Growing community of inventors

Pomona, CA, United States of America

Kathie S Richter

Average Co-Inventor Count = 2.00

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 = 27

Kathie S RichterDavid R Williams (2 patents)Kathie S RichterKathie S Richter (2 patents)David R WilliamsDavid R Williams (25 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (1 from 832,912 patents)

2. Zen Optical Technology, LLC (1 from 1 patent)


2 patents:

1. 7164793 - Pen-based handwritten character recognition and storage system

2. 6968083 - Pen-based handwritten character recognition and storage system

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1/9/2026
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