Growing community of inventors

Fresno, CA, United States of America

Richard D Fields

Average Co-Inventor Count = 3.00

ph-index = 3

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 = 68

Richard D FieldsCharles W Dunmire (3 patents)Richard D FieldsDennis G Whitelaw (3 patents)Richard D FieldsRichard D Fields (3 patents)Charles W DunmireCharles W Dunmire (9 patents)Dennis G WhitelawDennis G Whitelaw (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cmb Industries, Inc. (2 from 8 patents)

2. Spx Corporation (1 from 614 patents)


3 patents:

1. 6659126 - Backflow preventor with adjustable outflow direction

2. 5503176 - Backflow preventor with adjustable cutflow direction

3. 5385166 - Backflow preventor with adjustable outflow direction

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as of
1/11/2026
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