Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
WH

William Harpell — 12 Patents

Sparta, NJ: #25 of 375 inventorsTop 7%
New Jersey: #7,365 of 69,400 inventorsTop 15%
Overall (All Time): #396,045 of 4,157,543Top 10%
12 Patents All Time
William Harpell has been granted 12 US patents. The first was granted in 1993 and the most recent in April 2010. William Harpell ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list William Harpell in Sparta, NJ, US.

Patents per Year

Patents granted per year, 1993 to 2010Bar chart with a peak of 2 patents in 1999.peak 21993: 1 patents19931995: 1 patents19951998: 1 patents19981999: 2 patents19992000: 2 patents20002001: 2 patents20012002: 1 patents20022009: 1 patents20092010: 1 patents2010

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
7690627 Tool blade 2010-04-06
D591578 Demolition tool 2009-05-05
6339975 Roofing tool 2002-01-22
6332635 Connection for detachably connecting a tool implement and a tool handle 2001-12-25
6311783 Gardening tool 2001-11-06
6098292 Demolition tool 2000-08-08
6029545 Roofing tool 2000-02-29
5971653 Connector means for allowing radial adjustment of one member relative to another 1999-10-26
5870794 Broom 1999-02-16
5836222 Shingle removing tool 1998-11-17
5429356 Golf putter Craig B. Dingle 1995-07-04
5253869 Golf putter Craig B. Dingle 1993-10-19