Growing community of inventors

Kingwood, TX, United States of America

Harold W Helmke

Average Co-Inventor Count = 4.00

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 = 53

Harold W Helmke ↔ Martin Leo Gorbaty (2 patents)Harold W Helmke ↔ Dane Clark Grenoble (2 patents)Harold W Helmke ↔ Roy T Halle (2 patents)Harold W HelmkeHarold W Helmke (2 patents)Martin Leo GorbatyMartin Leo Gorbaty (52 patents)Dane Clark GrenobleDane Clark Grenoble (11 patents)Roy T HalleRoy T Halle (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Exxon Chemical Patents, Inc. (2 from 1,415 patents)

2. Exxonmobil Chemical Patents Inc. (3,271 patents)


2 patents:

1. 5443715 - Method for upgrading steam cracker tars

2. 5215649 - Method for upgrading steam cracker tars

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as of
12/27/2025
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