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

W. Mark Richter — 4 Patents

MMMax Mobility: 2 patents #2 of 8Top 25%
Santa Cruz, CA: #679 of 1,911 inventorsTop 40%
California: #126,026 of 386,348 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
W. Mark Richter has been granted 4 US patents while listed as an inventor at Max Mobility. The first was granted in 2000 and the most recent in October 2025. W. Mark Richter ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list W. Mark Richter in Santa Cruz, CA, US.

Patents per Year

Patents granted per year, 2000 to 2023Bar chart with a peak of 1 patents in 2000.peak 12000: 1 patents20002021: 1 patents20212023: 1 patents2023

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12447076 Motion-based power assist system for wheelchairs 2025-10-21
11813209 Motion-based power assist system for wheelchairs 2023-11-14
11065166 Motion-based power assist system for wheelchairs 2021-07-20
6120047 Low impact hand rim apparatus for hand-propelled wheelchair Peter W. Axelson 2000-09-19