Philippe Letzelter

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Iggesund, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method for stabilizing the whiteness of fluorescent whitening agent...
- Patent number 9,493,913
- Issue date Nov 15, 2016
- HOLMEN AB
- Philippe Letzelter
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR STABILIZING THE WHITENESS OF FLUORESCENT WHITENING AGENT...
- Publication number 20090281221
- Publication date Nov 12, 2009
- HOLMEN AB
- Philippe Letzelter
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Security paper/paperboard and a method of producing security paper/...
- Publication number 20030228447
- Publication date Dec 11, 2003
- Philippe Gilbert Letzelter
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE