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Sacramento, CA, United States of America

John Payne

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 = 7

John PaynePhilip Tinsley Dempster (1 patent)John PaynePhilip T Dempster (1 patent)John PayneJohn Payne (2 patents)Philip Tinsley DempsterPhilip Tinsley Dempster (13 patents)Philip T DempsterPhilip T Dempster (13 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Life Measurement, Inc. (1 from 5 patents)

2. Life Measurement Instruments (1 from 2 patents)


2 patents:

1. 6520001 - Apparatus and method for the determination of the relative proportions of gases

2. 6202468 - Apparatus and method for the determination of the relative proportions of gases

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as of
12/17/2025
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