Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Sinclair Cunningham — 18 Patents

MAMannesmann Rexroth Ag: 11 patents #7 of 201Top 4%
BRBosch Rexroth: 4 patents #11 of 242Top 5%
GGG. L. Rexroth Gmbh: 1 patents #10 of 21Top 50%
Kinghorn, GB: #1 of 3 inventorsTop 35%
Overall (All Time): #245,716 of 4,157,543Top 6%
18 Patents All Time
Sinclair Cunningham has been granted 18 US patents while listed as an inventor at Mannesmann Rexroth Ag. The first was granted in 1980 and the most recent in October 2008. Sinclair Cunningham ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Sinclair Cunningham in Kinghorn, GB.

Patents per Year

Patents granted per year, 1980 to 2008Bar chart with a peak of 3 patents in 2002.peak 31980: 1 patents19801982: 1 patents1985: 1 patents19851986: 1 patents1987: 1 patents19871988: 1 patents1989: 1 patents19891990: 1 patents1992: 2 patents19921993: 1 patents2002: 3 patents20022003: 1 patents2004: 1 patents20042005: 1 patents2008: 1 patents2008

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
7431684 Centrifuge comprising hydraulic differential speed determination Peter Forster 2008-10-07
6843162 Radial piston engine Chris Shrive 2005-01-18
6675575 Hydrostatic drive 2004-01-13
6662557 Hydrostatic traveling mechanism Graham Perry 2003-12-16
6494127 Radial piston engine with guide rollers 2002-12-17
6443047 Radial piston engine with roller guides 2002-09-03
6347571 Radial piston motor with friction brake Peter Wuesthof 2002-02-19
5179889 Radial piston engine Peter Wusthof 1993-01-19
5099964 Multiple disc brake Peter Wusthof 1992-03-31
5090295 Radial piston engine Peter Wusthof 1992-02-25
4953524 Radial piston engine Peter Wusthof 1990-09-04
4807519 Piston machine with changeable displacement Peter Wusthof 1989-02-28
4747339 Radial piston machine Peter Wusthof 1988-05-31
4704948 Radial piston machine Peter Wusthof 1987-11-10
4610195 Piston for a hydraulic piston machine of the multiple displacement type Peter Wusthof 1986-09-09
4527460 Radial piston machine Egon Eisenbacher, Peter Wusthof 1985-07-09
4346645 Hydraulic axial piston engine Peter Wusthof 1982-08-31
4200052 Systems for controlling the position of a moored floating vessel Donald Firth, Douglas Jackson 1980-04-29