Hans Hettel

Person

Cologne, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the production of resilient, flexible polyurethane foams
- Patent number 5,977,198
- Issue date Nov 2, 1999
- Bayer Aktiengesellschaft
- Hans Hettel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of highly elastic polyurethane flexible...
- Patent number 5,158,987
- Issue date Oct 27, 1992
- Bayer Aktiengesellschaft
- Hans Hettel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyurethane foams
- Patent number 5,104,905
- Issue date Apr 14, 1992
- Bayer Aktiengesellschaft
- Peter Haas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyurethane foams
- Patent number 5,104,906
- Issue date Apr 14, 1992
- Bayer Aktiengesellschaft
- Peter Haas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polyurethane foams
- Patent number 5,023,280
- Issue date Jun 11, 1991
- Bayer Aktiengesellschaft
- Peter Haas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyurethane foams
- Patent number 5,017,623
- Issue date May 21, 1991
- Bayer Aktiengesellschaft
- Peter Haas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of heat curable flexible polyurethane mo...
- Patent number 4,981,878
- Issue date Jan 1, 1991
- Bayer Aktiengesellschaft
- Hans-Joachim Kogelnik
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyurethane foams
- Patent number 4,977,194
- Issue date Dec 11, 1990
- Bayer Aktiengesellschaft
- Peter Haas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Stable dispersions of polyureas and/or polyhydrazo-dicarbonamides i...
- Patent number 4,668,734
- Issue date May 26, 1987
- Bayer Aktiengesellschaft
- Manfred Dietrich
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of aromatic polyisocyanates containing...
- Patent number 4,618,706
- Issue date Oct 21, 1986
- Bayer Aktiengesellschaft
- Hans-Joachim Scholl
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of highly elastic foams containing ureth...
- Patent number 4,546,116
- Issue date Oct 8, 1985
- Bayer Aktiengesellschaft
- Hanns P. Muller
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Poly-N,N-hydroxyalkylamides of polybasic carboxylic acids and a pro...
- Patent number 4,493,909
- Issue date Jan 15, 1985
- Bayer Aktiengesellschaft
- Peter Haas
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polyisocyanate mixtures, process for their production and their use...
- Patent number 4,456,709
- Issue date Jun 26, 1984
- Bayer Aktiengesellschaft
- Roland Richter
- C07 - ORGANIC CHEMISTRY

Hans Hettel

Person

Patents Grantslast 30 patents

Process for the production of resilient, flexible polyurethane foams

Process for the preparation of highly elastic polyurethane flexible...

Process for the preparation of polyurethane foams

Process for the preparation of polyurethane foams

Process for the production of polyurethane foams

Process for the preparation of polyurethane foams

Process for the production of heat curable flexible polyurethane mo...

Process for the preparation of polyurethane foams

Stable dispersions of polyureas and/or polyhydrazo-dicarbonamides i...

Process for the preparation of aromatic polyisocyanates containing...

Process for the production of highly elastic foams containing ureth...

Poly-N,N-hydroxyalkylamides of polybasic carboxylic acids and a pro...

Polyisocyanate mixtures, process for their production and their use...