121
Oppliger Hans R: High precision wide dynamic range viscous loss measuring apparatus. National Metal and Refining Company, January 16, 1973: US3710614 (19 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 vibratory member to oscillate. The amplitude of the oscillations is sensed as an AC voltage by a transducer, and converted to a DC vo ...


122
Paul A Aristoff: Composition and process. The Upjohn Company, L Ruth Hattan, Robert A Armitage, December 13, 1983: US04420632 (19 worldwide citation)

The present specification provides novel analogs of carbacyclin (CBA.sub.2), 6a-carba-prostacyclin (6a-carba-PGI.sub.2), which have pronounced prostacyclin-like pharmacological activity, e.g., as platelet antiaggregatory agents. Specifically the novel chemical analogs of CBA.sub.2 are those substitu ...


123
Enoch I Wang, Lifun Lin, William L Bowden: Electrochemical cell comprising gamma MnO.sub.2 cathode having filamentary protrusions. Duracell, Ronald S Cornell, Barry D Josephs, January 9, 1996: US05482796 (19 worldwide citation)

The invention relates to the manufacture of manganese dioxide by a chemical process. The resulting manganese dioxide product takes the form of particles characterized by filament-like protrusions jutting out from its surface. The manganese dioxide particles having such surface features can be manufa ...


124
Takeo Kagatani: Power device. Ward & Olivo, April 3, 2001: US06211643 (19 worldwide citation)

The present invention relates generally to a new power device. More specifically, it creates hydrogen from supplied water and electricity. The hydrogen is then used in combination with air in an electrolysis-electrical cell to produce electric power. All of this is accomplished by first storing the ...


125
Adam T Lee, Kuang Wu, Larry Burton: Downcomer for chemical process tower and method of forming the same. Koch Enterprises, Shook Hardy & Bacon L, April 20, 1999: US05895608 (18 worldwide citation)

A chemical process tower tray construction incorporating a tapered semi-conical downcomer adaptive for discharging liquid along an arcuate edge portion of an underlying tray. The underlying tray is of the type supported within the chemical process tower by a support ring which is positioned beneath ...


126
Jean P Couput, Guy Campet, Jean M Chabagno, Daniel Muller, Maurice Bourrel, Ryan Dirkx, Didier Ferry, Regine Garie, Claude Delmas: Electrochromic element, materials for use in such element, processes for making such element and such materials and use of such element in an electrochromic glass device. Elf Atochem North America, Societe Nationale Elf Aquitaine, Finnegan Henderson Farabow Garrett & Dunner, January 4, 1994: US05276547 (18 worldwide citation)

An electrochromic element useful in an electrochromic glass or mirror device and a process for making such element. The element is a five-layered structure including an electrolyte ion conducting layer interposed between first and second inorganic electrochromic layers which are interposed between a ...


127
Michael B Frish, Joseph Morency, Stephen A Johnson, Arthur A Boni: Apparatus for combustion, pollution and chemical process control. PSI Environmental Instruments, Testa Hurwitz & Thibeault, January 4, 1994: US05275553 (18 worldwide citation)

Disclosed is a system for regulating the efficiency of a combustion process by detecting radiant energy emitted from ash particles entrained in the gas stream exiting the combustion chamber of a boiler or incinerator. The intensity of selected wavelengths of light emitted from the particles is indic ...


128
Paul Joseph Andersen, Hai Ying Chen, Joseph Michael Fedeyko, Erich Weigert: Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides. Johnson Matthey Public Company, RatnerPrestia, August 16, 2011: US07998443 (18 worldwide citation)

A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducin ...


129
David C Stark: Chemical process fired heaters, furnaces or boilers. Foster Wheeler USA Corporation, Marvin A Naigur, Martin Smolowitz, November 15, 1988: US04784069 (18 worldwide citation)

In a chemical process plant or the like, of the type having a gas turbine driven compressor and a fired heater for heating the process medium, and of the type which hitherto used the exhaust (GTE) of one or more gas turbines as an oxidizing medium input for oxidizing the fuel in the radiant section ...


130
William A Farone: Method for monitoring and controlling a chemical process. November 16, 1993: US05262961 (18 worldwide citation)

An on-line method of monitoring and controlling a chemical process is based on measuring the concentration of process reactants and products using spectrometric technology. The spectral data is analyzed using a modified chi-squared processing method to determine the unknown concentration of reactant ...