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Class Information
Number: 521/904
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Polyurethane cellular product having high resiliency or cold cure property
Description: Subject matter involving cellular polyurethane products having high resiliency or cold cure property.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6784217 |
Process for making high resilience foams |
Aug. 31, 2004 |
| 6774153 |
Process for preparing a free rise or slabstock flexible polyurethane foam |
Aug. 10, 2004 |
| 6635203 |
Composite polymeric material having high resistance to impact energy |
Oct. 21, 2003 |
| 6617369 |
Process for making visco-elastic foams, polyols blend and reaction system useful therefor |
Sep. 9, 2003 |
| 6593387 |
Process for making high resilience foams |
Jul. 15, 2003 |
| 6417241 |
Process for preparing a flexible polyurethane foam |
Jul. 9, 2002 |
| 6326077 |
Composite polymeric material having high resistance to impact energy |
Dec. 4, 2001 |
| 6080353 |
Method of molding a heat-resistant container |
Jun. 27, 2000 |
| 5721035 |
Foam structure |
Feb. 24, 1998 |
| 5686187 |
Molded polyurethane SRIM articles |
Nov. 11, 1997 |
| 5194325 |
Molded polyurethane foam system utilizing HFC blowing agents |
Mar. 16, 1993 |
| 5070112 |
Process for making flexible polyurethane foam |
Dec. 3, 1991 |
| 5064870 |
Method for the production of highly elastic, cold-curing polyurethane foams |
Nov. 12, 1991 |
| 4945120 |
Process for the production of polyurethane foams using sterically hindered aromatic diamines |
Jul. 31, 1990 |
| 4904706 |
Soft polyurethane foam from hydroxyl urethane prepolymer and polyester ether polyol |
Feb. 27, 1990 |
| 4814360 |
High resiliency molded foam consisting of the reaction product of a polyisocyanate, a polyoxyalkylene polyether polyol, water and a halogenated monohydric alcohol |
Mar. 21, 1989 |
| 4791146 |
Method of preparing dimensionally stable, flexible urethane foam and the foam produced thereby |
Dec. 13, 1988 |
| 4751253 |
Method of preparing dimensionally stable, flexible urethane foam and the foam produced thereby |
Jun. 14, 1988 |
| 4717509 |
Reactive fire-protective formulation for rendering polyurethane rigid foam materials flame-resistant and process for preparing same |
Jan. 5, 1988 |
| 4647596 |
Microcellular polyurethane elastomer and manufacturing method of the same |
Mar. 3, 1987 |
| 4546122 |
Flexible polyurethane foams |
Oct. 8, 1985 |
| 4546116 |
Process for the production of highly elastic foams containing urethane groups and foams obtainable by this process |
Oct. 8, 1985 |
| 4517313 |
Method of making polyurethane foam |
May. 14, 1985 |
| 4500656 |
Process for the preparation of a cellular polyurethane |
Feb. 19, 1985 |
| 4497913 |
Process for preparing a stable dispersion of a polymer in a polyol and its use in the production of high resilience polyurethane foam |
Feb. 5, 1985 |
| 4478957 |
Process for the production of highly resilient, cold-curing polyurethane foams |
Oct. 23, 1984 |
| 4463050 |
Polyurethane catalyst system additive which permits the use of relatively "cold" molds |
Jul. 31, 1984 |
| 4454252 |
Process of sealing and strengthening water-bearing geological formations by means of polyurethane-resin-forming compositions |
Jun. 12, 1984 |
| 4454253 |
Polyurethane foam game ball, composition and process |
Jun. 12, 1984 |
| 4436843 |
High-resilience polyurethane foams having improved resistance to shrinkage |
Mar. 13, 1984 |
| 4384052 |
Polyurethanes produced from an adduct of an organic polyisocyanate and certain amines |
May. 17, 1983 |
| 4383079 |
Extension of polyurethane hydrogel cure time |
May. 10, 1983 |
| 4383050 |
Process for the preparation of low temperature flexible polyurethane elastomers |
May. 10, 1983 |
| 4380591 |
Novel amino catalyst mixture for stabilization of polyurethane foam |
Apr. 19, 1983 |
| 4379757 |
Tertiary amine catalyst mixtures useful in cellular polyurethane formation |
Apr. 12, 1983 |
| 4374934 |
Semi-flexible foam polymer used in packaging |
Feb. 22, 1983 |
| 4350780 |
Polyurethanes made with polymer/polyols prepared via preformed stabilizers |
Sep. 21, 1982 |
| 4338407 |
Stabilization of high resilience polyurethane foam |
Jul. 6, 1982 |
| 4309508 |
Siloxane copolymer mixtures useful as foam stabilizers in high resilience polyurethane foam |
Jan. 5, 1982 |
| 4304872 |
Flexible polyurethane foams having substantial number of cells with internal residual cell surface of 60 to 90 percent |
Dec. 8, 1981 |
| 4304875 |
Polyurethane foaming composition comprising triorganosilylated polypentaerythritol stabilizer |
Dec. 8, 1981 |
| 4302272 |
Process for heat sealing polyurethane foam |
Nov. 24, 1981 |
| 4299923 |
Alkyl-modified siloxane copolymers useful as foam stabilizers in high resilience polyurethane foam |
Nov. 10, 1981 |
| 4284728 |
HR foams made with reactive polyol compositions having improved stability |
Aug. 18, 1981 |
| 4278770 |
Stabilization of high resilience polyurethane foam by including in the reaction mixture a polyol containing an effectively dispersed finely divided solid particulate material |
Jul. 14, 1981 |
| 4276385 |
Process for preparing cold-cured molded polyurethane flexible from a high molecular weight siloxane and a solvent |
Jun. 30, 1981 |
| 4273881 |
Organo-phosphorus flame-retardant for polyurethane foams prepared from graft polyoxyalkylene polyether polyols |
Jun. 16, 1981 |
| 4254069 |
Heat stable reaction injection molded elastomers |
Mar. 3, 1981 |
| 4239856 |
Method for preparing high-resilient flexible urethane foams |
Dec. 16, 1980 |
| 4214055 |
High resilience flame-retardant polyurethane foams based on polymer/polyol compositions |
Jul. 22, 1980 |
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