Inventor
Theodore D. Wakefield, II
Inventor
Vermillion, OH, US
Overview
13→
Patents
1987–2013
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests22%
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons17%
B60LPropulsion of electrically-propelled vehicles17%
Y02TClimate change mitigation technologies related to transportation17%
G05BControl or regulating systems in general6%
G06FElectric digital data processing6%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters6%
A61HPhysical therapy apparatus, e.g. devices for locating or stimulating reflex points in the body3%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%
G01MTesting static or dynamic balance of machines or structures3%
PatentTitleYear
8,489,251'Method and apparatus for reprogramming a programmed controller of a power driven wheelchair'20137,379,793'Method and apparatus for setting speed/response performance parameters of a power driven wheelchair'20087,171,288'Method and apparatus for reprogramming a programmed controller of a power driven wheelchair'20077,148,638'Method and apparatus for embedding motor error parameter data in a drive motor of a power driven wheelchair'20067,003,381'Integral joystick display for a powder driven wheelchair'20066,989,642'Method and apparatus for embedding motor error parameter data in a drive motor of a power driven wheelchair'20066,871,122'Method of adjusting globally performance parameters of a power driven wheelchair'20056,819,981'Method and apparatus for setting speed/response performance parameters of a power driven wheelchair'20046,615,937'Motorized wheelchairs'20036,202,773'Motorized wheelchairs'20015,961,561'Method and apparatus for remote maintenance, troubleshooting, and repair of a motorized wheelchair'19995,094,310'Powered wheelchair having transversely mounted drive mechanism'19924,671,257'Continuous passive motion exercise apparatus'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2013Patents assigned to INVACARE CORP (13)· patent assignee history
1987–2013Based in Vermillion, OH, US· patent location history
1992–2003Based in Vermilion, OH, US· patent location history
2013Patents assigned to WAKEFIELD II THEODORE D (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INVACARE CORP | 13 | 1987–2013 |
| WAKEFIELD II THEODORE Dself | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Vermillion, OH, US | 9 | 1987–2013 |
| Vermilion, OH, US | 4 | 1992–2003 |