Growing community of inventors

Houston, TX, United States of America

John Robert Gradishar

Average Co-Inventor Count = 8.00

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 = 35

John Robert Gradishar ↔ David J Brunnert (1 patent)John Robert Gradishar ↔ Gregory Guy Galloway (1 patent)John Robert Gradishar ↔ Brent James Lirette (1 patent)John Robert Gradishar ↔ James G Martens (1 patent)John Robert Gradishar ↔ John Christopher Jordan (1 patent)John Robert Gradishar ↔ R Lee Colvard (1 patent)John Robert Gradishar ↔ Gregory Gerard Gaspard (1 patent)John Robert GradisharJohn Robert Gradishar (1 patent)David J BrunnertDavid J Brunnert (49 patents)Gregory Guy GallowayGregory Guy Galloway (23 patents)Brent James LiretteBrent James Lirette (20 patents)James G MartensJames G Martens (11 patents)John Christopher JordanJohn Christopher Jordan (6 patents)R Lee ColvardR Lee Colvard (3 patents)Gregory Gerard GaspardGregory Gerard Gaspard (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Shell Oil Comapny (1 from 7,646 patents)

2. Weatherford/lamb, Inc. (1 from 1,209 patents)


1 patent:

1. 7730965 - Retractable joint and cementing shoe for use in completing a wellbore

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1/2/2026
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