Growing community of inventors

Glendora, CA, United States of America

William J Ullrich

Average Co-Inventor Count = 3.00

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 = 17

William J Ullrich ↔ Frederic F Grant (1 patent)William J Ullrich ↔ Ionel Mondocea (1 patent)William J UllrichWilliam J Ullrich (1 patent)Frederic F GrantFrederic F Grant (37 patents)Ionel MondoceaIonel Mondocea (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Eastman-Kodak Company (1 from 21,598 patents)


1 patent:

1. 5021901 - Ferris wheel magnetic tape cassette storage and handling apparatus

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1/20/2026
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