Inventor
Edward H. Gervais
Inventor
Yarmouth, ME, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F04Cprimary
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids44%
B23FMaking gears or toothed racks22%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles11%
F01CRotary-piston or oscillating-piston machines or engines11%
F16HGearing11%
PatentTitleYear
6,889,871'Internally generated rotor set for low viscosity and abrasive metering applications'20056,702,703'Lubrication pump for inter-axle differential'20046,617,367'Internally generated rotor set for low viscosity and abrasive metering applications'20034,563,136'High torque low speed hydraulic motor with rotary valving'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to PARKER HANNIFIN CORP (1)· patent assignee history
1986Based in Cumberland Center, ME, US· patent location history
2003–2005Patents assigned to SEALED AIR CORP (2)· patent assignee history
2003–2005Based in Yarmouth, ME, US· patent location history
2004Patents assigned to DANA CORP (1)· patent assignee history
2004Based in Cumberland, ME, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEALED AIR CORP | 2 | 2003–2005 |
| DANA CORP | 1 | 2004 |
| PARKER HANNIFIN CORP | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yarmouth, ME, US | 2 | 2003–2005 |
| Cumberland, ME, US | 1 | 2004 |
| Cumberland Center, ME, US | 1 | 1986 |