Growing community of inventors

Houston, TX, United States of America

Edwin A Zwald

Average Co-Inventor Count = 5.00

ph-index = 5

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 = 74

Edwin A Zwald ↔ Lev Ring (7 patents)Edwin A Zwald ↔ Robert Lance Cook (7 patents)Edwin A Zwald ↔ Andrei Gregory Filippov (7 patents)Edwin A Zwald ↔ Kevin Karl Waddell (7 patents)Edwin A ZwaldEdwin A Zwald (7 patents)Lev RingLev Ring (155 patents)Robert Lance CookRobert Lance Cook (105 patents)Andrei Gregory FilippovAndrei Gregory Filippov (48 patents)Kevin Karl WaddellKevin Karl Waddell (26 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


7 patents:

1. 7363690 - Method and apparatus for forming a mono-diameter wellbore casing

2. 7363691 - Method and apparatus for forming a mono-diameter wellbore casing

3. 7308755 - Apparatus for forming a mono-diameter wellbore casing

4. 7204007 - Method and apparatus for forming a mono-diameter wellbore casing

5. 7201223 - Method and apparatus for forming a mono-diameter wellbore casing

6. 7172019 - Method and apparatus for forming a mono-diameter wellbore casing

7. 7146702 - Method and apparatus for forming a mono-diameter wellbore casing

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