Inventor · disambiguated record
Donald R. Kelsey
Also filed as: KELSEY DONALD J · KELSEY DONALD R · KELSEY DONALD ROSS
59 granted patents·4 pending applications·1,128 citations·filing 1976–2008
99Inventor score
Top patents by PatentIndex Score
63 records- 0198US5705575ACopolyester compositionSHELL OIL CO·Filed 1996·Granted Jan 6, 1998·204 cites·12 claims
- 0296US6277947B1Process of producing polytrimethylene terephthalate (PTT)SHELL OIL CO·Filed 2000·Granted Aug 21, 2001·75 cites·19 claims
- 0395US5527973APurification of 1,3-propanediolFiled 1994·Granted Jun 18, 1996·55 cites·18 claims
- 0494US4766197AModified poly(aryl ether ketones) derived from biphenolAMOCO CORP·Filed 1986·Granted Aug 23, 1988·63 cites·6 claims
- 0593US6326456B2Process of producing polytrimethylene terephthalate (PTT)SHELL OIL CO·Filed 2001·Granted Dec 4, 2001·41 cites·6 claims
- 0693US4841009ASubstantially linear monomeric composition and liquid crystal polymeric compositions derived therefromAMOCO CORP·Filed 1985·Granted Jun 20, 1989·39 cites·46 claims
- 0789US4891167ABlock polymers containing a poly(aryl ether ketone) and methods for their productionAMOCO CORP·Filed 1988·Granted Jan 2, 1990·38 cites·11 claims
- 0888US6576774B2Process for recycling polytrimethylene terephthalate cyclic dimerSHELL OIL CO·Filed 2001·Granted Jun 10, 2003·32 cites·11 claims
- 0988US4305829AProcess for flocculating an aqueous suspension of particles with quaternary ammonium graft copolymersUNION CARBIDE CORP·Filed 1980·Granted Dec 15, 1981·23 cites·6 claims
- 1086US5459229ABy product stream purification in the preparation of 1,3-propanediol-based polyestersSHELL OIL CO·Filed 1995·Granted Oct 17, 1995·45 cites·8 claims
- 1184US6657044B1Process for making polytrimethylene terephthalateSHELL OIL CO·Filed 2002·Granted Dec 2, 2003·31 cites·45 claims
- 1284US6245879B1Purification of 1,3-propanediol in carbonyl-containing streamSHELL OIL CO·Filed 1999·Granted Jun 12, 2001·40 cites·17 claims
- 1384US4638044AProcess for preparing poly(aryl ether ketone)sAMOCO CORP·Filed 1985·Granted Jan 20, 1987·29 cites·11 claims
- 1481US4774311APreparation of poly(aryl ether ketones) in the presence of an alkali, alkaline earth of lanthanide metal saltAMOCO CORP·Filed 1986·Granted Sep 27, 1988·25 cites·14 claims
- 1577US5095082APolymerization process employing mixture of Diels-Alder adducts of 4-vinylcyclohexene and cyclopentadieneSHELL OIL CO·Filed 1991·Granted Mar 10, 1992·22 cites·25 claims
- 1676US7381787B2Polytrimethylene terephthalate having a low level of acrolein and a process for producing the sameSHELL OIL CO·Filed 2005·Granted Jun 3, 2008·2 cites·15 claims
- 1775US6093786AProcess for preparing polytrimethylene terephthalateSHELL OIL CO·Filed 1997·Granted Jul 25, 2000·27 cites·20 claims
- 1875US5405924AImido transition metal complex metathesis catalystsSHELL OIL CO·Filed 1994·Granted Apr 11, 1995·21 cites·20 claims
- 1974US6512080B2Process of producing polytrimethylene terephthalate (PTT)SHELL OIL CO·Filed 2001·Granted Jan 28, 2003·12 cites·19 claims
- 2072US4882397AMethod for converting polyketals to polyaryletherketones in the presence of a metal saltAMOCO CORP·Filed 1988·Granted Nov 21, 1989·17 cites·17 claims
- 2172US4080406ARubber-modified impact polystyrenesUNION CARBIDE CORP·Filed 1976·Granted Mar 21, 1978·15 cites·16 claims
- 2269US6509438B2Optimum dipropylene glycol content polytrimethylene terephthalate compositionsSHELL OIL CO·Filed 2001·Granted Jan 21, 2003·8 cites·5 claims
- 2368US5071812APolymerization of cyclic olefinsSHELL OIL CO·Filed 1990·Granted Dec 10, 1991·17 cites·16 claims
