Stephen Richard Hartshorn

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St. Paul, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Functional polymer with a pendant color changing indicator
- Patent number 8,329,851
- Issue date Dec 11, 2012
- 3M Innovative Properties Company
- Yifan Zhang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Functional Polymer With Pendant Color Changing Indicator
- Publication number 20110077358
- Publication date Mar 31, 2011
- Yifan Zhang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...