a heat resistant filament which primarily comprises a liquid crystal polyimide, a liquid crystal polyamide or a liquid crystal polyamide-imide copolymer having at least one recurring structural unit selected from the formula (1) and the formula (2) and is excellent |
| 5817728 |
Preparation of degradable copolymers |
October 6, 1998 |
| A preparation process of a degradable copolymer comprising carrying out dehydration polycondensation of polysaccharide (A) with one or more compounds (B) selected from the group consisting of:(b1) hydroxycarboxylic acid,(b2) polyhydroxycarboxylic acid,(b3) aliphatic polyhydric alcohol and al |
| 5798422 |
Aromatic hydroxycarboxylic acid resins and their use |
August 25, 1998 |
| Disclosed are an aromatic hydroxycarboxylic acid resin represented by the following formula (1): ##STR1## wherein each A group is the same or different and individually represents a substituted or unsubstituted phenylene or naphthylene group, R.sup.1 represents a hydrogen atom or |
| 5780704 |
Process for treating plastic product |
July 14, 1998 |
| A process for decomposing a thermoplastic polymer composition which comprises a polyhydroxycarboxylic acid base polymer as a primary component in an alkaline solution, recovering hydroxycarboxylic acid from the solution by electrodialysis or acid-precipitation and using the recovered |
| 5763537 |
Polyimide based resin composition |
June 9, 1998 |
| A is a polyimide based resin molding composition comprising 100 parts by weight of crystalline polyimide having recurring structural units of the formula (1): ##STR1## and 1.about.50 parts by weight of crystallization accelerators selected from bisimide compounds of specific stru |
| 5763098 |
Degradable aliphatic polyester formed products |
June 9, 1998 |
| Formed products such as foams, fabrics for industrial materials, filaments, nonwoven fabrics, composite materials and films which are degradable after use with ease in the natural environment are prepared by using a high molecular weight aliphatic polyester obtained by direct polycondens |
| 5714230 |
Degradable aliphatic polyester formed products |
February 3, 1998 |
| Formed products such as foams, fabrics for industrial materials, filaments, nonwoven fabrics, composite materials and films which are degradable after use with ease in the natural environment are prepared by using a high molecular weight aliphatic polyester obtained by direct polycondens |
| 5710334 |
Aromatic dinitro and diamino intermediates |
January 20, 1998 |
| This invention relates to a novel thermoplastic and amorphous polyimide which is readily soluble in organic solvent, a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the thermoplastic polyimide and |
| 5708128 |
Linear polyamic acid, linear polyimide and thermoset polyimide |
January 13, 1998 |
| Novel thermoset polyimide and composite materials comprising the thermoset polyimides and a fibrous reinforcement are prepared according to this invention. The thermoset polyimides are obtained by heat-treating a linear polyamic acid or a linear polyimide prepared by using 4,4'-bis(3 |
| 5679767 |
Purification process of aliphatic polyester |
October 21, 1997 |
| The invention is a purification process of an aliphatic polyester prepared in the presence of a catalyst from a hydroxycarboxylic acid or a cyclic ester of a hydroxycarboxylic acid, or a combination of an aliphatic polyhydric alcohol with an aliphatic polybasic acid, or a mixture of thes |
| 5677398 |
Epoxy acrylate resins and their uses |
October 14, 1997 |
| Disclosed are an epoxy acrylate resin of the general formula (1) ##STR1## and an acid-modified epoxy acrylate resin obtained by reacting the epoxy acrylate resin with a carboxylic acid or an anhydride thereof, as well as curable resin compositions containing such a resin and the cure |
| 5674953 |
Method of preventing scale adhesion to surfaces of polymerization tank with phenol-aldehyde coat |
October 7, 1997 |
| In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous soluti |
| 5637631 |
Preparation process of degradable polymer |
June 10, 1997 |
| A process for preparing a degradable copolymer of aliphatic polyester comprising the steps of reacting two or more kinds of aliphatic polyester homopolymer in the presence of a catalyst in a reaction mixture containing an organic solvent, and a degradable copolymer of aliphatic polyester |
| 5631377 |
Polyimide intermediates |
May 20, 1997 |
| This invention relates to a novel polyimide or polyimide copolymer having excellent heat resistance and greatly improved processability, and has a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the |
| 5630849 |
Dyeing method |
May 20, 1997 |
