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

Mark R. Hoffman — 8 Patents

HEH&D Electrics: 7 patents #2 of 10Top 20%
Lake Forest, IL: #54 of 431 inventorsTop 15%
Illinois: #11,515 of 84,256 inventorsTop 15%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Mark R. Hoffman has been granted 8 US patents while listed as an inventor at H&D Electrics. The first was granted in 1991 and the most recent in May 2017. Mark R. Hoffman ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Mark R. Hoffman in Lake Forest, IL, US.

Patents per Year

Patents granted per year, 1991 to 2017Bar chart with a peak of 1 patents in 1991.peak 11991: 1 patents19911992: 1 patents19921994: 1 patents19942000: 1 patents20002001: 1 patents20012010: 1 patents20102016: 1 patents20162017: 1 patents2017

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
9658265 High voltage digital voltmeter and wireless phaser James S. Buchanan, William J. McNulty 2017-05-23
9265331 Wearable carrying case 2016-02-23
D622956 Wearable carrying case 2010-09-07
6209148 Floating water massage device Royce Wettstein 2001-04-03
6124714 Lightning and surge arrester test apparatus and method William J. McNulty 2000-09-26
5291124 Tester for high voltage measuring apparatus Niels C. Pedersen 1994-03-01
5130642 Hanging ammeter with removable battery cartridge Niels C. Pedersen 1992-07-14
5017739 Jacket for cable connector Charles Y. Choi, Peder M. Pedersen, Niels C. Pedersen 1991-05-21