Inventor
SPAHNI HEINZ
CH13 patents
⚠️ This page may combine multiple inventors who share the name “SPAHNI HEINZ”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CIBA GEIGY CORP
9 patentsUS5407885AApr 18, 1995
Photochromic naphthacenequinones, process for their preparation and the use thereof
CIBA GEIGY CORP25 citations92
US5208354AMay 4, 1993
Photochromic naphthacenequinones, process for their preparation and the use thereof
CIBA GEIGY CORP21 citations92
US5177227AJan 5, 1993
Photochromic naphthacenequinones, process for their preparation and the use thereof
CIBA GEIGY CORP29 citations92
US5177218AJan 5, 1993
Photochromic benzothioxanthone oxides, process for their preparation and the use thereof
CIBA GEIGY CORP16 citations74
US5300663AApr 5, 1994
Photochromic naphthacenequinones, process for their preparation and the use thereof
CIBA GEIGY CORP5 citations73
US5206395AApr 27, 1993
Photochromic naphthacenequinones, process for their preparation and the use thereof
CIBA GEIGY CORP15 citations73
US5116674AMay 26, 1992
Composite structure
CIBA GEIGY CORP10 citations73
US5641879AJun 24, 1997
Phthalocyanines substituted by phosphorus-containing groups
CIBA GEIGY CORP8 citations72
US5225525AJul 6, 1993
Photochromic benzothioxanthone oxides, process for their preparation and the use thereof
CIBA GEIGY CORP0 citations52
CIBA SC HOLDING AG
4 patentsUS6849315B2Feb 1, 2005
Fast-writable and precision-writable high-capacity optical storage media
CIBA SC HOLDING AG7 citations73
US6245403B1Jun 12, 2001
Writable and erasable high-density optical storage media
CIBA SC HOLDING AG10 citations72
US7034148B2Apr 25, 2006
Metallocenyl phthalocyanines as optical recording media
CIBA SC HOLDING AG7 citations71
US7378221B2May 27, 2008
Metallocenyl phthalocyanines as optical recording media
CIBA SC HOLDING AG0 citations49