| The invention is a method of dyeing aliphatic polyester filaments with a disperse dye by selecting a dyeing temperature, dyeing pH, and dyeing time in such a way that the weight average molecular weight of the aliphatic polyester filament has a lowering ratio of 20% or less.The invention |
| 5571889 |
Polymer containing monomer units of chemically modified polyaspartic acids or their salts and pr |
November 5, 1996 |
| A polymer containing the following monomer unit (I) and/or (II): ##STR1## and a process for preparing the polymer which comprises, in ring opening reaction of the polysuccinimide, opening the ring of polysuccinimide by using an amino acid ester having an extremely high reactivity in |
| 5556711 |
Decomposable composite material |
September 17, 1996 |
| A multilayer composite consisting of aluminum and a resin composition primarily comprising a lactic acid base polymer, is disclosed. The composite material is excellent in mechanical and gas barrier properties and has characteristic of totally decomposing under alkaline conditions. |
| 5525704 |
Resin forming compositions |
June 11, 1996 |
| Disclosed is an aromatic diamine compound represented by the formula (I) ##STR1## wherein R is H or CH.sub.3. Also disclosed is a bismaleimide compound represented by the formula (IV) ##STR2## wherein R is H or CH.sub.3, A resin forming composition comprising these compounds |
| 5525682 |
Superabsorbent polymer and process for producing same |
June 11, 1996 |
| A process for preparing a novel superabsorbent polymer which is readily hydrolyzed and conform to environment by reacting a polysuccinimide with a diamine in an aqueous solution or an organic solvent to partially crosslink the polysuccinimide, and subsequently or concurrently hydroly |
| 5514748 |
Polyimide based resin composition comprising cured phenolic resins and liquid crystal polymers |
May 7, 1996 |
| A molding resin composition comprising 99.9 to 50% by weight of polyimide represented by the formula: ##STR1## and 0.1 to 50% by weight of polyether ketone resin and/or polyester resin, and more particularly comprising the polyester resin capable of forming an anisotropical molte |
| 5508377 |
Polyimide |
April 16, 1996 |
| This invention relates to a novel polyimide or polyimide copolymer having excellent heat resistance and greatly improved processability, and has a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the |
| 5506311 |
Polyimides, process for the preparation thereof and polyimide resin compositions |
April 9, 1996 |
| In one aspect, the present invention relates to polyimides having excellent thermal resistance and process for preparing the same comprising carrying out condensation of 4,4'-bis(3-aminophenoxy)biphenyl with pyromellitic dianhydride in the presence of a different diamine compound and opt |
| 5506291 |
Polyimide resin composition having excellent fatigue resistance and injection molded article of |
April 9, 1996 |
| A fatigue-resistant polyimide resin composition comprising 100 parts by weight of polyimide having from 0.5 (exclusive) to 1.0 (inclusive) mole ratio of recurring structural units represented by the formula (1) and from 0 (inclusive) to 0.5 (exclusive) mole ratio of recurring structural |
| 5496923 |
Purification process of aliphatic polyester |
March 5, 1996 |
| A purification process of an aliphatic polyester prepared in the presence of a catalyst from a hydroxycarboxylic acid or a cyclic ester of a hydroxycarboxylic acid, or a combination of an aliphatic polyhydric alcohol with an aliphatic polybasic acid, or a mixture of these compounds, |
| 5494996 |
Polyimide resin composition |
February 27, 1996 |
| A polyimide resin composition substantially comprising 1 99.9.about.50 parts by weight of polyimide having recurring structural units of the formula ##STR1## and 2 0.1.about.50 parts by weight of a polyimide which improved melt flowability and is prepared by using 1,3-bis(3-amino |
| 5484948 |
Bismaleimide compounds |
January 16, 1996 |
| Disclosed is an aromatic diamine compound represented by the formula (I) ##STR1## wherein R is H or CH.sub.3. Also disclosed is a bismaleimide compound represented by the formula (IV) ##STR2## wherein R is H or CH.sub.3, A resin forming composition comprising these compounds |
| 5484945 |
Preparation process of polysuccinimide |
January 16, 1996 |
| In the process for preparing polysuccinimide by dehydration condensation of aspartic acid in an organic solvent, polysuccinimide can be obtained simply and suitably in industry by removing a portion or more of the organic solvent from the reaction mixture while charging to the reaction |
| 5484880 |
Polyimide |
January 16, 1996 |
| The present invention relates to an amorphous polyimide or a polyimide copolymer having a requisite structural unit consisting of one or more recurring structural units represented by the formula (1): ##STR1## wherein X is a direct bond, oxygen atom or sulfur atom, and R.sub.1, R |
| 5480965 |
