Inventor

Douglas C. Campbell

Inventor
Northville, MI, US

Overview

18→
Patents
2001–2020
Patent span
Performing operations
Primary field (CPC B)

Patents· 18 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 for17%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles6%
B60LPropulsion of electrically-propelled vehicles6%
B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general6%
G01RMeasuring electric variables6%
Y02TClimate change mitigation technologies related to transportation6%
F21VFunctional features or details of lighting devices or systems thereof4%
G01CMeasuring distances, levels or bearings4%
G06FElectric digital data processing4%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2005Patents assigned to LEAR CORP (3)· patent assignee history
2001–2020Based in Northville, MI, US· patent location history
2008–2017Patents assigned to JOHNSON CONTROLS TECH CO (9)· patent assignee history
2014–2017Patents assigned to CAMPBELL DOUGLAS C (8)· patent assignee history
2014–2017Patents assigned to PRICE JAMES B (2)· patent assignee history
2014Based in Holland, MI, US· patent location history
2015–2017Patents assigned to GENTEX CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JOHNSON CONTROLS TECH CO92008–2017
CAMPBELL DOUGLAS Cself82014–2017
LEAR CORP32001–2005
GENTEX CORP22015–2017
PRICE JAMES B22014–2017
Locations
LocationPatentsSpan
Northville, MI, US172001–2020
Holland, MI, US12014