Inventor · disambiguated record
Hanspeter Preiswerk
Also filed as: PREISWERK HANSPETER
3 granted patents·40 citations·filing 1992–1995
69Inventor score
Files withCIBA GEIGY CORP3
Top patents by PatentIndex Score
3 records- 0187US5266699ANIR dyes, methods of preparing them and their useCIBA GEIGY CORP·Filed 1992·Granted Nov 30, 1993·31 cites·15 claims
- 0258US5641879APhthalocyanines substituted by phosphorus-containing groupsCIBA GEIGY CORP·Filed 1995·Granted Jun 24, 1997·8 cites·25 claims
- 0330US5391762ANir dyes, methods of preparing them and their useCIBA GEIGY CORP·Filed 1993·Granted Feb 21, 1995·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →