JW

John H. Walker

PP Phillips Petroleum: 4 patents #360 of 1,401Top 30%
DI Dempster Industries: 1 patents #4 of 7Top 60%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #571,559 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9786152 Septic overflow warning system 2017-10-10
9162221 Heterogeneous liquid phase catalytic process for the dehydration of monoethanolamine to ethylenimine 2015-10-20
5891553 Crosslinkable polymeric coatings and films and composite structures incorporating same James E. Hendrix, Dennis J. Vaughan, James Lee Rakes 1999-04-06
5555853 Lightweight back-pack generator set having a spark-ignited engine operating on middle distillate fuels Douglas M. Bowen, Clint Gray, Douglas E. Campbell, David Collier, Steven L. Hickman +4 more 1996-09-17
5009826 Method of molding a composite drill collar 1991-04-23
4832137 Method for protecting a pipe casing from a drill pipe string 1989-05-23
4708203 Composite drill collar 1987-11-24
4544701 Stamp molded paraffin scraper Harold V. Wood 1985-10-01
4212428 Hydraulic power and control system for granular fertilizer spreaders 1980-07-15