Gene H Shipman: Microporous sheet material, method of making and articles made therewith. Minnesota Mining and Manufacturing Co, Donald M Sell, James A Smith, Richard Francis, September 3, 1985: US04539256 (304 worldwide citation)

A method of making a microporous material is provided which comprises the steps of melt blending crystallizable thermoplastic polymer with a compound which is miscible with the thermoplastic polymer at the melting temperature of the polymer but phase separates on cooling at or below the crystallizat ...

Cecil C Gentry, Henry E Alquist: Method and apparatus for treatment of subsurface formations. Phillips Petroleum Company, French Hughes & Doescher, October 2, 1984: US04474238 (229 worldwide citation)

A method of extracting bitumen from a subsurface tar sand bed wherein a shell of frozen earth is formed around the periphery of at least a portion of the tar sand bed, followed by recovering bitumen from such portion of the tar sand bed within the shell of frozen earth by suitable means such as, for ...

George Albers Schonberg, Hyman Wallick, Robert E Ormond, Thomas W Miller, Richard W Burg: Novel substances and process for their production. Merck & Co, David L Rose, Harry E Westlake, January 12, 1982: US04310519 (166 worldwide citation)

Novel compounds are produced by the fermentation of a nutrient medium with the previously undescribed microorganism Streptomyces avermitilis. They may be isolated by solvent extraction and chromatographic fractionation techniques. The compounds, which are described generically as C-076 have signific ...

David A Hill, Durk J Pearson, Ethelyn P Motley, Thomas N Beard, James L Farrell: Recovery system for oil shale deposits. TRW, John J Connors, Benjamin DeWitt, Donald R Nyhagen, December 27, 1977: US04065183 (140 worldwide citation)

A process for the in-situ recovery of hydrocarbon, carbon monoxide, and hydrogen values and associated minerals from subsurface oil shale deposits is provided by forming a gas-tight retort chamber and injecting it with a hot, pressurized gas followed by a solvent extraction and finally a combustion ...

Barbara D Boyan, Chandra M Agrawal, James D Heckman: Biodegradable implant for fracture nonunions. Board of Regents Univ of Texas System, Greenlee and Winner, February 20, 1996: US05492697 (130 worldwide citation)

A biodegradable implant for placement in nonunion bone fractures as a substitute for bone graft material is provided which is a flat plate or disk having a thickness of between about 1 mm and about 15% of the length of the bone, interconnected micropores, and canals substantially equivalent in size ...

Raymond M Gladue, Paul W Behrens: DHA-containing nutritional compositions and methods for their production. Martek Biosciences, Brobeck Phleger & Harrison, April 16, 2002: US06372460 (121 worldwide citation)

This invention provides a particulate material suitable for use as a nutritional supplement, particularly as an aquaculture feed. The particulate material has a high proportion of DHA residues in the lipid fraction, which may be up to 35% of the material, or even more. Preferably, the material has a ...

Daniel W Tedder: Process for recovering alcohol with energy integration. Georgia Tech Research Corporation, Deveau Colton & Marquis, June 1, 1993: US05215902 (91 worldwide citation)

A process for recovering alcohol by a continuous process employing fermentation, solvent extraction of the alcohol product, extractive distillation of the alcohol-solvent extract to provide water fraction and vacuum stripping for separation of the alcohol and regenerated solvent.

James McGregor, Paul W Watt, Nicholas D Light, Wilson Harvey: Absorbable implant materials having controlled porosity. Johnson & Johnson Medical, Andrew C Farmer, February 9, 1999: US05869080 (84 worldwide citation)

Absorbable implant materials having controlled porosity are formed by a method comprising the steps of: providing a dispersion of a bioabsorbable polymer, such as collagen, in a first solvent, such as water; adding particles of a second material, e.g. frozen water droplets or ice particles to the di ...

Lester T C Lee, Win Sow Ho, Kang Jen Liu: Membrane solvent extraction. Allied Chemical Corporation, Arthur J Plantamura, May 11, 1976: US03956112 (84 worldwide citation)

A membrane solvent extraction system is utilized to separate two substantially immiscible liquids and extract a solute through a solvent swollen membrane from one solvent liquid phase to the extracting solvent liquid without direct contact between the liquid phases. The membrane extraction method ha ...

John G Victor: Method for solvent recovery in solvent separation of ethanol from water. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, May 28, 1985: US04520213 (83 worldwide citation)

A process for the separation of ethanol from water using solvent extraction at elevated pressures is disclosed. Separation is effected by contacting aqueous ethanol with either propylene (propene), allene (propadiene), methyl acetylene (propyne), or methyl allene (1,2-butadiene). This produces two l ...