Growing community of inventors

Spring, TX, United States of America

Mark Crabbe

Average Co-Inventor Count = 3.00

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 = 35

Mark CrabbeDavid L Schulte (2 patents)Mark CrabbeCharles Newton Grichar (2 patents)Mark CrabbeMark Crabbe (2 patents)David L SchulteDavid L Schulte (27 patents)Charles Newton GricharCharles Newton Grichar (24 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Varco I/p, Inc. (1 from 191 patents)

2. Tuboscope I/p, Inc. (1 from 36 patents)


2 patents:

1. 6715611 - Vibratory separator

2. 6412644 - Vibratory separator

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idiyas.com
as of
12/10/2025
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