Inventor
Steven L. Anyan
Inventor
Missouri City, TX, US
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling71%
Y10TTechnical subjects covered by former us classification17%
F04DNon-positive-displacement pumps8%
F04BPositive-displacement machines for liquids4%
PatentTitleYear
9,464,505'Flow control system with variable staged adjustable triggering device'20169,309,735'System and method for maintaining operability of a downhole actuator'20168,485,798'Pump apparatus, systems and methods'20138,469,106'Downhole displacement based actuator'20138,365,832'Position retention mechanism for maintaining a counter mechanism in an activated position'20138,074,721'Method for controlling a downhole tool with a linearly actuated hydraulic switch'20117,967,075'High angle water flood kickover tool'20117,886,835'High angle water flood kickover tool'20117,775,779'Pump apparatus, systems and methods'20107,128,160'Method and apparatus to selectively reduce wellbore pressure during pumping operations'20067,128,152'Method and apparatus to selectively reduce wellbore pressure during pumping operations'20066,808,020'Debris-free valve apparatus and method of use'20046,732,803'Debris free valve apparatus'20046,575,246'Method and apparatus for gravel packing with a pressure maintenance tool'20036,382,324'One trip seal latch system'20026,343,791'Split mesh end ring'20026,220,353'Full bore set down tool assembly for gravel packing a well'20015,220,962'Pump apparatus for pumping well fluids from a wellbore having low formation pressure'19934,979,569'Dual action valve including at least two pressure responsive members'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2016Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (18)· patent assignee history
1990Based in Sugarland, TX, US· patent location history
1993–2004Based in Sugar Land, TX, US· patent location history
2006–2013Based in Bartlesville, OK, US· patent location history
2011–2016Patents assigned to ANYAN STEVEN L (5)· patent assignee history
2011–2016Based in Missouri City, TX, US· patent location history
2013Patents assigned to SWENSON BRAD (2)· patent assignee history
2013Patents assigned to ARAUZ GRIGORY (1)· patent assignee history
2013Patents assigned to BARNETT ALEXANDER R (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHLUMBERGER TECHNOLOGY CORP | 18 | 1990–2016 |
| ANYAN STEVEN Lself | 5 | 2011–2016 |
| SWENSON BRAD | 2 | 2013 |
| ARAUZ GRIGORY | 1 | 2013 |
| BARNETT ALEXANDER R | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Missouri City, Texas, US | 7 | 2011–2016 |
| Sugar Land, Texas, US | 7 | 1993–2004 |
| Bartlesville, OK, US | 4 | 2006–2013 |
| Sugarland, Texas, US | 1 | 1990 |