Inventor · disambiguated record
Petrus W. N. M. Van Leeuwen
Also filed as: VAN LEEUWEN PETRUS W N M · VAN LEEUWEN PETRUS WILHELMUS N · VAN LEEUWEN PETRUS WILHELMUS NICHOLAS MARIA
31 granted patents·1 pending application·289 citations·filing 1978–2004
97Inventor score
Top patents by PatentIndex Score
32 records- 0189US5004844AProcess for the reduction of carbonyl compoundsSHELL OIL CO·Filed 1989·Granted Apr 2, 1991·29 cites·25 claims
- 0289US4474978APreparation of carbamatesSHELL OIL CO·Filed 1983·Granted Oct 2, 1984·50 cites·17 claims
- 0385US4467116AProcess for the hydroformylation of olefinsSHELL OIL CO·Filed 1981·Granted Aug 21, 1984·22 cites·23 claims
- 0476US4855399ACarbon monoxide/olefin co-polymerization process with phosphino substituted sulfonic acid catalystSHELL OIL CO·Filed 1987·Granted Aug 8, 1989·11 cites·12 claims
- 0575US6153800AProcess for the preparation of an aldehydeDSM NV·Filed 1999·Granted Nov 28, 2000·44 cites·18 claims
- 0675US4166076ACyclodimerization of isopreneSHELL OIL CO·Filed 1978·Granted Aug 28, 1979·10 cites·16 claims
- 0767US5817848ABidentate phosphine ligandDSM NV·Filed 1996·Granted Oct 6, 1998·33 cites·51 claims
- 0863US6342605B1Valeraldehyde and process for its preparationCELANESE GMBH·Filed 1999·Granted Jan 29, 2002·7 cites·16 claims
- 0959US4859764ACopolymerization of carbon monoxide and olefin with nitrogen containing phosphine ligand catalystSHELL OIL CO·Filed 1987·Granted Aug 22, 1989·15 cites·9 claims
- 1054US4408078AProcess for the hydroformylation of olefinsSHELL OIL CO·Filed 1982·Granted Oct 4, 1983·11 cites·18 claims
- 1152US4330678AProcess for the hydroformylation of olefinsSHELL OIL CO·Filed 1980·Granted May 18, 1982·10 cites·13 claims
- 1250US5145823APolymerization processSHELL OIL CO·Filed 1991·Granted Sep 8, 1992·6 cites·7 claims
- 1346US4565892AProcess for the preparation of bisphosphine dioxidesSHELL OIL CO·Filed 1983·Granted Jan 21, 1986·2 cites·11 claims
- 1444US5212135APolymerization processSHELL OIL CO·Filed 1992·Granted May 18, 1993·2 cites·8 claims
- 1544US5091507APolymerization of carbon monoxide/olefin with polyalkoxyalkaneSHELL OIL CO·Filed 1990·Granted Feb 25, 1992·5 cites·20 claims
- 1644US4189403ACatalyst for cyclodimerization of isopreneSHELL OIL CO·Filed 1979·Granted Feb 19, 1980·6 cites·18 claims
- 1743US4820802AImproved process of preparing carbon monoxide/olefin copolymer with ortho substituted phosphine catalyst composition.SHELL OIL CO·Filed 1987·Granted Apr 11, 1989·7 cites·7 claims
- 1842US6566521B2Valeraldehyde and process for its preparationCELANESE GMBH·Filed 2001·Granted May 20, 2003·0 cites·19 claims
- 1942US2008033068A1Production of Oxygenated ProductsSASOL TECH PTY LTD·Filed 2004·Application pending·0 cites
- 2041US5066777APolymerization of co/olefin with diphosphine/hydrocarbyl palladium salt complex catalystSHELL OIL CO·Filed 1990·Granted Nov 19, 1991·2 cites·9 claims
- 2140US4940683APolymerization processSHELL OIL CO·Filed 1989·Granted Jul 10, 1990·1 cites·9 claims
- 2236US5137858ACatalyst composition containing monophosphinesSHELL OIL CO·Filed 1991·Granted Aug 11, 1992·2 cites·20 claims
- 2335US5169926APolymerization of carbon monoxide/olefin with hexakis phosphine ligandSHELL OIL CO·Filed 1991·Granted Dec 8, 1992·3 cites·11 claims
- 2435US5010172APolymerization of carbon monoxide/olefin with tertiary monophosphine or secondary monophosphine oxideSHELL OIL CO·Filed 1989·Granted Apr 23, 1991·3 cites·16 claims
- 2535US4843145ACatalytic polymerization of CO/olefin with ortho polar substituted aryl bidentate p ligandSHELL OIL CO·Filed 1987·Granted Jun 27, 1989·2 cites·14 claims
- 2634US8216968B2Coordination complex system comprising building blocksREEK JOOST NICOLAAS HENDRIK·Filed 2004·Granted Jul 10, 2012·0 cites·40 claims
- 2734US5338825APolymer preparationSHELL OIL CO·Filed 1993·Granted Aug 16, 1994·3 cites·11 claims
- 2833US5354340APreparation of copolymersSHELL OIL CO·Filed 1993·Granted Oct 11, 1994·1 cites·13 claims
- 2933US5225386APolymerization of carbon monoxide/olefin with polyalkoxyalkaneSHELL OIL CO·Filed 1991·Granted Jul 6, 1993·1 cites·14 claims
- 3031US4795508ASoldering compositionsSHELL INT RESEARCH·Filed 1987·Granted Jan 3, 1989·1 cites·5 claims
- 3129US5243079AHexakis phosphine catalystSHELL OIL CO·Filed 1992·Granted Sep 7, 1993·0 cites·6 claims
- 3229US5025091APolymerization of CO/olefin with Hydrocarbyl-Pd halide/bidentate P ligand catalyst complexSHELL OIL CO·Filed 1990·Granted Jun 18, 1991·0 cites·12 claims
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