1
Gerald B Hoekstra, David R Christian: In situ retorting of oil shale. Standard Oil Company, Gulf Oil Corporation, Thomas W Tolpin, William T McClain, William H Magidson, October 12, 1982: US04353418 (254 worldwide citation)

Disclosed are a method and apparatus for the in situ retorting of oil shale and purification products comprising establishing an underground in situ retort containing a mass of rubblized matter comprising oil shale and establishing a flame front within the rubblized matter. Oxygen containing gas com ...


2
Miller Jr Park H: Temperature measuring apparatus. Gulf Oil Corporation, July 27, 1971: US3595082 (236 worldwide citation)

A method and apparatus for measuring temperature under difficult environmental conditions, in which the temperature of a fluid between two reflective means is determined acoustically by recording the received reflections and determining their spacing by pulse compression techniques.


3
John M Forgac, George R Hoekstra: Pulsed in situ retorting in an array of oil shale retorts. Standard Oil Company, Gulf Oil Corporation, Thomas W Tolpin, William T McClain, R C Medhurst, November 12, 1985: US04552214 (222 worldwide citation)

Greater product yield and quality and continuous upgrading of shale oil with hydrogen-rich, purge mode off gases is attained by pulsing in situ retorts at different phases and intervals. In the process, flow of feed gases to the flame fronts of underground retorts are sequentially stopped and purged ...


4
Olaf A Larson, Charles W Matthews: Process for recovering shale oil. Gulf Oil Corporation, June 19, 1979: US04158467 (190 worldwide citation)

An improved process for recovering shale oil from in-situ shale comprising the steps of: (1) mining a first portion of said shale; (2) fragmenting a second portion of said shale; (3) introducing into said second portion a mixture of gases comprising a molecular oxygen supplying gas, carbon dioxide a ...


5
Peter Albulescu, Joseph F McMahon: Method and apparatus for recovery of fluids produced in in-situ retorting of oil shale. Gulf Oil Corporation, Standard Oil Company, October 10, 1978: US04119349 (148 worldwide citation)

Gaseous and liquid products discharged from the outlet of an in-situ retort for the retorting of oil shale are delivered into an underground separating chamber located substantially at the level of the bottom of the retort. The lower portion of the separating chamber is divided by a weir into a firs ...


6
Richard G Sinclair: Copolymers of D,L-lactide and epsilon caprolactone. Gulf Oil Corporation, August 30, 1977: US04045418 (139 worldwide citation)

Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically inactive lactide, i.e., D,L-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 85 parts by weight of D,L-lactide and 1 ...


7
Richard G Sinclair: Copolymers of L-(-)-lactide and epsilon caprolactone. Gulf Oil Corporation, November 8, 1977: US04057537 (129 worldwide citation)

Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically active lactide, i.e., L-(-)-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 75 parts by weight of L-(-)-lactide and ...


8
Koutz Stanley L: Energy storage system and method. Gulf Oil Corporation, July 18, 1972: US3677008 (102 worldwide citation)

A method and system are described for using compressed air for storing and utilizing energy. Air is compressed and stored and the heat of compression is removed from the air prior to storage. The air is subsequently removed from storage and the stored heat is restored to the air prior to expansion o ...


9
Bokros Jack C, Ellis Willard H: Orthopedic device for repair or replacement of bone. Gulf Oil Corporation, December 26, 1972: US3707006 (85 worldwide citation)

Prosthetic devices for repair of replacement of bone structure in a living body, and methods of orthopedic repair which employ such devices. The orthopedic devices comprise a substrate and a pyrolytic carbon coating on the substrate, which pyrolytic carbon coating is compatible with living tissue an ...


10
Bokros Jack C: Percutaneous implant. Gulf Oil Corporation, Fitch Even Tabin & Luedeka, January 8, 1974: US3783868 (68 worldwide citation)

A percutaneous device for drug injection in a living body which is implanted through the skin and which has a pyrolytic carbon coating. The device has a stem and a stabilizing flange, and a collar associated with the stem for preventing the progressive growth of epithelium tissue along the stem and ...