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USPTO Patent Rankings Data through Dec 31, 2025
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Irwin D. McIlwain — 19 Patents

SPSperry: 6 patents #45 of 841Top 6%
NANew Holland North America: 5 patents #36 of 281Top 15%
Ford: 4 patents #4,046 of 17,473Top 25%
CACnh America: 3 patents #177 of 777Top 25%
SRSperry Rand: 1 patents #22 of 84Top 30%
Lancaster, PA: #34 of 963 inventorsTop 4%
Pennsylvania: #3,661 of 74,527 inventorsTop 5%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
Irwin D. McIlwain has been granted 19 US patents while listed as an inventor at Sperry. The first was granted in 1980 and the most recent in September 2012. Irwin D. McIlwain ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Irwin D. McIlwain in Lancaster, PA, US.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8266881 Flexible motor support system for a crop gathering device having a harvesting header 2012-09-18 $40,056,000
8051634 Replaceable guide assembly tines for an agricultural harvester Derek S. Rude, Robert Cropper, Leslie G. Hill 2011-11-08 $11,954,000
7975460 Stabilization system for a crop harvesting header 2011-07-12 $11,582,000
6481520 Skid steer loader forearm rest Clayton E. Banks, Jr. 2002-11-19
6406097 Pivoting forearm rests for a skid steer loader Clayton E. Banks, Jr. 2002-06-18
5896782 Throttle control for baler engine 1999-04-27
5819643 Baler density control system Preston L. Ellis 1998-10-13
5520500 Method and apparatus for tilting a skid steer loader cab Robert R. Todd, Edward H. Priepke 1996-05-28
5347801 Round baler belt idler roller mounting apparatus 1994-09-20 $29,338,000
5327823 Splice for round baler belts James T. Clevenger, Jr. 1994-07-12 $9,771,000
D312718 Conveyor belt 1990-12-04
4844675 Bale accumulator with automatic control Richard P. Strosser, Pierino Piccinato, Carl E. Bohman 1989-07-04
4407110 Frame for crop harvesting header Lawrence M. Halls 1983-10-04 $5,587,000
4385483 Transporting a crop harvesting header 1983-05-31 $1,964,000
4384445 Mechanism for releasably clamping a wheel assembly to a header cutterbar 1983-05-24 $3,317,000
4372103 Combine drive belt shielding James W. McDuffie 1983-02-08 $1,630,000
4324092 Cutterbar wear strip Lawrence M. Halls 1982-04-13 $2,221,000
4296592 Auger floatation limit 1981-10-27 $1,126,000
4187666 Baler pickup counter balancing means 1980-02-12 $1,222,000