61
Fitzgerald J Vincent, Matusik Frank J, Oppliger Hans R: High precision wide dynamic range viscous loss measuring apparatus. National Metal and Refining Company, January 23, 1973: US3712117 (32 worldwide citation)

A viscosity measuring system especially useful in pollution and chemical process control applications. A variable gain amplifier drives a magnetic coil which causes a torsion member to oscillate. The amplitude of the oscillations is sensed by a transducer, and converted to a DC voltage by an amplitu ...


62
Donald C Erickson: Separation of oxygen from gaseous mixtures with molten alkali metal salts. January 2, 1979: US04132766 (32 worldwide citation)

Oxygen is separated from air by a regenerative chemical process. Air is contacted with an oxygen acceptor comprised of a molten solution of alkali nitrite and nitrate salts at elevated temperature and pressure, causing the oxygen to react with the nitrite, and thereby increasing the proportion of ni ...


63
Michael J Binkley: Method of and apparatus for flow promotion. Glitsch, Johnson & Gibbs, March 9, 1993: US05192466 (31 worldwide citation)

Method of and apparatus for imparting directional liquid flow on a chemical process tower tray. A series of raised tray areas are disposed about the tray surface for affecting preferential vapor flow therethrough. The raised tray regions are constructed with directional flow louvers for creating a d ...


64
Pramod B Koradia, Carmine M Doddato, Daniel C Sherman, William H Gerdes: Catalyst carrier. Norton Chemical Process Products, David Bennett, November 30, 1993: US05266548 (31 worldwide citation)

Porous carrier materials comprising at least 90% by weight of at least 95% pure alpha alumina are very effective as supports for catalysts treating engine exhausts and are significantly better able to withstand extreme conditions than conventional supports.


65
Edwin Robinson, David Buckle: Disposal of waste products by combustion. Deborah Fluidised Combustion, Reising Ethington Barnard Perry & Brooks, June 2, 1981: US04270468 (31 worldwide citation)

A method of disposing of waste products from the chemical process industries, especially as a result of the re-refining of oils. The waste products are burnt in a fluidized bed in which the bed material is fluidized in a non-uniform to effect circulation thereof so as to complete combustion at such ...


66
Cooper Theodore W: Method and system for open cycle operation of internal combustion engines. Flehr Hohbach Test Albritton & Herbert, February 19, 1974: US3792690 (31 worldwide citation)

A method and system for the open cycle operation of an internal combustion engine to achieve more complete combustion and increased efficiency, and to effectively reduce or eliminate harmful exhaust pollutants. A combustible charge is formed in a combustion chamber of the engine with a given ratio o ...


67
D Sangeeta: Thermal barrier coating removal on flat and contoured surfaces. General Electric Company, Noreen C Johnson, William H Pittman, July 1, 1997: US05643474 (31 worldwide citation)

The invention is directed towards a wet chemical process for removing physical vapor deposited or air plasma sprayed thermal barrier coatings from coated parts without damaging or effecting the bond coat or the base metal substrate. The process entails using an autoclave with an organic caustic solu ...


68
Edwin A Richardson, Ronald F Scheuerman, David C Berkshire: Chemical process for backsurging fluid through well casing perforations. Shell Oil Company, August 26, 1980: US04219083 (31 worldwide citation)

A backsurge of fluid through perforations in a well casing is chemically induced by injecting into the surrounding reservoir a solution which contains (a) nitrogen gas-generating reactants, (b) a reaction-retarding alkaline buffer, and (c) a pH-reducing reactant that is capable of subsequently overr ...


69
Ioan Negrutiu, Ingo Potrykus: Process for transforming plant protoplast. Ciba Geigy Corporation, James Scott Elmer, April 16, 1996: US05508184 (30 worldwide citation)

The present invention relates to an improved process for transforming plant protoplasts using simple, purely chemical, process steps, and to the plant material obtainable by this method.


70
Bjorn Staffan Artur Hamrin: Pellets in the form of foamed bodies, and methods for the preparation thereof. Aktiebolaget Forenode Superfosfatfabrika Landskrona, Ralph E Bucknam, Jesse D Reingold, Henry A Marzullo Jr, September 5, 1972: US3688437 (30 worldwide citation)

A method for covering and enlarging individual seeds by a chemical process, comprising the steps of introducing said seeds into a first solution containing at least one gelatinizable compound and a catalyst for the decomposition of a further compound capable of giving off a gas, and then introducing ...



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