Inventor · disambiguated record
Johannes J. Keijsper
Also filed as: KEIJSPER JOHANNES J · KEIJSPER JOHANNES JACOBUS
21 granted patents·110 citations·filing 1989–1997
94Inventor score
Files withSHELL OIL CO20
Top patents by PatentIndex Score
21 records- 0167US5216120APolymerization of co/olefin with catalyst comprising palladium compound, lewis acid and bronsted acidSHELL OIL CO·Filed 1992·Granted Jun 1, 1993·15 cites·22 claims
- 0266US5275799AProcess for preparing a crystalline zeoliteSHELL OIL CO·Filed 1992·Granted Jan 4, 1994·22 cites·10 claims
- 0364US5340787APolymerization processSHELL OIL CO·Filed 1993·Granted Aug 23, 1994·13 cites·9 claims
- 0462US5227464AGas phase polymerization of co/olefin with particular catalyst supportSHELL OIL CO·Filed 1992·Granted Jul 13, 1993·11 cites·25 claims
- 0553US5225523APolyketone polymer preparation with tetra alkyl bis phosphine ligand and hydrogenSHELL OIL CO·Filed 1992·Granted Jul 6, 1993·8 cites·17 claims
- 0651US5245123AVapor phase polymerization of co/olefin with palladium compound, lewis acid and bidentate ligandSHELL OIL CO·Filed 1992·Granted Sep 14, 1993·6 cites·17 claims
- 0751US5237047APolymerization of co/olefin wth catalyst chemically bound to particles of supportSHELL OIL CO·Filed 1992·Granted Aug 17, 1993·7 cites·4 claims
- 0844US5212135APolymerization processSHELL OIL CO·Filed 1992·Granted May 18, 1993·2 cites·8 claims
- 0940US5243026AContinuous gas phase polymerization of co/olefin with palladium and metal fluoride lewis acid catalystSHELL OIL CO·Filed 1992·Granted Sep 7, 1993·4 cites·13 claims
- 1040US5147840ACatalyst compositionsSHELL OIL CO·Filed 1991·Granted Sep 15, 1992·5 cites·17 claims
- 1137US6307095B1Process for the preparation of vinylestersFiled 1997·Granted Oct 23, 2001·1 cites·16 claims
- 1236US5210178AGas phase polyketone polymer preparation with preliminary addition of waterSHELL OIL CO·Filed 1992·Granted May 11, 1993·2 cites·20 claims
- 1335US5169926APolymerization of carbon monoxide/olefin with hexakis phosphine ligandSHELL OIL CO·Filed 1991·Granted Dec 8, 1992·3 cites·11 claims
- 1434US5420236AProcess for the preparation of copolymersSHELL OIL CO·Filed 1994·Granted May 30, 1995·2 cites·22 claims
- 1534US5369075APolymerization processSHELL OIL CO·Filed 1993·Granted Nov 29, 1994·1 cites·10 claims
- 1634US5229343APolymerization processSHELL OIL CO·Filed 1992·Granted Jul 20, 1993·1 cites·11 claims
- 1732US5218085APreparation of high molecular weight carbon monoxide/styrene copolymersSHELL OIL CO·Filed 1991·Granted Jun 8, 1993·2 cites·15 claims
- 1832US5008094ACrystalline (metallo)silicates and process for preparing such (metallo)silicatesSHELL OIL CO·Filed 1989·Granted Apr 16, 1991·2 cites·12 claims
- 1931US5171832APolymerization of carbon monoxide/olefin with p bidentate ligand having (1) alkoxy phenyl p group and (2) monosubstituted divalent bridging groupSHELL OIL CO·Filed 1991·Granted Dec 15, 1992·3 cites·13 claims
- 2030US5436214APolymerization processSHELL OIL CO·Filed 1993·Granted Jul 25, 1995·0 cites·11 claims
- 2129US5243079AHexakis phosphine catalystSHELL OIL CO·Filed 1992·Granted Sep 7, 1993·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →