Peter Hofmann

Person

Basel, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Asymmetric aryl phosphites
- Patent number 5,401,845
- Issue date Mar 28, 1995
- Ciba-Geigy Corporation
- Rita Pitteloud
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-methylated bis-4-piperidylphosphite
- Patent number 5,340,855
- Issue date Aug 23, 1994
- Ciba-Geigy Corporation
- Hans R. Meier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Asymmetric aryl phosphites
- Patent number 5,322,871
- Issue date Jun 21, 1994
- Ciba-Geigy Corporation
- Rita Pitteloud
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-methylated bis-4-piperidylphosphite
- Patent number 5,239,076
- Issue date Aug 24, 1993
- Ciba-Geigy Corporation
- Hans R. Meier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Compositions stabilized with poly-1,3,2-oxazaphospholidines
- Patent number 5,147,911
- Issue date Sep 15, 1992
- Ciba-Geigy Corporation
- Peter Hofmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Poly-1,3,2-oxazaphospholidine stabilizers
- Patent number 5,075,481
- Issue date Dec 24, 1991
- Ciba-Geigy Corporation
- Peter Hofmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Isocyanuric acid derivatives
- Patent number 4,863,982
- Issue date Sep 5, 1989
- Ciba-Geigy Corporation
- Werner Stegmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Selected 3,9-di(2,2,6,6-tetramethyl-4-piperidyl)-2,4,8,10-tetraoxa-...
- Patent number 4,798,822
- Issue date Jan 17, 1989
- Ciba-Geigy Corporation
- Michael Rasberger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for chemically bonding stabilizers to polymers
- Patent number 4,731,393
- Issue date Mar 15, 1988
- Ciba-Geigy Corporation
- Friedrich Karrer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ortho cyclohexyl, para hydroxy aralkanoic acid esters and amide ant...
- Patent number 4,699,939
- Issue date Oct 13, 1987
- Ciba-Geigy Corporation
- Ivan Orban
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Certain [(2,2,6,6-tetramethyl-4-piperidyl)amino]-1,3,2-dioxaphospho...
- Patent number 4,661,594
- Issue date Apr 28, 1987
- Ciba-Geigy Corporation
- Michael Rasberger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Modified polyurethanes with increased light stability
- Patent number 4,102,870
- Issue date Jul 25, 1978
- Ciba-Geigy Corporation
- Peter Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for flameproofing polyurethanes
- Patent number 4,010,124
- Issue date Mar 1, 1977
- Ciba-Geigy Corporation
- Peter Hofmann
- C07 - ORGANIC CHEMISTRY

Peter Hofmann

Person

Patents Grantslast 30 patents

Asymmetric aryl phosphites

N-methylated bis-4-piperidylphosphite

Asymmetric aryl phosphites

N-methylated bis-4-piperidylphosphite

Compositions stabilized with poly-1,3,2-oxazaphospholidines

Poly-1,3,2-oxazaphospholidine stabilizers

Isocyanuric acid derivatives

Selected 3,9-di(2,2,6,6-tetramethyl-4-piperidyl)-2,4,8,10-tetraoxa-...

Process for chemically bonding stabilizers to polymers

Ortho cyclohexyl, para hydroxy aralkanoic acid esters and amide ant...

Certain [(2,2,6,6-tetramethyl-4-piperidyl)amino]-1,3,2-dioxaphospho...

Modified polyurethanes with increased light stability

Process for flameproofing polyurethanes