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USPTO Patent Rankings Data through Dec 31, 2025
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Dennis J. Strock — 15 Patents

AMAmoco: 13 patents #38 of 1,251Top 4%
S(Standard Oil Company (Indiana): 1 patents #254 of 576Top 45%
Woodridge, IL: #32 of 450 inventorsTop 8%
Illinois: #5,664 of 84,256 inventorsTop 7%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Dennis J. Strock has been granted 15 US patents while listed as an inventor at Amoco. The first was granted in 1984 and the most recent in July 1994. Dennis J. Strock ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Dennis J. Strock in Woodridge, IL, US.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5327943 Multi-purpose nozzle with liquid pickup Harry B. Hartman 1994-07-12 $33,291,000
5325896 Stage II vapor recovery system Wolfgang Koch, Michael S. Butkovich, Harry B. Hartman 1994-07-05 $43,975,000
5289856 Multi-purpose nozzle with liquid pickup Harry B. Hartman 1994-03-01 $125,154,000
D342742 Fuel dispenser handle Charles M. Daul, Philip Jones, Wolfgang Koch 1993-12-28
5273087 Vapor recovery nozzle with flow indicators Wolfgang Koch, Harry B. Hartman, Michael S. Butkovich, Terrance L. Lambert, Charles M. Daul +1 more 1993-12-28 $25,380,000
D341595 Fuel dispenser handle Harry B. Hartman, Terrance L. Lambert, Wolfgang Koch 1993-11-23
5244017 Fuel and vapor flow signaling process Harry B. Hartman, Wolfgang Koch, Terrance L. Lambert 1993-09-14 $35,370,000
D338210 Fuel dispenser handle Terrance L. Lambert, Michael S. Butkovich, Wolfgang Koch 1993-08-10
5234036 Dispensing fuel with aspiration of condensed vapors Michael S. Butkovich 1993-08-10 $17,870,000
D338209 Fuel dispenser handle Michael S. Butkovich, Wolfgang Koch 1993-08-10
5213142 Stage II vapor recovery system Wolfgang Koch, Michael S. Butkovich, Harry B. Hartman 1993-05-25 $32,481,000
5199471 Process to prevent vapor blockage for stage II vapor recovery Harry B. Hartman, Michael S. Butkovich, Wolfgang Koch 1993-04-06 $48,451,000
4763805 Underground tank assembly with internal bladder 1988-08-16 $22,705,000
4648523 Underground tank assembly with internal bladder 1987-03-10 $26,910,000
4471806 Fuel delivery system having thermal contraction compensation 1984-09-18