John M. Dolphin

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East Boston, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
2-hydroxy ethyl benzyl pyridinium compounds
- Patent number 4,677,206
- Issue date Jun 30, 1987
- Polaroid Corporation, Patent Dept.
- John M. Dolphin
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic system with quaternary releaser
- Patent number 4,588,672
- Issue date May 13, 1986
- Polaroid Corporation
- John M. Dolphin
- C07 - ORGANIC CHEMISTRY