Steven Michael Partington

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Huddersfield, GB

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Patents Grantslast 30 patents

Information Patent Grant
Grey coloring photochromic fused pyrans
- Patent number 6,387,512
- Issue date May 14, 2002
- James Robinson Limited
- David Allan Clarke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic compounds
- Patent number 6,303,673
- Issue date Oct 16, 2001
- James Robinson Limited
- David A. Clarke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Red coloring hyperchromic 3H-naphtho[2,1-B]pyrans
- Patent number 6,294,112
- Issue date Sep 25, 2001
- James Robinson Limited
- David A. Clarke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Neutral coloring photochromic 2H-naphtho[1,2-b] pyr...
- Patent number 6,248,264
- Issue date Jun 19, 2001
- James Robinson Limited
- David A. Clarke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Azophenyl compounds
- Patent number 5,719,270
- Issue date Feb 17, 1998
- Steven Michael Partington
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...