Inventor
John L. Hendrixon
Inventor
Shelby, 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 classification38%
H01FMagnets25%
F16JPistons13%
B23PMetal-working not otherwise provided for6%
F15BSystems acting by means of fluids in general6%
F16HGearing6%
G05DSystems for controlling or regulating non-electric variables6%
PatentTitleYear
5,075,584'Electromagnetic solenoid valve with variable force motor'19915,000,421'Electromagnetic solenoid valve with variable force motor'19915,000,420'Electromagnetic solenoid valve with variable force motor'19914,863,142'Electromagnetic solenoid valve with variable force motor'19894,617,968'Electrohydraulic control of a spool valve for energizing a heavy duty automatic transmission clutch'19864,247,972'Method of manufacturing a piston ring'19814,161,321'Piston ring and method of manufacture'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–1989Patents assigned to SEALED POWER CORP (4)· patent assignee history
1979–1991Based in Shelby, MI, US· patent location history
1991Patents assigned to SPX CORP (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEALED POWER CORP | 4 | 1979–1989 |
| SPX CORP | 3 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shelby, MI, US | 7 | 1979–1991 |