P

Inventor

PARKS JR GLENN C

US8 patents
⚠️ This page may combine multiple inventors who share the name “PARKS JR GLENN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CACTUS WELLHEAD LLC

3 patents
US10077844B2Sep 18, 2018

Gate valve and seat insert for a gate valve

CACTUS WELLHEAD LLC8 citations82
US11543035B2Jan 3, 2023

Gate valve gate member for a gate valve

CACTUS WELLHEAD LLC0 citations60
US11125340B2Sep 21, 2021

Gate valve gate member for a gate valve

CACTUS WELLHEAD LLC0 citations60

HYDRIL CO

2 patents
US4444404AApr 24, 1984

Variable bore ram packing element and blowout preventer

HYDRIL CO64 citations94
US4293115AOct 6, 1981

Testing mechanism for blowout preventer ram lock

HYDRIL CO10 citations70

FOSTER OILFIELD EQUIPMENT CO

1 patent
US5090661AFeb 25, 1992

Gate valve

FOSTER OILFIELD EQUIPMENT CO57 citations89

PARKS JR GLENN C

1 patent
US8327866B2Dec 11, 2012

Gate valve seat

PARKS JR GLENN C22 citations87

FOSTER VALVE CORP

1 patent
US5135032AAug 4, 1992

Slurry gate valve

FOSTER VALVE CORP12 citations70