Growing community of inventors

Los Altos Hills, CA, United States of America

Catherine C Johnson

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

Catherine C JohnsonTheodore J Wydeven (1 patent)Catherine C JohnsonCatherine C Johnson (1 patent)Theodore J WydevenTheodore J Wydeven (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The United States of America As Represented by the Administrator of the (1 from 2,546 patents)


1 patent:

1. 4199448 - Reverse osmosis membrane of high urea rejection properties

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12/12/2025
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