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Woburn, MA, United States of America

David Edward Portlock

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 = 1

David Edward PortlockDavid Edward Portlock (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Sharps Associates (1 from 17 patents)

2. Sharp Associates (1 from 1 patent)


2 patents:

1. 4075132 - Method of preparing .beta.-dihydrothebaine

2. 4025521 - Method of preparing .beta.-dihydrothebaine

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as of
12/19/2025
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