Growing community of inventors

Tulsa, OK, United States of America

Edward F Schaefer

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 = 22

Edward F Schaefer ↔ Donald E Lorenzi (2 patents)Edward F Schaefer ↔ Lawrence R Lozynski (1 patent)Edward F Schaefer ↔ Frederick Clarke (1 patent)Edward F SchaeferEdward F Schaefer (2 patents)Donald E LorenziDonald E Lorenzi (12 patents)Lawrence R LozynskiLawrence R Lozynski (1 patent)Frederick ClarkeFrederick Clarke (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Magnaflux Corporation (2 from 40 patents)


2 patents:

1. 4434427 - Atmosphere control for photographic pipeline inspection

2. 4363545 - Photographic pipeline inspection apparatus including an optical port

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1/2/2026
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