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USPTO Patent Rankings Data through Dec 31, 2025
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Ralph E. Shirley — 6 Patents

JDJohn Deere: 6 patents #802 of 5,518Top 15%
Waterloo, IA: #51 of 348 inventorsTop 15%
Iowa: #2,650 of 15,303 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Ralph E. Shirley has been granted 6 US patents while listed as an inventor at John Deere. The first was granted in 1983 and the most recent in March 2003. Ralph E. Shirley ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Ralph E. Shirley in Waterloo, IA, US.

Patents per Year

Patents granted per year, 1983 to 2003Bar chart with a peak of 1 patents in 1983.peak 11983: 1 patents19831987: 1 patents19871989: 1 patents19891993: 1 patents19932002: 1 patents20022003: 1 patents2003

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6533528 Support frame for front attached implements of an operating machine and associated locating pins Peter Theodorus Johannes Degen, Mark Fallon 2003-03-18 $10,931,000
6424054 Vehicle steering mode selection control Marlin Onnen, David Allen Larson, Mark Fallon 2002-07-23 $8,420,000
5178039 Modular transmission Volker Huckler, Uli Eckhardt 1993-01-12 $10,615,000
4860614 Transmission differential Alan J. Erdmann 1989-08-29 $21,977,000
4642770 Vehicle accessory control system 1987-02-10 $3,763,000
4396099 Control system for a clutch 1983-08-02 $9,537,000