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Inventor

COHEN JOHN H

US9 patents
⚠️ This page may combine multiple inventors who share the name “COHEN JOHN H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GAS RES INST

3 patents
US4632191ADec 30, 1986

Steering system for percussion boring tools

GAS RES INST49 citations92
US4621698ANov 11, 1986

Percussion boring tool

GAS RES INST46 citations92
US4949795AAug 21, 1990

Rotary rapid excavation system

GAS RES INST19 citations81

BROOKLYN UNION GAS CO

2 patents
US5624206AApr 29, 1997

Apparatus and method for supporting pipe main repair tools in an excavation

BROOKLYN UNION GAS CO28 citations91
US5462077AOct 31, 1995

Apparatus and method for shutting off fluid flow in a pipe main

BROOKLYN UNION GAS CO44 citations91

(unassigned)

1 patent
US6012532AJan 11, 2000

Method and apparatus for prevention, suppression or mitigation of explosions in confined subterranean chambers

21 citations91

CAMERON IRON WORKS INC

1 patent
US4152015AMay 1, 1979

Casing hanger

CAMERON IRON WORKS INC13 citations72

TALAMO EMIL R

1 patent
US9322230B2Apr 26, 2016

Direct drive fluid pump for subsea mudlift pump drilling systems

TALAMO EMIL R5 citations63

ENHANCED DRILLING AS

1 patent
US10053944B2Aug 21, 2018

Riser restrictor device

ENHANCED DRILLING AS0 citations39