Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Alexander M. Mitchell — 4 Patents

ATAT&T: 2 patents #7,295 of 18,772Top 40%
BDBlack & Decker: 1 patents #1,784 of 2,745Top 65%
Joppatowne, MD: #23 of 102 inventorsTop 25%
Maryland: #8,090 of 35,612 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Alexander M. Mitchell has been granted 4 US patents while listed as an inventor at AT&T. The first was granted in 1985 and the most recent in December 1996. Alexander M. Mitchell ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Alexander M. Mitchell in Joppatowne, MD, US.

Patents per Year

Patents granted per year, 1985 to 1996Bar chart with a peak of 2 patents in 1985.peak 21985: 2 patents19851990: 1 patents19901996: 1 patents1996

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5581944 Electrical link and sensor system for automatic sliding doors Henning N. Kornbrekke, Anthony R. Ranaudo, Gary V. Roberts 1996-12-10 $8,061,000
4905540 Fibre reinforced plastic connecting rod Joseph Hughes, Alan J. Wootton, Walter A. Lee 1990-03-06
4536703 Method and apparatus for testing cable wire connected to terminals at a remote location Ali N. Jablway 1985-08-20
4524321 Method and apparatus for testing cable wire connected to terminals at a remote location Ali N. Jablway 1985-06-18