William C. Frank

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Roseville, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Silver-carboxylate/1,2-diazine compounds as silver sources in photo...
- Patent number 5,466,804
- Issue date Nov 14, 1995
- Minnesota Mining and Manufacturing
- David R. Whitcomb
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Quaternary-ammonium phenylsulfonylacetate thermal-dye-bleach agents
- Patent number 5,384,237
- Issue date Jan 24, 1995
- Minnesota Mining and Manufacturing Company
- Dian E. Stevenson
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Silver-carboxylate/1,2-diazine compounds as silver sources in photo...
- Patent number 5,350,669
- Issue date Sep 27, 1994
- Minnesota Mining and Manufacturing Company
- David R. Whitcomb
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tetra-alkylammonium phenylsulfonylacetate thermal-dye-bleach agents
- Patent number 5,324,627
- Issue date Jun 28, 1994
- Minnesota Mining and Manufacturing Company
- Dian E. Stevenson
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY