Inventor · disambiguated record
Pen-Chung Wang
Also filed as: WANG PEN C · WANG PEN-CHUNG
104 granted patents·2 pending applications·696 citations·filing 1981–2017
99Inventor score
Files withSHELL OIL CO85DOW CHEMICAL CO16RESOLUTION PERFORMANCE PRODUCT2HEXION SPECIALTY CHEMICALS INC1
Top patents by PatentIndex Score
106 records- 0194US4360686ASilylation of organic compoundsDOW CHEMICAL CO·Filed 1981·Granted Nov 23, 1982·35 cites·8 claims
- 0291US6956086B2Water dispersible epoxy resinsRESOLUTION PERFORMANCE PRODUCT·Filed 2003·Granted Oct 18, 2005·34 cites·24 claims
- 0391US5095088ACyclic polycarbonate oligomer containing spiro diLactam moietiesSHELL OIL CO·Filed 1990·Granted Mar 10, 1992·53 cites·29 claims
- 0489US6653436B2Water dispersible epoxy resinsRESOLUTION PERFORMANCE PRODUCT·Filed 2000·Granted Nov 25, 2003·30 cites·50 claims
- 0589US4968812ASpirolactonelactamsSHELL OIL CO·Filed 1989·Granted Nov 6, 1990·50 cites·10 claims
- 0678US4847388APolycyclic unsaturated ethers and estersSHELL OIL CO·Filed 1988·Granted Jul 11, 1989·12 cites·24 claims
- 0776US4749760ACurable resin compositionsSHELL OIL CO·Filed 1987·Granted Jun 7, 1988·21 cites·13 claims
- 0874US4459411APreparation of unsaturated heterocyclic carbonyl-containing compoundsDOW CHEMICAL CO·Filed 1982·Granted Jul 10, 1984·8 cites·13 claims
- 0973US6359037B1Polyamine/epoxy-functional amidoamine product with epoxy resinFiled 2000·Granted Mar 19, 2002·10 cites·5 claims
- 1073US6221934B1Aqueous dispersions of epoxy resinsSHELL OIL CO·Filed 1998·Granted Apr 24, 2001·32 cites·66 claims
- 1173US5352251AFuel compositionsSHELL OIL CO·Filed 1993·Granted Oct 4, 1994·18 cites·83 claims
- 1273US5093500ASpirodilactam bisimidesSHELL OIL CO·Filed 1990·Granted Mar 3, 1992·19 cites·8 claims
- 1373US4375548APreparation of trichloromethyl carbinolsDOW CHEMICAL CO·Filed 1981·Granted Mar 1, 1983·8 cites·9 claims
- 1471US4885351ASpirodilactam derivativesSHELL OIL CO·Filed 1989·Granted Dec 5, 1989·8 cites·11 claims
- 1569US6277928B1Epoxy-functional amidoamine reacted with excess polyamine and monoepoxy as epoxy curativeFiled 1998·Granted Aug 21, 2001·21 cites·18 claims
- 1669US4680410APreparation of N- and S-1,2-ethylenically unsaturated organic compoundsDOW CHEMICAL CO·Filed 1984·Granted Jul 14, 1987·6 cites·14 claims
- 1767US6235931B1Partial oxidation of polyoxyalkylene polyol compositions to polycarboxylic acid compositionsSHELL OIL CO·Filed 1998·Granted May 22, 2001·26 cites·61 claims
- 1867US4634787AProcess for preparing (2,2,2-trihalo-1, 1-dihydrocarbyl-ethoxy) trihydrocarbylsilanesDOW CHEMICAL CO·Filed 1985·Granted Jan 6, 1987·9 cites·22 claims
- 1967US4584408APreparation of 1,3-bis(aryloxy)-2-propanolsDOW CHEMICAL CO·Filed 1985·Granted Apr 22, 1986·8 cites·21 claims
- 2066US5458660AFuel compositionsSHELL OIL CO·Filed 1994·Granted Oct 17, 1995·18 cites·37 claims
- 2165US5507843AFuel compositionsSHELL OIL CO·Filed 1994·Granted Apr 16, 1996·18 cites·33 claims
- 2265US5359023ACyclohexanenorbornane epoxy resin with curing agentSHELL OIL CO·Filed 1994·Granted Oct 25, 1994·11 cites·4 claims
- 2363US5837867AFuel compositionsSHELL OIL CO·Filed 1996·Granted Nov 17, 1998·14 cites·7 claims
- 2462US4992526APreparation of polyarylate polymers of hydroxyaryl-substituted 1,6-diaza [4.] spirodilactamsSHELL OIL CO·Filed 1989·Granted Feb 12, 1991·12 cites·40 claims
