Growing community of inventors

La Canada-Flintridge, CA, United States of America

Hal B H Cooper

Average Co-Inventor Count = 2.00

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 = 52

Hal B H CooperHerbert W Spencer, Iii (3 patents)Hal B H CooperHal B H Cooper (3 patents)Herbert W Spencer, IiiHerbert W Spencer, Iii (19 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Ecc Technologies, Inc. (3 from 8 patents)


3 patents:

1. 6730280 - Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal

2. 6506350 - Method using on site generated ammonia to reduce particulates in combustion gas streams

3. 6322762 - Method using on site generated ammonia to reduce particulates

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as of
1/5/2026
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