- 2467US5312794ACatalyst system for olefin polymerizationSHELL OIL CO·Filed 1992·Granted May 17, 1994·12 cites·9 claims
- 2566US4198528APreparation of di-tertiary peroxidesUNION CARBIDE CORP·Filed 1978·Granted Apr 15, 1980·6 cites·12 claims
- 2665US7196159B2Process for producing polytrimethylene terephthalateSHELL OIL CO·Filed 2005·Granted Mar 27, 2007·1 cites·22 claims
- 2765US5359023ACyclohexanenorbornane epoxy resin with curing agentSHELL OIL CO·Filed 1994·Granted Oct 25, 1994·11 cites·4 claims
- 2865US5142006APolymerization of cyclic olefinsSHELL OIL CO·Filed 1990·Granted Aug 25, 1992·13 cites·13 claims
- 2965US4774344A2,2-bis-phenol dioxolanes monomersAMOCO CORP·Filed 1987·Granted Sep 27, 1988·6 cites·6 claims
- 3063US5278305ACatalysts for ring-opening, metathesis polymerization of cyclic olefinsSHELL OIL CO·Filed 1992·Granted Jan 11, 1994·12 cites·25 claims
- 3162US5459213ACatalyst system for olefin polymerizationSHELL OIL CO·Filed 1994·Granted Oct 17, 1995·10 cites·11 claims
- 3262US4829143AModified poly(aryl ether ketones) derived from biphenolAMOCO CORP·Filed 1987·Granted May 9, 1989·12 cites·4 claims
- 3361US5382713APhenolic compoundsSHELL OIL CO·Filed 1993·Granted Jan 17, 1995·5 cites·10 claims
- 3461US5143992AMethathesis polymerizable adducts of a divinylcyclohydrocarbon and cyclopentadieneSHELL OIL CO·Filed 1991·Granted Sep 1, 1992·11 cites·28 claims
- 3561US4625000AProcess for preparing sulfonated poly(aryl ether) resinsUNION CARBIDE CORP·Filed 1985·Granted Nov 25, 1986·20 cites·67 claims
- 3661US4271053AQuaternary ammonium graft copolymers for use as flocculants and method of preparing sameUNION CARBIDE CORP·Filed 1979·Granted Jun 2, 1981·17 cites·20 claims
- 3758US2008194793A1Polytrimethylene terephthalate having a low level of acrolein and a process for producing the sameKELSEY DONALD ROSS·Filed 2008·Application pending·0 cites
- 3856US6242558B1Modified polytrimethylene terephthalateSHELL OIL CO·Filed 1996·Granted Jun 5, 2001·12 cites·43 claims
- 3955US6800718B1Process for producing polytrimethylene terephthalate (PTT)ZIMMER AG·Filed 2000·Granted Oct 5, 2004·3 cites·19 claims
- 4055US5369195APolymerization of cyclic olefinsSHELL OIL CO·Filed 1992·Granted Nov 29, 1994·15 cites·29 claims
- 4153US7732211B2Method and apparatus for screening of polycondensation catalystsAVANTIUM INT BV·Filed 2001·Granted Jun 8, 2010·2 cites·16 claims
- 4253US5276119ATransition metal hydrides as co-catalysts for olefin polymerizationSHELL OIL CO·Filed 1992·Granted Jan 4, 1994·8 cites·21 claims
- 4352US5406003APhenolic compoundsSHELL OIL CO·Filed 1994·Granted Apr 11, 1995·3 cites·5 claims
- 4451US4774314APreparing poly(aryl ethers) using alkaline earth metal carbonates, organic acid salts, and optionally copper compounds, as catalystsAMOCO CORP·Filed 1987·Granted Sep 27, 1988·7 cites·20 claims
- 4546US5955562ASurface derivatization of polyketones polymersSHELL OIL CO·Filed 1997·Granted Sep 21, 1999·7 cites·13 claims
- 4646US5316994ACopper hydrides as co-catalysts for olefin polymerizationSHELL OIL CO·Filed 1992·Granted May 31, 1994·5 cites·5 claims
- 4746US5284929AEpoxy resins with cyclohexenenorbornene moietiesSHELL OIL CO·Filed 1993·Granted Feb 8, 1994·9 cites·7 claims
- 4846US5093460AMonomers and polyketal polymers from such monomersAMOCO CORP·Filed 1990·Granted Mar 3, 1992·3 cites·4 claims
- 4945US5218065APolymerization processSHELL OIL CO·Filed 1991·Granted Jun 8, 1993·5 cites·34 claims
- 5045US5147950AIn-mold polmerization of cyclic olefins with borohydride cocatalystSHELL OIL CO·Filed 1991·Granted Sep 15, 1992·5 cites·14 claims
Showing the top 50 of 63 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →