Stephen J. Picken

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Arnhem, NL

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Patents Grantslast 30 patents

Information Patent Grant
Temperature matched retardation layer
- Patent number 6,088,077
- Issue date Jul 11, 2000
- Akzo Nobel N.V.
- Paulus Pieter De Wit
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical recording medium comprising a homeotropically oriented liqu...
- Patent number 5,976,638
- Issue date Nov 2, 1999
- Akzo Nobel N.V.
- Stephen J. Picken
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Retardation layer having a dispersion adapted to the active liquid-...
- Patent number 5,760,859
- Issue date Jun 2, 1998
- Akzo Nobel N.V.
- Martin Bosma
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Retardation layer having thin glass substrates
- Patent number 5,576,077
- Issue date Nov 19, 1996
- Akzo Nobel N.V.
- Martin Bosma
- G02 - OPTICS
Information Patent Grant
Twisted nematic film, a method for the preparation thereof, and a d...
- Patent number 5,382,648
- Issue date Jan 17, 1995
- Akzo Nobel N.V.
- Stephen J. Picken
- G02 - OPTICS