Inventor

DUNN STEPHEN

US11 patents

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

DUNN STEPHEN

2 patents

US8978400B2Mar 17, 2015

Air cooled helium compressor

DUNN STEPHEN8 citations80

US8776534B2Jul 15, 2014

Gas balanced cryogenic expansion engine

DUNN STEPHEN5 citations68

INT COMPUTERS LTD

1 patent

US5668991ASep 16, 1997

Database management system

INT COMPUTERS LTD85 citations90

YEDA RES & DEV

1 patent

US7947165B2May 24, 2011

Method for extracting and upgrading of heavy and semi-heavy oils and bitumens

YEDA RES & DEV14 citations82

SUMITOMO HEAVY INDUSTRIES

1 patent

US7674099B2Mar 9, 2010

Compressor with oil bypass

SUMITOMO HEAVY INDUSTRIES13 citations82

JAGGARD STEVE

1 patent

US10208889B2Feb 19, 2019

Collapsible three legged platform

JAGGARD STEVE6 citations72

KAMYR INC

1 patent

US5411633AMay 2, 1995

Medium consistency pulp ozone bleaching

KAMYR INC18 citations72

NENNIGER JOHN

1 patent

US8857512B2Oct 14, 2014

Situ extraction process for the recovery of hydrocarbons

NENNIGER JOHN4 citations71

TCG PARTNERS LLC—INTELLECTUAL PROPERTY SERIES

1 patent

US10791873B2Oct 6, 2020

Collapsible three legged platform

TCG PARTNERS LLC—INTELLECTUAL PROPERTY SERIES1 citations54

SUMITOMO (SHI) CRYOGENICS OF AMERICA INC

1 patent

US9581360B2Feb 28, 2017

Gas balanced cryogenic expansion engine

SUMITOMO (SHI) CRYOGENICS OF AMERICA INC0 citations48

SUMITOMO SHI CRYOGENICS OF AMERICA INC

1 patent

US11149992B2Oct 19, 2021

Dual helium compressors

SUMITOMO SHI CRYOGENICS OF AMERICA INC0 citations44