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USPTO Patent Rankings Data through Dec 31, 2025
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Kenneth D. Kramer — 7 Patents

JDJohn Deere: 7 patents #676 of 5,518Top 15%
Waterloo, IA: #39 of 348 inventorsTop 15%
Iowa: #2,264 of 15,303 inventorsTop 15%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Kenneth D. Kramer has been granted 7 US patents while listed as an inventor at John Deere. The first was granted in 1983 and the most recent in March 1992. Kenneth D. Kramer ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Kenneth D. Kramer in Waterloo, IA, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
RE33846 Electrohydraulic valve system Edward H. Fletcher 1992-03-17
4799645 Pilot operated hydraulic control valve Gregory E. Sparks 1989-01-24 $5,945,000
4679765 Low leakage orifice-controlled poppet valve Rohn Lee Olson 1987-07-14 $8,055,000
4506700 Poppet valve with float function 1985-03-26 $1,894,000
4461314 Electrohydraulic valve 1984-07-24 $9,242,000
4437385 Electrohydraulic valve system Edward H. Fletcher 1984-03-20 $6,477,000
4419642 Solenoid with saturable element Kenneth J. Stoss, Gregory E. Sparks 1983-12-06 $3,933,000