Inventor
Henry P. Arendt
Inventor
Dallas, TX, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling73%
H01RElectrically-conductive connections14%
F16JPistons5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
5,058,683'Wet connector'19914,997,384'Wet connector'19914,938,060'Downhole inspection system'19904,921,438'Wet connector'19904,418,756'Method and apparatus for performing operations in well tubing'19834,355,686'Well system and method'19824,344,602'Lock open mechanism for subsurface safety valve'19824,334,581'Balanced area safety valve'19824,204,690'Sealing retaining ring assembly'19804,201,363'Tubing retrievable surface controlled subsurface safety valve'19804,164,977'Well latch'19794,127,167'Lubricator for moving well equipment through flow conductor'19784,119,147'Pumpdown safety valve'19784,078,810'Piston type seal unit for wells'19784,049,052'Subsurface annulus safety valve'19773,935,903'Well tubing protective fluid injection system'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to OTIS ENG CO (15)· patent assignee history
1976–1991Based in Dallas, TX, US· patent location history
1980Patents assigned to EXXON PRODUCTION RESEARCH CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OTIS ENG CO | 15 | 1976–1991 |
| EXXON PRODUCTION RESEARCH CO | 1 | 1980 |
Locations
| Location | Patents | Span |
|---|---|---|
| Dallas, Texas, US | 16 | 1976–1991 |