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Clute, TX, United States of America

John H Spells

Average Co-Inventor Count = 3.00

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 = 13

John H Spells ↔ Richard D Peffley (1 patent)John H Spells ↔ James A Vanderhider (1 patent)John H SpellsJohn H Spells (1 patent)Richard D PeffleyRichard D Peffley (13 patents)James A VanderhiderJames A Vanderhider (6 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

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


1 patent:

1. 4689356 - Polyurethane elastomers prepared in a two-step process using mixtures of

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