Inventor
John M. Bednar
Inventor
Houston, TX, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
6,182,761'Flowline extendable pigging valve assembly'20016,059,039'Extendable semi-clustered subsea development system'20005,010,956'Subsea tree cap well choke system'19914,615,387'Annular gas trap'19864,373,582'Acoustically controlled electro-mechanical circulation sub'19834,367,794'Acoustically actuated downhole blowout preventer'19834,314,365'Acoustic transmitter and method to produce essentially longitudinal, acoustic waves'19824,272,059'Riser tensioner system'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1991Patents assigned to EXXON PRODUCTION RESEARCH CO (6)· patent assignee history
1981–1983Based in Houston, TX, US· patent location history
1986–1991Based in Harvey, LA, US· patent location history
2000–2001Patents assigned to EXXONMOBIL UPSTREAM RES CO (2)· patent assignee history
2000–2001Based in Kingwood, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EXXON PRODUCTION RESEARCH CO | 6 | 1981–1991 |
| EXXONMOBIL UPSTREAM RES CO | 2 | 2000–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 4 | 1981–1983 |
| Kingwood, Texas, US | 2 | 2000–2001 |
| Harvey, LA, US | 2 | 1986–1991 |