Inventor · disambiguated record
Peter D. Phelps
Also filed as: PHELPS PETER D · PHELPS PETER DAVID
46 granted patents·2 pending applications·1,024 citations·filing 1990–2010
98Inventor score
Top patents by PatentIndex Score
48 records- 0197US5142088APreparation of branched polycarbonates and chloroformates, and intermediates thereforGEN ELECTRIC·Filed 1991·Granted Aug 25, 1992·83 cites·25 claims
- 0296US5530083ASilicone-polycarbonate block copolymers and polycarbonate blends having reduced haze, and method for makingGEN ELECTRIC·Filed 1994·Granted Jun 25, 1996·194 cites·6 claims
- 0395US6436548B1Species modification in macrocyclic polyester oligomers, and compositions prepared therebyCYCLICS CORP·Filed 2000·Granted Aug 20, 2002·48 cites·32 claims
- 0494US7732557B2Methods for removing catalyst residue from a depolymerization process streamCYCLICS CORP·Filed 2006·Granted Jun 8, 2010·41 cites·42 claims
- 0593US7186666B2Catalytic systemsCYCLICS CORP·Filed 2005·Granted Mar 6, 2007·11 cites·14 claims
- 0693US6713601B2Species modification in macrocyclic polyester oligomers, and compositions prepared therebyCYCLICS CORP·Filed 2002·Granted Mar 30, 2004·36 cites·18 claims
- 0793US6265521B1Method for preparing polyether polymers of predetermined molecularGEN ELECTRIC·Filed 2000·Granted Jul 24, 2001·50 cites·21 claims
- 0893US6235866B1Slurry preparation of bis (halophthalimides) and of polyether polymersGEN ELECTRIC·Filed 1999·Granted May 22, 2001·75 cites·35 claims
- 0992US7304123B2Processes for shaping macrocyclic oligoestersCYCLICS CORP·Filed 2006·Granted Dec 4, 2007·13 cites·75 claims
- 1092US6630568B1Method for purification of aromatic polyethersGEN ELECTRIC·Filed 2001·Granted Oct 7, 2003·49 cites·79 claims
- 1191US7256241B2Methods for polymerizing macrocyclic polyester oligomers using catalyst promotersCYCLICS CORP·Filed 2006·Granted Aug 14, 2007·11 cites·39 claims
- 1290US7767781B2Preparation of low-acid polyalkylene terephthalate and preparation of macrocyclic polyester oligomer therefromCYCLICS CORP·Filed 2006·Granted Aug 3, 2010·7 cites·38 claims
- 1389US7071291B2Isolation, formulation and shaping of macrocyclic oligoestersCYCLICS CORP·Filed 2002·Granted Jul 4, 2006·23 cites·30 claims
- 1487US6787632B2Organo-titanate catalysts for preparing pure macrocyclic oligoestersCYCLICS CORP·Filed 2001·Granted Sep 7, 2004·31 cites·33 claims
- 1586US6235934B1Aqueous hexasubstituted guanidinium chlorides and methods for their preparation and useGEN ELECTRIC·Filed 1998·Granted May 22, 2001·24 cites·8 claims
- 1685US6790934B2Method for purification of aromatic polyethersGEN ELECTRIC·Filed 2001·Granted Sep 14, 2004·24 cites·112 claims
- 1784US5821322ADiaminoalkyl quaternary ammonium salts and method for their preparation and useGEN ELECTRIC·Filed 1997·Granted Oct 13, 1998·35 cites·20 claims
- 1881US7750109B2Use of a residual oligomer recyclate in the production of macrocyclic polyester oligomerCYCLICS CORP·Filed 2006·Granted Jul 6, 2010·5 cites·39 claims
- 1981US6962968B2Purification of macrocyclic oligoestersCYCLICS CORP·Filed 2003·Granted Nov 8, 2005·17 cites·43 claims
- 2080US6465685B1Method for oxidation of xylene derivativesGEN ELECTRIC·Filed 2000·Granted Oct 15, 2002·13 cites·24 claims
- 2179US6570038B1Aqueous hexasubstituted guanidinium chlorides and methods for their preparation and useFiled 2000·Granted May 27, 2003·12 cites·22 claims
- 2279US5274068ACatalytic, interfacial, pH controlled preparation of polyester polycarbonateGEN ELECTRIC·Filed 1992·Granted Dec 28, 1993·25 cites·7 claims
- 2378US6906147B2Catalytic systemsCYCLICS CORP·Filed 2002·Granted Jun 14, 2005·17 cites·39 claims
- 2478US6392079B1Method and apparatus for preparing monofunctional aromatic chloroformates suitable for use as chainstopping agentsGEN ELECTRIC·Filed 1999·Granted May 21, 2002·15 cites·39 claims
