Ralph Svenningsen

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Coventry, RI, US

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Patents Grantslast 30 patents

Information Patent Grant
Reactive azo dyes having a permanent quaternary ammonium group and...
- Patent number 5,932,708
- Issue date Aug 3, 1999
- Dystar, L.P.
- Thomas S. Phillips
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Reactive dyes containing a permanent quaternary ammonium group
- Patent number 5,925,745
- Issue date Jul 20, 1999
- Dystar, L.P.
- Thomas S. Phillips
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...