DS

Douglas W. Spencer

BH Baker Hughes Holdings: 4 patents #774 of 3,522Top 25%
QA Quanta Associates: 2 patents #33 of 85Top 40%
📍 Rapid City, MI: #1 of 10 inventorsTop 10%
🗺 Michigan: #11,873 of 86,293 inventorsTop 15%
Overall (All Time): #650,691 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
10444194 Method and apparatus for material identification of pipelines and other tubulars Bruce I. Girrell, Dean M. Vieau, Johana M. Chirinos, Trenton M. Bruce, Jabin D. Reinhold 2019-10-15
10364665 Method and apparatus for stress mapping of pipelines and other tubulars Bruce I. Girrell, Dean M. Vieau, Johana M. Chirinos 2019-07-30
8797033 Stress detection tool using magnetic barkhausen noise Bruce I. Girrell, Thomas A. Johnson, Ameet V. Joshi, Gaurav D. Kulkarni, David J. Henderson 2014-08-05
8261623 Communication system for pipeline inspection Jerry Miller, Randall L. Perrin, James D. Anderson, Jr., Jabin D. Reinhold 2012-09-11
7795864 Apparatus and method of using multi-component measurements for casing evaluation Joseph Gregory Barolak, Jerry Miller, Bruce I. Girrell, Jason Lynch, Chris J. Walter 2010-09-14
7595636 Apparatus and method of using accelerometer measurements for casing evaluation Joseph Gregory Barolak, Jerry Miller, Bruce I. Girrell, Jason Lynch, Chris J. Walter 2009-09-29
7403000 Apparatus and method of determining casing thickness and permeability Joseph Gregory Barolak, Jerry Miller, Bruce I. Girrell, Jason Lynch, Chris J. Walter 2008-07-22
7370703 Downhole hydraulic pipe cutter Freeman L. Hill, Jerry Miller, Chris J. Walter 2008-05-13