Hermann Perrey

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Krefeld, DT

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Patents Grantslast 30 patents

Information Patent Grant
Dyestuff preparations
- Patent number 4,049,378
- Issue date Sep 20, 1977
- Bayer Aktiengesellschaft
- Hermann Perrey
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Stable heat-sensitive latex mixtures
- Patent number 4,001,162
- Issue date Jan 4, 1977
- Bayer Aktiengesellschaft
- Martin Matner
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of alkyl sulphonic acid hydroxy alkyl am...
- Patent number 3,979,454
- Issue date Sep 7, 1976
- Bayer Aktiengesellschaft
- Hermann Perrey
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Modified chromium oxide pigment
- Patent number 3,960,590
- Issue date Jun 1, 1976
- Bayer Aktiengesellschaft
- Birger Knickel
- C01 - INORGANIC CHEMISTRY