containing two nitrogen atoms in the ring

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Patents Grantslast 30 patents

Information Patent Grant
Polyurethane topcoat composition
- Patent number 4,134,873
- Issue date Jan 16, 1979
- DeSoto, Inc.
- Francis A. Diaz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane elastomers based on heterocyclic polyester diols
- Patent number 4,091,000
- Issue date May 23, 1978
- Lim-Holding S.A.
- Oskar Schmidt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dicarboxylic compounds having 2,4-quinazolinedione rings and polyes...
- Patent number 3,985,711
- Issue date Oct 12, 1976
- Institut Francais du Petrole, des Carburants et Lubrifiants et Entreprise de...
- Choua Cohen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
3882121
- Patent number 3,882,121
- Issue date May 6, 1975
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE