Inventor
Ronald J. Fredricks
Inventor
Grand Rapids, MI, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B60Rprimary
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
B60TVehicle brake control systems or parts thereof14%
B64CAeroplanes7%
F01CRotary-piston or oscillating-piston machines or engines7%
F02BInternal-combustion piston engines7%
G01CMeasuring distances, levels or bearings7%
Y02TClimate change mitigation technologies related to transportation7%
PatentTitleYear
10,145,243Planetary rotary engine with rotary ring valves20187,938,494'Antilock braking systems and methods'20116,890,041'Antilock brake systems employing a sliding mode observer based estimation of differential wheel torque'20056,501,536'Method and apparatus for determining the location of an occupant of a vehicle'20026,176,587'Method and apparatus for adjusting vehicle mirrors'20015,993,015'Method and apparatus for determining the location of an occupant of a vehicle'19995,668,675'Opto-electronic aid for alignment of exterior vehicle mirrors to minimize blind spot effects'19974,456,376'Optical rate sensor'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984Patents assigned to LEAR SIEGLER INC (1)· patent assignee history
1984–2011Based in Grand Rapids, MI, US· patent location history
2011Patents assigned to FREDRICKS RONALD J (1)· patent assignee history
2011Patents assigned to RIBBENS WILLIAM B (1)· patent assignee history
2018Patents assigned to PLANETARY ROTOR ENGINE COMPANY (1)· patent assignee history
2018Based in Jenison, MI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FREDRICKS RONALD Jself | 1 | 2011 |
| LEAR SIEGLER INC | 1 | 1984 |
| PLANETARY ROTOR ENGINE COMPANY | 1 | 2018 |
| RIBBENS WILLIAM B | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Grand Rapids, MI, US | 7 | 1984–2011 |
| Jenison, MI, US | 1 | 2018 |