Inventor · disambiguated record
Phillip S. Sizer
Also filed as: SIZER PHILLIP S
17 granted patents·1,063 citations·filing 1975–1999
96Inventor score
Files withOTIS ENG CO15
Top patents by PatentIndex Score
17 records- 0193US4730677AMethod and system for maintenance and servicing of subsea wellsOTIS ENG CO·Filed 1986·Granted Mar 15, 1988·165 cites·28 claims
- 0292US4515220AApparatus and method for rotating coil tubing in a wellOTIS ENG CO·Filed 1983·Granted May 7, 1985·104 cites·39 claims
- 0390US5191173AElectrical cable in reeled tubingOTIS ENG CO·Filed 1991·Granted Mar 2, 1993·104 cites·4 claims
- 0487US4886114AElectric surface controlled subsurface valve systemOTIS ENG CO·Filed 1988·Granted Dec 12, 1989·81 cites·44 claims
- 0583US5275038ADownhole reeled tubing inspection system with fiberoptic cableOTIS ENG CO·Filed 1991·Granted Jan 4, 1994·93 cites·28 claims
- 0683US4583592AWell test apparatus and methodsOTIS ENG CO·Filed 1984·Granted Apr 22, 1986·63 cites·49 claims
- 0783US4251176AWell tubing handling apparatusOTIS ENG CO·Filed 1978·Granted Feb 17, 1981·51 cites·37 claims
- 0882US4723606ASurface controlled subsurface safety valveOTIS ENG CO·Filed 1987·Granted Feb 9, 1988·64 cites·22 claims
- 0980US4449587ASurface controlled subsurface safety valvesOTIS ENG CO·Filed 1983·Granted May 22, 1984·63 cites·17 claims
- 1079US4108257AApparatus for controlling a well during drilling operationsOTIS ENG CO·Filed 1977·Granted Aug 22, 1978·38 cites·26 claims
- 1178US6464004B1Retrievable well monitor/controller systemFiled 1998·Granted Oct 15, 2002·101 cites·22 claims
- 1269US4258794AUnderwater completion habitatOTIS ENG CO·Filed 1979·Granted Mar 31, 1981·34 cites·6 claims
- 1369US3999610APipe snubbing method and apparatusOTIS ENG CO·Filed 1975·Granted Dec 28, 1976·37 cites·22 claims
- 1466US4026363AApparatus and method for performing a desired operation at a specified location in a wellOTIS ENG CO·Filed 1975·Granted May 31, 1977·28 cites·5 claims
- 1543US6648073B1Retrievable sliding sleeve flow control valve for zonal isolation control systemFiled 1999·Granted Nov 18, 2003·21 cites·18 claims
- 1634US5170845ASubsurface safety valves and method and apparatus for their operationOTIS ENG CO·Filed 1991·Granted Dec 15, 1992·11 cites·11 claims
- 1728US5205355ASubsurface safety valves and method and apparatus for their operationOTIS ENG CO·Filed 1992·Granted Apr 27, 1993·5 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →