Growing community of inventors

West Chester, PA, United States of America

Ann Marion Brearley

Average Co-Inventor Count = 2.40

ph-index = 2

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 = 45

Ann Marion BrearleyErnest Keith Marchildon (1 patent)Ann Marion BrearleyHarvey S Gold (1 patent)Ann Marion BrearleyJames Joseph Lang (1 patent)Ann Marion BrearleyAnn Marion Brearley (2 patents)Ernest Keith MarchildonErnest Keith Marchildon (9 patents)Harvey S GoldHarvey S Gold (2 patents)James Joseph LangJames Joseph Lang (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. E.i. Dupont De Nemours and Company (2 from 16,338 patents)


2 patents:

1. 5674974 - Continuous polymerization process for polyamides

2. 5532487 - Near-infrared measurement and control of polyamide processes

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1/7/2026
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