State of South Dakota as represented by the Department of Transportation

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Pierre, SD, US

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Patents Grantslast 30 patents

Information Patent Grant
Deicer
- Patent number 5,376,293
- Issue date Dec 27, 1994
- State of South Dakota as represented by the Department of Transportation
- Daniel P. Johnston
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Deicing chemicals and their preparation from polysaccharide sources
- Patent number 4,664,832
- Issue date May 12, 1987
- State of South Dakota as represented by the Department of Transportation
- Robert L. Sandvig
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
De-icing chemicals and their preparation from polysaccharide sources
- Patent number 4,430,240
- Issue date Feb 7, 1984
- State of South Dakota as represented by the Department of Transportation
- Robert L. Sandvig
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...