Armand A Gregoli, Andrew M Olah, John A Hamshar, Daniel P Rimmer: Preparation of low-viscosity improved stable crude oil transport emulsions. Canadian Occidental Petroleum, John Wade Carpenter, January 8, 1991: US04983319 (237 worldwide citation)

A process for the preparation of low-viscosity improved stable crude oil transport emulsions. The process comprises producing a hydrocarbon crude, and mixing the produced hydrocarbon crude with an emulsifying composition(s) which contains water and is capable of assisting the formation of an oil-in- ...

Christian Beyer, Keith Trenton, Mariusch Gregor, Robert Stolle, Rudolph Bahnen, Anja Plugge, Heinz Frings, Karl Heinz Ronthaler, Dennis Smith, Jayesh Patel: Apparatus and method for regulating a pressure in a chamber. Applied Materials, Leybold Vacuum, Robert Kinberg, Michael A Sartori, Venable, August 31, 1999: US05944049 (90 worldwide citation)

A pressure for a chamber is regulated by controlling either the exhaust pressure at the exhaust side of a first vacuum pump or the internal pressure at a compression stage of the first vacuum pump, where the first vacuum pump is directly communicating with the chamber. The pressure of the chamber ca ...

Gene D Rose, Arthur S Teot, Peter A Doty: Process for reversible thickening of a liquid. The Dow Chemical Company, April 5, 1988: US04735731 (84 worldwide citation)

Industrial liquids containing viscoelastic surfactant compositions can be reversibly thickened and broken. For example, a thickened industrial liquid can exhibit good solids carrying capacity, and after the viscosity of the liquid is broken, using techniques such as change in pH, addition of a hydro ...

Robert Frederick Heinemann, David Da Teh Huang, Jinping Long, Roland Bernard Saeger: Process for making gas hydrates. Mobil Oil Corporation, Robert B Furr Jr, Malcolm D Keen, February 22, 2000: US06028234 (79 worldwide citation)

The present invention provides a process for continuously producing clathrate hydrate. This process includes comprising the steps of:

Raymond G Ziehm: Dual mode hot water circulation apparatus. July 26, 1994: US05331996 (64 worldwide citation)

A dual mode water circulation apparatus to provide instantaneous hot water to faucets remote from the heater in residential or small commercial building water systems. The apparatus comprises a cold water heat exchanger, a high sensitivity check valve, and an aspirator incorporated into a single uni ...

Kenneth G Phillips, Wood E Hunter: Method for reducing friction loss in a well fracturing process. Nalco Chemical Company, John G Premo, Robert A Miller, May 1, 1979: US04152274 (63 worldwide citation)

A method of reducing friction loss in oil well fracturing through the addition of small amounts of copolymers of acrylamide and quaternary salts of dimethylaminoethyl methacrylate and dimethylaminopropyl methacrylamide.

Fred David Martin, Jerry Emile Boothe: Friction reducing. Calgon Corporation, Rudolph J Anderson Jr, Harry E Westlake, Martin L Katz, March 9, 1976: US03943060 (44 worldwide citation)

Use of poly (dimethylaminomethyl acrylamide) as a friction reducer for aqueous fluids flowing through a conduit, especially for the aqueous hydraulic fracturing of subterranean formations.

William Weitzen: Dissolving polymers in compatible liquids and uses thereof. General Technology Applications, Roland H Shubert, July 20, 1982: US04340076 (43 worldwide citation)

This invention provides a technique for extremely rapid dissolution, or dispersion on essentially the molecular level, of certain polymeric materials in compatible liquid vehicles. The polymeric materials are comminuted at cryogenic temperatures and are then introduced into a liquid vehicle preferab ...

Richard C Gunter: Safety device for clamp for medical solution administration systems. Walter G Finch, March 17, 1981: US04256132 (43 worldwide citation)

The invention is an improved safety method and device for clamps used in medical solution administration systems. The safety device is an effective cover for the operating mechanism of the clamp that forces the attendant medical person to take deliberate action to reach the operating mechanism. In s ...

Kurt Gruber, Willi Keim, Klaus Hentschel: Process for transportation and distillation of petroleum with methanol. Mannesmannrohren Werke, Brisebois & Kruger, January 6, 1981: US04243493 (42 worldwide citation)

An improved petroleum distillation process in which methanol is added to the petroleum to be distilled and methanol/hydrocarbon azeotrope is recovered boiling at about 63.degree. C. which can be used as a fuel. The methanol can be derived from natural gas or another fossil fuel source. A methanol cr ...