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East Boston, MA, United States of America

John M Dolphin

Average Co-Inventor Count = 1.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 0

John M Dolphin ↔ Tom Keenan (1 patent)John M Dolphin ↔ Wilfried Babel (1 patent)John M DolphinJohn M Dolphin (2 patents)Tom KeenanTom Keenan (1 patent)Wilfried BabelWilfried Babel (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Polaroid Corporation (1 from 2,176 patents)

2. Polaroid Corporation, Patent Dept. (1 from 15 patents)


2 patents:

1. 4677206 - 2-hydroxy ethyl benzyl pyridinium compounds

2. 4588672 - Photographic system with quaternary releaser

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12/11/2025
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