Sylvia A. Farnum

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Lakeland, MN, US

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Patents Grantslast 30 patents

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
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
Information Patent Grant
Thermal-dye-bleach construction comprising a polymethine dye and a...
- Patent number 5,314,795
- Issue date May 24, 1994
- Minnesota Mining and Manufacturing Company
- Randall H. Helland
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY