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USPTO Patent Rankings Data through Dec 31, 2025
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Robert T. Schofield — 9 Patents

FIFiskars: 3 patents #26 of 81Top 35%
AMAmbertag: 2 patents #16 of 67Top 25%
SSS. C. Johnson & Son: 1 patents #961 of 1,588Top 65%
Madison, WI: #548 of 4,527 inventorsTop 15%
Wisconsin: #5,350 of 40,088 inventorsTop 15%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Robert T. Schofield has been granted 9 US patents while listed as an inventor at Ambertag. The first was granted in 1995 and the most recent in May 2016. Robert T. Schofield ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Robert T. Schofield in Madison, WI, US.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9340330 Storage container lids William E. LeBoeuf, Sean Petersen, James C. Boda 2016-05-17
8033529 Ratcheted lift mechanism James C. Boda 2011-10-11
7533869 Ratcheted lift mechanism James C. Boda 2009-05-19
7438279 Tool for pulling nails and other protrusions Eric Eby, Rick Parduhn, James C. Boda 2008-10-21
6345445 Lopping tool and method for lopping 2002-02-12 $6,972,000
6257346 Stand-up weeder Paul Schneider 2001-07-10
5601006 Punch tool with interchangeable die Charles Quinn 1997-02-11
5469625 Compound action hand pruner Craig H. Melter 1995-11-28
5377412 Softouch scissors Craig H. Melter, Douglas J. Birkholz 1995-01-03