Antonius J. van Hengstum

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GE Deventer, NL

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing 4-aminodiphenylamines
- Patent number RE44175
- Issue date Apr 23, 2013
- Roger Keranen Rains
- 564 - Organic compounds
Information Patent Grant
Solvent-free process for preparing thiuram disulfides
- Patent number 6,465,691
- Issue date Oct 15, 2002
- Flexsys B.V.
- Robertus Hermanus Jozef Bloemenkamp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 4-aminodiphenylamines
- Patent number 6,140,538
- Issue date Oct 31, 2000
- Flexsys America L. P.
- Roger Keranen Rains
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the hydrodesulfurization of light hydrocarbon feeds
- Patent number 5,246,569
- Issue date Sep 21, 1993
- Akzo nv
- Jacobus J. L. Heinerman
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for the preparation of a resulfided catalyst
- Patent number 5,139,990
- Issue date Aug 18, 1992
- Akzo nv
- Jan I. de Jong
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL