Growing community of inventors

Concord, CA, United States of America

Hans R Keller

Average Co-Inventor Count = 1.71

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 = 35

Hans R Keller ↔ Theodore L Parker (1 patent)Hans R Keller ↔ John A Jensvold (1 patent)Hans R Keller ↔ Wendy S Jacks (1 patent)Hans R Keller ↔ Srikanth Ranga Chary (1 patent)Hans R Keller ↔ Damoder Reddy (1 patent)Hans R KellerHans R Keller (2 patents)Theodore L ParkerTheodore L Parker (29 patents)John A JensvoldJohn A Jensvold (28 patents)Wendy S JacksWendy S Jacks (10 patents)Srikanth Ranga CharySrikanth Ranga Chary (3 patents)Damoder ReddyDamoder Reddy (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Dow Chemical Company (2 from 7,680 patents)


2 patents:

1. 5409524 - Membranes having improved selectivity and recovery, and process for

2. 4722128 - Loading tool

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as of
12/30/2025
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