David William Crichton Ramsay

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Manchester, EN

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Patents Grantslast 30 patents

Information Patent Grant
Azo dyestuffs
- Patent number 4,091,021
- Issue date May 23, 1978
- Imperial Chemical Industries Limited
- Herbert Francis Andrew
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Transition metal complex formazan dyestuffs containing at least one...
- Patent number 4,079,049
- Issue date Mar 14, 1978
- Imperial Chemical Industries Limited
- David William Crichton Ramsay
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...