Growing community of inventors

Hermosa Beach, CA, United States of America

James D Openshaw

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 = 10

James D OpenshawPhilip W Crain (1 patent)James D OpenshawJames D Openshaw (1 patent)Philip W CrainPhilip W Crain (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mattel, Inc. (1 from 1,702 patents)


1 patent:

1. 4669657 - Toy train play setting with detachable storage building

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as of
12/17/2025
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