Growing community of inventors

Williamsburg, MI, United States of America

Douglas W Spencer

Average Co-Inventor Count = 5.22

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 = 82

Douglas W SpencerBruce I Girrell (6 patents)Douglas W SpencerJerry Edward Miller (5 patents)Douglas W SpencerChris J Walter (4 patents)Douglas W SpencerJerry E Miller (4 patents)Douglas W SpencerJoseph Gregory Barolak (3 patents)Douglas W SpencerJason A Lynch (3 patents)Douglas W SpencerJason A Lynch (3 patents)Douglas W SpencerDean M Vieau (2 patents)Douglas W SpencerJohana M Chirinos (2 patents)Douglas W SpencerJabin D Reinhold (2 patents)Douglas W SpencerRandall L Perrin (1 patent)Douglas W SpencerFreeman Lee Hill (1 patent)Douglas W SpencerAmeet V Joshi (1 patent)Douglas W SpencerThomas A Johnson (1 patent)Douglas W SpencerDavid J Henderson (1 patent)Douglas W SpencerJames D Anderson (1 patent)Douglas W SpencerGaurav D Kulkarni (1 patent)Douglas W SpencerTrenton M Bruce (1 patent)Douglas W SpencerFreeman L Hill (0 patent)Douglas W SpencerJerry E Miller (0 patent)Douglas W SpencerDouglas W Spencer (8 patents)Bruce I GirrellBruce I Girrell (8 patents)Jerry Edward MillerJerry Edward Miller (11 patents)Chris J WalterChris J Walter (4 patents)Jerry E MillerJerry E Miller (4 patents)Joseph Gregory BarolakJoseph Gregory Barolak (18 patents)Jason A LynchJason A Lynch (3 patents)Jason A LynchJason A Lynch (3 patents)Dean M VieauDean M Vieau (2 patents)Johana M ChirinosJohana M Chirinos (2 patents)Jabin D ReinholdJabin D Reinhold (2 patents)Randall L PerrinRandall L Perrin (26 patents)Freeman Lee HillFreeman Lee Hill (16 patents)Ameet V JoshiAmeet V Joshi (3 patents)Thomas A JohnsonThomas A Johnson (2 patents)David J HendersonDavid J Henderson (1 patent)James D AndersonJames D Anderson (1 patent)Gaurav D KulkarniGaurav D Kulkarni (1 patent)Trenton M BruceTrenton M Bruce (1 patent)Freeman L HillFreeman L Hill (0 patent)Jerry E MillerJerry E Miller (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Baker Hughes Corporation (4 from 5,728 patents)

2. Quanta Associates, L.p. (2 from 104 patents)

3. Microline Technology Corporation (2 from 3 patents)


8 patents:

1. 10444194 - Method and apparatus for material identification of pipelines and other tubulars

2. 10364665 - Method and apparatus for stress mapping of pipelines and other tubulars

3. 8797033 - Stress detection tool using magnetic barkhausen noise

4. 8261623 - Communication system for pipeline inspection

5. 7795864 - Apparatus and method of using multi-component measurements for casing evaluation

6. 7595636 - Apparatus and method of using accelerometer measurements for casing evaluation

7. 7403000 - Apparatus and method of determining casing thickness and permeability

8. 7370703 - Downhole hydraulic pipe cutter

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/7/2025
Loading…