Inventor
CALVIN DOUGLAS G
US15 patents
⚠️ This page may combine multiple inventors who share the name “CALVIN DOUGLAS G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TEXACO INC
8 patentsUS4137968AFeb 6, 1979
Ignition system for an automatic burner for in situ combustion for enhanced thermal recovery of hydrocarbons from a well
TEXACO INC20 citations81
US4136737AJan 30, 1979
Method for automatically initiating in situ combustion for enhanced thermal recovery of hydrocarbons from a well
TEXACO INC16 citations81
US4079784AMar 21, 1978
Method for in situ combustion for enhanced thermal recovery of hydrocarbons from a well and ignition system therefor
TEXACO INC18 citations81
US4269211AMay 26, 1981
Steam manifold distribution system for providing equal quality of steam in two lines
TEXACO INC16 citations73
US3981189ASep 21, 1976
Methods and steam samplers with inertial latch
TEXACO INC15 citations73
US3934469AJan 27, 1976
Method and steam samplers
TEXACO INC9 citations73
US4205725AJun 3, 1980
Method for forming an automatic burner for in situ combustion for enhanced thermal recovery of hydrocarbons from a well
TEXACO INC11 citations72
US4088187AMay 9, 1978
Well steam sampler apparatus and method of forming and using a well steam sampler
TEXACO INC3 citations62
KEYSTONE INT
5 patentsUS5244183ASep 14, 1993
Fugitive emission sealing assembly
KEYSTONE INT55 citations92
US4773625ASep 27, 1988
Corrosion-resistant overlay for the edge of butterfly valves
KEYSTONE INT22 citations81
US5765815AJun 16, 1998
Rotary valve with pressurized energized seal
KEYSTONE INT13 citations73
US4899775AFeb 13, 1990
Corrosion-resistant overlay for the edge of butterfly valves
KEYSTONE INT14 citations73
US4846441AJul 11, 1989
Methods and apparatus for adjusting a valve closure member
KEYSTONE INT16 citations73