- 2575US7666517B2Isolation, formulation, and shaping of macrocyclic oligoestersCYCLICS CORP·Filed 2006·Granted Feb 23, 2010·2 cites·23 claims
- 2673US5759406AAdsorption process for organic base recovery from aqueous brine solutionsGEN ELECTRIC·Filed 1997·Granted Jun 2, 1998·14 cites·9 claims
- 2769US8283437B2Preparation of low-acid polyalkylene terephthalate and preparation of macrocyclic polyester oligomer therefromPHELPS PETER D·Filed 2010·Granted Oct 9, 2012·1 cites·16 claims
- 2869US5804525AMethod for making polycarbonatesGEN ELECTRIC·Filed 1996·Granted Sep 8, 1998·19 cites·7 claims
- 2966US5015720AMethod for preparing polycarbonates containing aliphatic ester groupsGEN ELECTRIC·Filed 1990·Granted May 14, 1991·14 cites·20 claims
- 3059US6576739B2Method of polycarbonate preparationGEN ELECTRIC·Filed 2000·Granted Jun 10, 2003·2 cites·44 claims
- 3159US5726856AHexasubstituted guanidinium salts and ultracapacitors employing them as electrolytesGEN ELECTRIC·Filed 1996·Granted Mar 10, 1998·25 cites·27 claims
- 3258US5519105AMethod for making polycarbonatesGEN ELECTRIC·Filed 1994·Granted May 21, 1996·9 cites·11 claims
- 3355US5872294AAqueous hexasubstituted guanidinium chlorides and methods for their preparation and useGEN ELECTRIC·Filed 1996·Granted Feb 16, 1999·10 cites·12 claims
- 3455US5300624AMethod for making flame retardant polycarbonateGEN ELECTRIC·Filed 1993·Granted Apr 5, 1994·9 cites·4 claims
- 3554US5652312ARedistribution of organic polyestercarbonate compositionsGEN ELECTRIC·Filed 1995·Granted Jul 29, 1997·12 cites·18 claims
- 3652US5391692AMethod for making aromatic polycarbonatesGEN ELECTRIC·Filed 1994·Granted Feb 21, 1995·8 cites·13 claims
- 3750US5360911AProcess for the preparation of stilbazolium saltsGEN ELECTRIC·Filed 1993·Granted Nov 1, 1994·3 cites·19 claims
- 3849US7615511B2Organo-titanate catalysts for preparing pure macrocyclic oligoestersCYCLICS CORP·Filed 2004·Granted Nov 10, 2009·0 cites·15 claims
- 3949US5094553AOptical waveguides and method for their fabricationGEN ELECTRIC·Filed 1990·Granted Mar 10, 1992·12 cites·5 claims
- 4047US7126022B2Method and apparatus for preparing monofunctional aromatic chloroformates suitable for use as chainstopping agentsGEN ELECTRIC·Filed 2002·Granted Oct 24, 2006·0 cites·38 claims
- 4145US2009137749A1Processes for reducing acid content of a polyalkylene terephthalate and using such in the production of macrocyclic polyester oligomerPHELPS PETER D·Filed 2008·Application pending·0 cites
- 4245US2009137836A1Processes for preparing low-acid polyalkylene terephthalate from diol-capped pre-polymer and linear oligomer recyclate and using such in the production of macrocyclic polyester oligomerPHELPS PETER D·Filed 2008·Application pending·0 cites
- 4343US5136018AMacrocyclic polyarylate compositions of decreased crystallinityGEN ELECTRIC·Filed 1990·Granted Aug 4, 1992·4 cites·14 claims
- 4442US5300623AMethod for making polycarbonate substantially free of diaryl carbonateGEN ELECTRIC·Filed 1993·Granted Apr 5, 1994·4 cites·6 claims
- 4542US5194984AStilbazolium salt and optically non-linear devices incorporating sameGEN ELECTRIC·Filed 1991·Granted Mar 16, 1993·9 cites·6 claims
- 4640US5739257ABinary phase transfer/amine catalyst for making aromatic polycarbonatesGEN ELECTRIC·Filed 1996·Granted Apr 14, 1998·5 cites·9 claims
- 4736US5206334ABranched polycarbonate from 2',4,4"-m-terphenyltriolGEN ELECTRIC·Filed 1992·Granted Apr 27, 1993·1 cites·5 claims
- 4832US6143858APolyestercarbonate comprising residues of branched diacidsGEN ELECTRIC·Filed 1999·Granted Nov 7, 2000·2 cites·20 claims
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