Inventor
David J. Chapman
Inventor
Sterling Heights, MI, US
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E05Fprimary
E05FDevices for moving wings into open or closed position22%
E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof22%
G02BOptical elements, systems or apparatus16%
B60JWindows, windscreens, non-fixed roofs, doors, or similar devices for vehicles8%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
Y10TTechnical subjects covered by former us classification5%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for3%
F16DCouplings for transmitting rotation3%
F16HGearing3%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
PatentTitleYear
9,285,538'Reducing temperature drift of an arrayed waveguide grating'20168,983,244'Optical interferometer'20158,340,523'Tunable optical filter'20128,213,752'Coherent optical mixer and a method of coherent detection of light'20127,861,200'Setup and hold time characterization device and method'20107,077,773'Drive assembly with dynamic tensioning device'20066,697,553'Compact, low insertion loss, high yield arrayed waveguide grating'20046,606,425'Transfer molded packages with embedded thermal insulation'20036,583,388'High thermal efficiency, small form-factor packages including thermally insulative cavities, and transfer molded variants'20036,561,569'Drive mechanism for power operated slideable side door'20036,450,061'Adjustable pedal system with misalignment sensor'20026,405,486'Vehicle liftgate power operating system'20026,390,535'Sliding door closure apparatus'20026,341,809'Liftgate counterbalance system'20026,161,894'Flexible electric cable for sliding vehicle door'20006,018,912'Vehicle liftgate counter balance system'20005,896,703'Power liftgate cable drive'19995,588,258'Power operator for pivotable vehicle closure element'19964,871,309'Apparatus for preparing samples'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Based in Hawthorn East, AU· patent location history
1996–2000Patents assigned to GEN MOTORS CORP (3)· patent assignee history
1996–2006Based in Sterling Heights, MI, US· patent location history
2000–2006Patents assigned to DELPHI TECH INC (7)· patent assignee history
2003–2015Patents assigned to JDS UNIPHASE CORP (5)· patent assignee history
2003–2016Based in San Jose, CA, US· patent location history
2010Based in Mesa, AZ, US· patent location history
2012–2015Patents assigned to CHAPMAN DAVID J (3)· patent assignee history
2012–2015Patents assigned to SHEN JINXI (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DELPHI TECH INC | 7 | 2000–2006 |
| JDS UNIPHASE CORP | 5 | 2003–2015 |
| CHAPMAN DAVID Jself | 3 | 2012–2015 |
| GEN MOTORS CORP | 3 | 1996–2000 |
| SHEN JINXI | 2 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sterling Heights, MI, US | 10 | 1996–2006 |
| San Jose, California, US | 7 | 2003–2016 |
| Mesa, AZ, US | 1 | 2010 |
| Hawthorn East, AU | 1 | 1989 |