Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Caterpillar › Delwin E. Cobb
DC

Delwin E. Cobb — 22 Patents

Caterpillar: 8 patents #786 of 8,398Top 10%
UCUnion Oil Company Of California: 2 patents #143 of 385Top 40%
Peoria, IL: #49 of 1,769 inventorsTop 3%
Illinois: #3,329 of 84,256 inventorsTop 4%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Delwin E. Cobb has been granted 22 US patents while listed as an inventor at Caterpillar. The first was granted in 1980 and the most recent in December 2022. Delwin E. Cobb ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Delwin E. Cobb in Peoria, IL, US.

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11536126 Downhole gas-liquid separator — 2022-12-27
9045979 Downhole gas separator and method Roy S. Arterbury 2015-06-02
8051907 Downhole separator — 2011-11-08
7909092 Downhole separator — 2011-03-22
7673684 ESP/separator assembly and method — 2010-03-09
7314095 Gardening tool — 2008-01-01
6382317 Apparatus and method for separating gas and solids from well fluids — 2002-05-07
D438905 Combined wire stand and card Myra C. Cobb 2001-03-13
D437000 Card hanger Myra C. Cobb 2001-01-30
5810081 Wear structure for bore hole separation device Roy S. Arterbury 1998-09-22
RE35454 Apparatus and method for separating solid particles from liquids — 1997-02-18
5314018 Apparatus and method for separating solid particles from liquids — 1994-05-24
4820382 Method and apparatus for removing solids from an upwardly moving bed chamber — 1989-04-11 $26,671,000
4746222 Mixing and cooling apparatus for hot, particulate matter Chien-Cheng J. Shih, Charles Griswold 1988-05-24 $18,822,000
4703838 Recoil damper for a reciprocating member Michael A. Roussin 1987-11-03 $39,570,000
RE31164 Cooling system for rock ripper tip Nathan Gutman, Richard E. Livesay 1983-03-01
4355964 Gear pump having fluid deaeration capability Scott A. Rodibaugh 1982-10-26 $2,472,000
RE30769 Mounting arrangement for impact rock-breaker Jerry D. Fidler, Nathan Gutman, Richard E. Livesay, Gerald P. Simmons, Orrin A. Stemler 1981-10-13
4278295 Impacting rock breaker — 1981-07-14 $2,946,000
4231726 Gear pump having fluid deaeration capability Maurice E. Young 1980-11-04
4229044 Clevis-mounted impact ripper Richard E. Livesay 1980-10-21 $10,626,000
4184808 Fluid driven pump — 1980-01-22 $7,662,000

Nearby-Ranked Inventors

David A. Bierdeman22
Ryan M. Stone22
Kai-Uwe Schmidt22
Satoshi Yoneda22
Rene Frigiere22
Wayne Thomas McHugh22
Michael Bachmann22
Kimberly Rae Saviers22
Qinda Ye22