Inventor · disambiguated record
Chester Stephen Sheppard
Also filed as: MACLEAY RONALD E · SHEPPARD CHESTER S · SHEPPARD CHESTER STEPHEN
31 granted patents·329 citations·filing 1971–1979
97Inventor score
Files withPENNWALT CORP31
Top patents by PatentIndex Score
31 records- 0198US4007165AUnsymmetrical tertiary-aliphatic azoalkanesPENNWALT CORP·Filed 1974·Granted Feb 8, 1977·59 cites·20 claims
- 0295US3956269AAzo free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1974·Granted May 11, 1976·31 cites·5 claims
- 0389US4129531ACrosslinking of polymers with azo-estersPENNWALT CORP·Filed 1977·Granted Dec 12, 1978·48 cites·7 claims
- 0487US3931143AUnsymmetrical aliphatic monoazo compoundsPENNWALT CORP·Filed 1971·Granted Jan 6, 1976·18 cites·13 claims
- 0584US4042773APeroxide free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1976·Granted Aug 16, 1977·15 cites·7 claims
- 0674US4008273ATertiary alkyl semicarbazides and their method of preparationPENNWALT CORP·Filed 1975·Granted Feb 15, 1977·7 cites·4 claims
- 0772US4129586APeroxide free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1977·Granted Dec 12, 1978·15 cites·7 claims
- 0871US4045427AAzo-peroxide free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1976·Granted Aug 30, 1977·13 cites·4 claims
- 0967US4075286APreparation of block polymers using polyazo sequential free radical initiatorsPENNWALT CORP·Filed 1974·Granted Feb 21, 1978·12 cites·4 claims
- 1066US4101522AAzo compounds containing acylating function and azo containing polymersPENNWALT CORP·Filed 1976·Granted Jul 18, 1978·14 cites·10 claims
- 1166US3956366AN-monohalomonosubstituted ureasPENNWALT CORP·Filed 1973·Granted May 11, 1976·8 cites·6 claims
- 1259US4088642ACompounds having both peroxy and aliphatic azo groupsPENNWALT CORP·Filed 1973·Granted May 9, 1978·5 cites·6 claims
- 1359US3957750ASymmetrical bis(unsymmetrical tertiary-alkyl and tertiary-aralkyl azo) compoundsPENNWALT CORP·Filed 1973·Granted May 18, 1976·9 cites·6 claims
- 1458US4045426ABisazo free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1976·Granted Aug 30, 1977·9 cites·4 claims
- 1556US4010152AAliphatic alpha-(hydroperoxy) azo compounds and salts thereofPENNWALT CORP·Filed 1974·Granted Mar 1, 1977·4 cites·9 claims
- 1655US4055714AAzo free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1976·Granted Oct 25, 1977·8 cites·4 claims
- 1754US4025502ASecondary-aliphatic α-substituted azoalkanesPENNWALT CORP·Filed 1974·Granted May 24, 1977·6 cites·12 claims
- 1854US3963673APolymer crosslinking with coupled peroxidesPENNWALT CORP·Filed 1974·Granted Jun 15, 1976·4 cites·11 claims
- 1952US4063012APolymerization of ethylenically unsaturated monomers employing catalyst of aliphatic α-(hydroperoxy)azo compounds and salts thereofPENNWALT CORP·Filed 1976·Granted Dec 13, 1977·7 cites·3 claims
- 2052US4048423AProcess for polymerizing unsaturated monomers and unsaturated polyester resins employing unsymmetrical tertiary-aliphatic azoalkanesPENNWALT CORP·Filed 1976·Granted Sep 13, 1977·7 cites·4 claims
- 2150US4072810ACoupled peroxidesPENNWALT CORP·Filed 1973·Granted Feb 7, 1978·6 cites·4 claims
- 2249US4218370AAzo monomer useful in polymerization systemsPENNWALT CORP·Filed 1979·Granted Aug 19, 1980·6 cites·6 claims
- 2345US3987024ABis- and trisazo sequential free radical initiators used in preparing block and graft copolymersPENNWALT CORP·Filed 1974·Granted Oct 19, 1976·5 cites·8 claims
- 2445US3965145ACoupled peroxidesPENNWALT CORP·Filed 1974·Granted Jun 22, 1976·5 cites·5 claims
- 2540US4069377APolymerization of ethylenically unsaturated monomers employing secondary-aliphatic α-substituted azoalkanesPENNWALT CORP·Filed 1976·Granted Jan 17, 1978·3 cites·8 claims
- 2636US4219476ATertiary aliphatic amidazo compoundPENNWALT CORP·Filed 1976·Granted Aug 26, 1980·0 cites·3 claims
- 2735US4075199ATertiary aliphatic alpha-peroxyazo compoundsPENNWALT CORP·Filed 1973·Granted Feb 21, 1978·2 cites·8 claims
- 2835US3937761ASymmetrical bis(unsymmetrical tertiary-alkyl and tertiary- aralkyl azo) compoundsPENNWALT CORP·Filed 1973·Granted Feb 10, 1976·3 cites·11 claims
- 2932US4001207ATertiary-aliphatic amidazo compoundsPENNWALT CORP·Filed 1971·Granted Jan 4, 1977·0 cites·2 claims
- 3031US4009157APrimary-aliphatic α-hydroxy azoalkanesPENNWALT CORP·Filed 1974·Granted Feb 22, 1977·0 cites·12 claims
- 3130US3962210ATertiary aliphatic alpha-(sulfo)-azo compoundsPENNWALT CORP·Filed 1974·Granted Jun 8, 1976·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →