Growing community of inventors

Midland, MI, United States of America

David A Spears

Average Co-Inventor Count = 7.00

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 = 3

David A Spears ↔ John Francis Szul (1 patent)David A Spears ↔ Brian Terry Keen (1 patent)David A Spears ↔ Hwaili Soo (1 patent)David A Spears ↔ Joseph C Noronha (1 patent)David A Spears ↔ Dick A Nagaki (1 patent)David A Spears ↔ Elbert J Campbell (1 patent)David A SpearsDavid A Spears (1 patent)John Francis SzulJohn Francis Szul (68 patents)Brian Terry KeenBrian Terry Keen (37 patents)Hwaili SooHwaili Soo (20 patents)Joseph C NoronhaJoseph C Noronha (1 patent)Dick A NagakiDick A Nagaki (1 patent)Elbert J CampbellElbert J Campbell (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dow Technology Investments LLC (1 from 101 patents)


1 patent:

1. 8309771 - Two-stage, gas phase process for the manufacture of alkylene glycol

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as of
12/30/2025
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