Inventor
Donald J. West
Inventor
Warren, MI, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification33%
F16HGearing17%
F16KValves17%
G05DSystems for controlling or regulating non-electric variables17%
E02FDredging8%
G09BEducational or demonstration appliances8%
PatentTitleYear
6,315,572'Method and system for computerized authoring, learning, and evaluation'20015,513,832'Variable force solenoid valve'19965,513,673'Electrically modulated pressure regulator valve with variable force solenoid'1996D0319018'Cap for a contact lens vial or the like'19914,783,049'Electrically operated automatic transmission controller assembly'19884,678,006'Electrically operated automatic transmission controller assembly'19874,208,816'Tooth adaptor'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980Patents assigned to CASE CO J I (1)· patent assignee history
1980Based in Thornleigh, AU· patent location history
1987–1996Patents assigned to LECTRON PRODUCTS (4)· patent assignee history
1987–1996Based in Warren, MI, US· patent location history
1991Patents assigned to CIBA GEIGY CORP (1)· patent assignee history
1991Based in Smyrna, GA, US· patent location history
2001Patents assigned to BANCROFT WILLIAM M (1)· patent assignee history
2001Based in Orem, UT, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LECTRON PRODUCTS | 4 | 1987–1996 |
| BANCROFT WILLIAM M | 1 | 2001 |
| CASE CO J I | 1 | 1980 |
| CIBA GEIGY CORP | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Warren, MI, US | 4 | 1987–1996 |
| Orem, UT, US | 1 | 2001 |
| Smyrna, Georgia, US | 1 | 1991 |
| Thornleigh, AU | 1 | 1980 |