Inventor
Stephen M. Sakamoto
Inventor
Oklahoma City, OK, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F04Dprimary
F04DNon-positive-displacement pumps39%
F16CShafts22%
E21BEarth or rock drilling13%
H02KDynamo-electric machines13%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids9%
F16MFrames, casings or beds of engines, machines or apparatus, not specific to engines, machines or apparatus provided for elsewhere4%
PatentTitleYear
10,801,545Load-sharing bearing system and an associated method thereof202010,424,988Downhole electric submersible pumps with high rotordynamic stability margin201910,151,341Load-limiting thrust bearing system and an associated method thereof20187,370,697'Thrust section wear preventor'20087,048,046'High temperature mechanical seal'20066,857,781'Rotor bearing with propeller for increased lubricant flow'20056,837,621'Rotor bearing for increased lubricant flow'20056,461,115'Suction chamber for a horizontal pumping system'20026,450,782'Pump-motor assembly having a motor mount'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2008Patents assigned to WOOD GROUP ESP INC (5)· patent assignee history
2002–2008Based in Oklahoma City, OK, US· patent location history
2018–2020Patents assigned to GEN ELECTRIC (3)· patent assignee history
2018–2020Based in Edmond, OK, US· patent location history
2020Patents assigned to BAKER HUGHES OILFIELD OPERATIONS LLC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WOOD GROUP ESP INC | 5 | 2002–2008 |
| GEN ELECTRIC | 3 | 2018–2020 |
| BAKER HUGHES OILFIELD OPERATIONS LLC | 1 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oklahoma City, OK, US | 6 | 2002–2008 |
| Edmond, OK, US | 3 | 2018–2020 |