Inventor

VALKA WILLIAM A

11 patents

⚠️ This page may combine multiple inventors who share the name “VALKA WILLIAM A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FMC CORP

5 patents

US5259459ANov 9, 1993

Subsea wellhead tieback connector

FMC CORP57 citations95

US5299643AApr 5, 1994

Dual radially locked subsea housing

FMC CORP21 citations91

US5069287ADec 3, 1991

Retrievable guide base for subsea well

FMC CORP28 citations91

US5088556AFeb 18, 1992

Subsea well guide base running tool

FMC CORP23 citations90

US4969517ANov 13, 1990

Sub-mudling casing hanger/packoff

FMC CORP15 citations66

ARMCO INC

3 patents

US4438817AMar 27, 1984

Subsea well with retrievable piping deck

ARMCO INC57 citations93

US4300637ANov 17, 1981

Tool for remotely determining the position of a device in an underwater well assembly

ARMCO INC23 citations81

US4300750ANov 17, 1981

Position indicating valves

ARMCO INC19 citations66

VALKA WILLIAM A

1 patent

US5107931AApr 28, 1992

Temporary abandonment cap and tool

VALKA WILLIAM A93 citations92

POLLOCK J ROARK

1 patent

US5105888AApr 21, 1992

Well casing hanger and packoff running and retrieval tool

POLLOCK J ROARK117 citations90

(unassigned)

1 patent

US6386291B1May 14, 2002

Subsea wellhead system and method for drilling shallow water flow formations