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Class Information
Number: 528/353
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From carboxylic acid or derivative thereof > With organic amine, or from organic amine salt of a carboxylic acid > From carboxylic acid having three or more carboxylic acid groups or derivatives thereof, and an organic amine, or from an organic amine salt of a tri-or higher carboxylic acid > Carboxylic acid contains at least four carboxylic acid groups or is a derivative of a carboxylic acid containing at least four carboxylic groups
Description: Subject matter wherein at least one reactant is a tetra or higher carboxylic acid or is an acid derivative thereof.

Patents under this class:

Patent Number Title Of Patent Date Issued
8686106 Polyamic acid solution composition having carbon black dispersed therein, process for production of semiconductive polyimide resin belt using the composition, and semiconductive polyimide resi Apr. 1, 2014
8674057 Aromatic polyimides, polyamides and poly(amide-imide) containing diarylaminofluorene-benzothiazole moieties as two-photon active units Mar. 18, 2014
8669038 Polyimide-based polymers, copolymers thereof and positive type photoresist compositions comprising the same Mar. 11, 2014
8623515 Liquid crystal alignment agent, liquid crystal alignment film manufactured using the same, and liquid crystal display device including the liquid crystal alignment film Jan. 7, 2014
8592548 Method to prepare bis(haloimides) Nov. 26, 2013
8592528 Polymer, composition and film Nov. 26, 2013
8580913 Polyimide resin Nov. 12, 2013
8557928 Liquid crystal alignment agent, liquid crystal alignment film manufactured using the same, and liquid crystal display device including the liquid crystal alignment film Oct. 15, 2013
8513373 Process for production of polyimide film having high adhesiveness Aug. 20, 2013
8507634 Polyimide intermediate transfer belt Aug. 13, 2013
8470959 Polyimide compound, preparation method therefor, and optical film and optical waveguide produced by employing the compound Jun. 25, 2013
8426550 Polyamic acid, polyimide, manufacturing method thereof, and polyimide film Apr. 23, 2013
8426533 Process for controlling reaction stoichiometry during polymerization of thermoplastic resins Apr. 23, 2013
8420768 Polymerizable higher diamondoid derivatives Apr. 16, 2013
8415451 Liquid crystal polyimide, liquid crystal resin composition containing same, and resin film for semiconductor elements Apr. 9, 2013
8415024 Process for producing polyimide film, and polyimide film Apr. 9, 2013
8404319 Transparent substrate with low birefringence Mar. 26, 2013
8366969 Phosphate ester polyamideimide mixture containing intermediate transfer members Feb. 5, 2013
8354493 Polyamic acid composition, polyimide endless belt, belt supporting member, fixing member and image formation device Jan. 15, 2013
8349971 6,6-polyimide copolymers and processes for preparing them Jan. 8, 2013
8349537 Photosensitive ink composition for screen printing and method of forming positive relief pattern with use thereof Jan. 8, 2013
RE43880 Solvent free low-melt viscosity imide oligomers and thermosetting polymide composites Dec. 25, 2012
8314204 Endless tubular polyimide film Nov. 20, 2012
8303852 Carbon black-dispersed polyamic acid solution composition, and process for producing semiconductive polyimide resin belt therewith Nov. 6, 2012
8288503 Method for forming organic layer pattern, organic layer pattern prepared by the same and organic memory devices comprising the pattern Oct. 16, 2012
8288484 Cross-linked product of metal-containing polyamic acid, cross-linked product of metal-containing polyimide including the cross-linked product of metal-containing polyamic acid, method of manuf Oct. 16, 2012
8277605 Thermosetting solution composition and prepreg Oct. 2, 2012
8273851 Method for producing polyimide film Sep. 25, 2012
8263308 Polyimide silicone, photosensitive resin composition containing the novel polyimide silicone, and method for pattern formation Sep. 11, 2012
8257901 Polyimide-based polymers, copolymers thereof and positive type photoresist compositions comprising the same Sep. 4, 2012
8232367 Polymer compounds and a preparation method thereof Jul. 31, 2012
8188209 Polyimide resin and curable resin composition May. 29, 2012
8168729 Thermosetting resin composition May. 1, 2012
8158268 Metal-coated polyimide film Apr. 17, 2012
8138236 Solvent-free moisture activated latent curing surgical adhesive or sealant Mar. 20, 2012
8129496 Method for high density data storage and imaging Mar. 6, 2012
8110652 Polyimide resin Feb. 7, 2012
8105752 Photosensitive polyimides Jan. 31, 2012
8097693 Endless tubular polyimide film Jan. 17, 2012
8093349 Terminally modified polybranched polyimide, metal-plated terminally modified polybranched polyimide, and method for producing the same Jan. 10, 2012
8080631 Siloxane-modified hyperbranched polyimide Dec. 20, 2011
8066966 Filmy graphite and process for producing the same Nov. 29, 2011
8062756 Stepwise growth of oligomeric redox-active molecules on a surface without the use of protecting groups Nov. 22, 2011
8034893 Resin resolution composition, polyimide resin, and semiconductor device Oct. 11, 2011
8030437 Methods for forming composite articles from tailorable polyimide resin systems using RTM and RI techniques Oct. 4, 2011
8026338 Method for producing polyimide film Sep. 27, 2011
8013108 Process for producing 2, 3, 3', 4',-biphenyltetracarboxylic dianhydride Sep. 6, 2011
7999060 Tailorable polyimide prepolymer blends, crosslinked polyimides, and articles formed therefrom Aug. 16, 2011
7994274 Two-stage cure polyimide oligomers Aug. 9, 2011
7994273 Photoactive materials Aug. 9, 2011

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