Inventor
David E. Cain
Inventor
Houston, TX, US
Overview
Patents· 42 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling58%
F16KValves10%
LOCD18%
F16JPistons6%
G01NInvestigating or analysing materials by determining their chemical or physical properties6%
Y10TTechnical subjects covered by former us classification4%
B01DSeparation2%
B30BPresses in general2%
LOC232%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
PatentTitleYear
10,364,635Adjustable isolation sleeve201910,329,852Offshore well drilling system with nested drilling risers201910,196,879Floating structure and riser systems for drilling and production201910,151,167Wellhead system with gasket seal201810,001,216Metal end cap seal20189,574,426'Offshore well system with a subsea pressure control system movable with a remotely operated vehicle'20179,500,046'System for conveying fluid from an offshore well'20169,416,614'Wellhead system with gasket seal'20169,187,973'Offshore well system with a subsea pressure control system movable with a remotely operated vehicle'20159,181,753'Offshore well drilling system with nested drilling risers'20159,133,670'System for conveying fluid from an offshore well'20159,133,677'Wellhead system with gasket seal'20159,097,098'Floating structure and riser systems for drilling and production'20158,960,307'Wellhead system with gasket seal'20158,196,649'Thru diverter wellhead with direct connecting downhole control'20128,157,006'Telescopic fracturing isolation sleeve'20127,992,840'Pressure rated oil field gate valve'20116,923,423'Small bore gate valve'20056,918,574'Reduced torque gate valve with roller screw'20056,520,207'Combination poppet and gate valve'20036,510,895'Energized sealing cartridge for annulus sealing between tubular well components'20036,401,747'Gate valve'2002D0440283'Gate valve'20015,996,695'Method and apparatus for sealing between casing and wellhead connector structure'19995,896,925'Tool protection guide'19995,791,657'Seals containing composite non-extrusion springs'19985,782,297'Retrieval tool for back pressure valve and tree test plug'19985,775,422'Tree test plug'19985,755,287'Sealing assembly for subsea wellheads'19985,730,218'Tool protection guide with energy absorbing bumper'19985,474,124'Wellhead retrieval tool assembly'19955,031,695'Well casing hanger with wide temperature range seal'19914,848,777'Pressure energized/pressure intensified casing seal'1989D0274227'Hydraulic filter press for pressing liquid from a drilling mud or the like'1984D0271570'High temperature, high pressure filter press for testing drilling fluids or similar apparatus'1983D0270718'Field hand pump for use in the measuring of properties of drilling mud, or the like'19834,397,177'Hydraulic filter press'1983D0268820'Pressurized density measuring apparatus'19834,374,474'Pressurized density measuring apparatus'19834,321,829'Density measuring apparatus'1982D0262693'Density measuring balance'19824,299,118'Viscometer'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1984Patents assigned to HALLIBURTON CO (7)· patent assignee history
1982–2019Based in Houston, TX, US· patent location history
1989–2002Patents assigned to FMC CORP (11)· patent assignee history
1989Based in Edinburgh, GB· patent location history
2003–2005Patents assigned to FMC TECHNOLOGIES (4)· patent assignee history
2005–2012Based in New Braunfels, TX, US· patent location history
2011–2012Patents assigned to T 3 PROPERTY HOLDINGS INC (3)· patent assignee history
2015–2019Patents assigned to CAMERON INT CORP (14)· patent assignee history
2015–2019Based in Katy, TX, US· patent location history
2019Based in Hosuton, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CAMERON INT CORP | 14 | 2015–2019 |
| FMC CORP | 11 | 1989–2002 |
| HALLIBURTON CO | 7 | 1982–1984 |
| FMC TECHNOLOGIES | 4 | 2003–2005 |
| T 3 PROPERTY HOLDINGS INC | 3 | 2011–2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 29 | 1982–2019 |
| Katy, Texas, US | 5 | 2015–2019 |
| New Braunfels, Texas, US | 5 | 2005–2012 |
| Hosuton, Texas, US | 1 | 2019 |
| Edinburgh, GB | 1 | 1989 |