Readily soluble, amorphous polyimide, and preparation process of same |
January 2, 1996 |
| This invention relates to a novel thermoplastic and amorphous polyimide which is readily soluble in organic solvent, a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the thermoplastic polyimide and |
| 5476957 |
Salicylic acid derivatives |
December 19, 1995 |
| The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18.about.60 carbon atoms in molecular structure, and i |
| 5470943 |
Polyimide |
November 28, 1995 |
| This invention relates to a novel fluorine-containing polyimide or polyimide copolymer being colorless and having transparency and very low dielectric characteristics, and has a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin |
| 5461085 |
Superabsorbent polymer and process for producing same |
October 24, 1995 |
| A process for preparing a novel superabsorbent polymer which is readily hydrolyzed and conform to environment by reacting a polysuccinimide with a diamine in an aqueous solution or an organic solvent to partially crosslink the polysuccinimide, and subsequently or concurrently hydroly |
| 5459233 |
Polyimides, process for the preparation thereof and polyimide resin compositions |
October 17, 1995 |
| In one aspect, the present invention relates to polyimides having excellent thermal resistance and process for preparing the same comprising carrying out condensation of 4,4'-bis(3-aminophenoxy)biphenyl with pyromellitic dianhydride in the presence of a different diamine compound and opt |
| 5447962 |
Degradable foam and use of same |
September 5, 1995 |
| Foams comprising innumerable cells dispersed in thermoplastic polymer compositions substantially consisting of polylactic acid or a copolymer of lactic acid and hydroxycarboxylic acid and having degradable characteristics in the natural environment.The foams can be used for containers su |
| 5447901 |
Color-developing compositions and their use |
September 5, 1995 |
| A color-developing composition comprises a multi-valent-metal-modified salicylic acid resin (Resin A) and a polycondensation resin (resin B) at a weight ratio of 90-30 to 10-70. Resin A is composed of 5-35 mole % of a structural unit (I) and 65-95 mole % of at least one structural unit ( |
| 5444107 |
Degradable polymer composition |
August 22, 1995 |
| A degradable polymer composition essentially consisting of a mixture of a thermoplastic polymer composition primarily comprising polylactic acid or lactic acid-hydroxycarboxylic acid copolymer and one or more substance selected from starch and modified starch, and is a degradable polymer |
| 5434004 |
Degradable laminate composition |
July 18, 1995 |
| A laminate comprising a thermoplastic polymer essentially consisting of polylactic acid, a copolymer of lactic acid and hydroxycarboxylic acid or a mixture of polylactic acid with a copolymer of lactic acid and hydroxycarboxylic acid, and a regenerated cellulose film, paper, leather, |
| 5428126 |
Aliphatic polyester and preparation process thereof |
June 27, 1995 |
| A preparation process of aliphatic polyester having a weight average molecular weight of 15,000 or more by conducting a direct polycondensation reaction of an aliphatic polyhydric alcohol or a mixed aliphatic polyhydric alcohol and an aliphatic polybasic acid or a mixed aliphatic pol |
| 5426170 |
Method for preparing an aromatic polycarbonate |
June 20, 1995 |
| 1. A method for preparing an aromatic polycarbonate having less content of a low molecular weight oligomer which comprises the steps of:(A) conducting an interfacial polymerization reaction in a reaction system comprising at least one aromatic dihydroxy compound, a carbonate precursor, a |
| 5424477 |
Preparation process of .alpha.-aspartyl-L-phenylalanine methyl ester |
June 13, 1995 |
| .alpha.-L-Aspartyl-L-phenylalanine methyl ester (.alpha.-APM) is prepared by catalytic hydrogenation of N-benzyloxycarbonyl-.alpha.-L-aspartyl-L-phenylalanine methyl ester (Z-.alpha.-APM). The catalytic hydrogenation is conducted in an aqueous suspension containing the Z-.alpha.-APM |
| 5410084 |
Aromatic diamine and polyimide, and preparation process of same |
April 25, 1995 |
| A polyimide comprising a requisite structural unit having one or more recurring structural units of the formula: ##STR1## such as the structural units of the formula ##STR2## Further, the present invention relates to a novel aromatic diamine which has a perfluoro radical and |
| 5401796 |
Aliphatic polyester and preparation process thereof |
March 28, 1995 |
| A preparation process of aliphatic polyester having a weight average molecular weight of 15,000 or more by conducting a direct polycondensation reaction of an aliphatic polyhydric alcohol or a mixed aliphatic polyhydric alcohol and an aliphatic polybasic acid or a mixed aliphatic pol |
