Growing community of inventors

Bellingham, MA, United States of America

Karen M O'Brien

Average Co-Inventor Count = 2.00

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 = 28

Karen M O'BrienLee A Carlson (1 patent)Karen M O'BrienKaren M O'Brien (1 patent)Lee A CarlsonLee A Carlson (4 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Dennison Manufacturing Company (1 from 237 patents)


1 patent:

1. 5187888 - Index tabs for hanging file folders having pressure sensitive adhesive

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1/10/2026
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