Inventor
VAN LEEUWEN PETRUS W N M
NL30 patents
⚠️ This page may combine multiple inventors who share the name “VAN LEEUWEN PETRUS W N M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHELL OIL CO
25 patentsUS5004844AApr 2, 1991
Process for the reduction of carbonyl compounds
SHELL OIL CO29 citations92
US4474978AOct 2, 1984
Preparation of carbamates
SHELL OIL CO50 citations92
US4467116AAug 21, 1984
Process for the hydroformylation of olefins
SHELL OIL CO22 citations81
US4859764AAug 22, 1989
Copolymerization of carbon monoxide and olefin with nitrogen containing phosphine ligand catalyst
SHELL OIL CO15 citations74
US4820802AApr 11, 1989
Improved process of preparing carbon monoxide/olefin copolymer with ortho substituted phosphine catalyst composition.
SHELL OIL CO7 citations74
US5145823ASep 8, 1992
Polymerization process
SHELL OIL CO6 citations73
US4408078AOct 4, 1983
Process for the hydroformylation of olefins
SHELL OIL CO11 citations73
US4330678AMay 18, 1982
Process for the hydroformylation of olefins
SHELL OIL CO10 citations73
US4166076AAug 28, 1979
Cyclodimerization of isoprene
SHELL OIL CO10 citations73
US4855399AAug 8, 1989
Carbon monoxide/olefin co-polymerization process with phosphino substituted sulfonic acid catalyst
SHELL OIL CO11 citations72
US4843145AJun 27, 1989
Catalytic polymerization of CO/olefin with ortho polar substituted aryl bidentate p ligand
SHELL OIL CO2 citations63
US5137858AAug 11, 1992
Catalyst composition containing monophosphines
SHELL OIL CO2 citations62
US5091507AFeb 25, 1992
Polymerization of carbon monoxide/olefin with polyalkoxyalkane
SHELL OIL CO5 citations62
US5066777ANov 19, 1991
Polymerization of co/olefin with diphosphine/hydrocarbyl palladium salt complex catalyst
SHELL OIL CO2 citations62
US5010172AApr 23, 1991
Polymerization of carbon monoxide/olefin with tertiary monophosphine or secondary monophosphine oxide
SHELL OIL CO3 citations62
US4189403AFeb 19, 1980
Catalyst for cyclodimerization of isoprene
SHELL OIL CO6 citations62
US4565892AJan 21, 1986
Process for the preparation of bisphosphine dioxides
SHELL OIL CO2 citations61
US5212135AMay 18, 1993
Polymerization process
SHELL OIL CO2 citations60
US5169926ADec 8, 1992
Polymerization of carbon monoxide/olefin with hexakis phosphine ligand
SHELL OIL CO3 citations60
US5338825AAug 16, 1994
Polymer preparation
SHELL OIL CO3 citations54
US5225386AJul 6, 1993
Polymerization of carbon monoxide/olefin with polyalkoxyalkane
SHELL OIL CO1 citations52
US5354340AOct 11, 1994
Preparation of copolymers
SHELL OIL CO1 citations51
US5025091AJun 18, 1991
Polymerization of CO/olefin with Hydrocarbyl-Pd halide/bidentate P ligand catalyst complex
SHELL OIL CO0 citations51
US4940683AJul 10, 1990
Polymerization process
SHELL OIL CO1 citations51
US5243079ASep 7, 1993
Hexakis phosphine catalyst
SHELL OIL CO0 citations50