- 2562US4914176APoly(heterocyclic) polymersSHELL OIL CO·Filed 1989·Granted Apr 3, 1990·11 cites·36 claims
- 2662US4886863ANovel alkenylphenol derivativesSHELL OIL CO·Filed 1989·Granted Dec 12, 1989·5 cites·11 claims
- 2762US4595763AProcess for preparing methyl ethers or thioethers of aryl compoundsDOW CHEMICAL CO·Filed 1983·Granted Jun 17, 1986·6 cites·6 claims
- 2861US5382713APhenolic compoundsSHELL OIL CO·Filed 1993·Granted Jan 17, 1995·5 cites·10 claims
- 2960US6136894AAqueous epoxy resin system with curing agent from reacting acid-terminated polyalkylene glycol with epoxy-amine adductSHELL OIL CO·Filed 1999·Granted Oct 24, 2000·13 cites·12 claims
- 3059US4921931AThermosetting resin compositionsSHELL OIL CO·Filed 1989·Granted May 1, 1990·10 cites·25 claims
- 3158US7358312B2Epoxy resin curing agent of epoxy resin-liquid amine adduct and polyamidoamineHEXION SPECIALTY CHEMICALS INC·Filed 2002·Granted Apr 15, 2008·6 cites·10 claims
- 3258US4672101APolyepoxy aromatic hydantoinsDOW CHEMICAL CO·Filed 1985·Granted Jun 9, 1987·10 cites·20 claims
- 3357US5606006ATrisepoxy resin compositionsSHELL OIL CO·Filed 1996·Granted Feb 25, 1997·6 cites·8 claims
- 3457US4831161AN-(amidoalkyl)hydantoinsDOW CHEMICAL CO·Filed 1987·Granted May 16, 1989·4 cites·2 claims
- 3555US4800231AKeto-diesters productionSHELL OIL CO·Filed 1988·Granted Jan 24, 1989·4 cites·8 claims
- 3654US10221370B2Method of separating lignin derived compounds from pyrolysis oilSHELL OIL CO·Filed 2014·Granted Mar 5, 2019·0 cites·25 claims
- 3754US5030707APolycarbonate polymer having spirodilactam moietiesSHELL OIL CO·Filed 1989·Granted Jul 9, 1991·8 cites·16 claims
- 3854US4889907APolymeric polyhyroxy polyether containing 1,6-diazaspiro-[4.4]nonane-2,7-dione unitsSHELL OIL CO·Filed 1988·Granted Dec 26, 1989·3 cites·29 claims
- 3953US4954584AThermosetting resin compositionsSHELL OIL CO·Filed 1989·Granted Sep 4, 1990·8 cites·19 claims
- 4052US5406003APhenolic compoundsSHELL OIL CO·Filed 1994·Granted Apr 11, 1995·3 cites·5 claims
- 4151US4888408APolymeric polyhydroxy polyether containing 1,6-diazaspiro-[4.4]nonane-2,7-dione unitsSHELL OIL CO·Filed 1988·Granted Dec 19, 1989·7 cites·14 claims
- 4250US6127459AEpoxy resin curing agent-reacting acid-terminated polyalkylene glycol with excess amine-terminated polyamine-epoxy resin adductSHELL OIL CO·Filed 1998·Granted Oct 3, 2000·11 cites·45 claims
- 4350US4939251ANovel spirolactonesSHELL OIL CO·Filed 1988·Granted Jul 3, 1990·7 cites·38 claims
- 4449US8900833B2Method of recovering lipids from microbial biomassSHELL OIL CO·Filed 2012·Granted Dec 2, 2014·0 cites·17 claims
- 4549US4349487AProcess for forming ethersDOW CHEMICAL CO·Filed 1981·Granted Sep 14, 1982·3 cites·10 claims
- 4649US2014373432A1Direct method of producing fatty acid esters from microbial biomassSHELL OIL CO·Filed 2014·Application pending·0 cites
- 4748US5061780APoly(ether-bis-imide-spiro dilactam) polymerSHELL OIL CO·Filed 1990·Granted Oct 29, 1991·6 cites·29 claims
- 4848US4963691ASpirodilactam derivativesSHELL OIL CO·Filed 1989·Granted Oct 16, 1990·2 cites·6 claims
- 4947US5013805ACured resin productsSHELL OIL CO·Filed 1989·Granted May 7, 1991·2 cites·26 claims
- 5047US4906725APolycarbonate containing spiro dilactam segmentSHELL OIL CO·Filed 1988·Granted Mar 6, 1990·6 cites·28 claims
Showing the top 50 of 106 patent records by PatentIndex Score.
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