21
Keith A Schimel: Apparatus, system, and process for anaerobic conversion of biomass slurry to energy. Keith A Schimel, Thomas R FitzGerald Esq, December 16, 2003: US06663777 (28 worldwide citation)

An improved digester apparatus converts wet carbonaceous biomass materials to biogas in a digestion unit operating at a controlled temperature and having a concentrator component and a pressure swing component each containing anaerobic bacteria. The apparatus conveys slurried aqueous biomass from a ...


22
Joseph F Tinney: Four-cycle fuel-lubricated internal combustion engine. Science Applications International, Banner & Witcoff, April 8, 2003: US06543394 (27 worldwide citation)

A four-cycle, fuel lubricated, internal combustion engine system suited for a vehicle includes a fuel tank containing fuel at a remote location from the engine, a first fluid path for transporting fuel to the lubrication system of the engine, and a second fluid path for transporting fuel to said com ...


23
Robert O Hoffland: Method and apparatus for treating animal waste and wastewater. Hoffland Environmental, The Matthews Firm, February 28, 2006: US07005068 (26 worldwide citation)

Novel methods and apparatuses are disclosed for the treatment of wastewater to reduce often associated offensive odors by promoting aerobic conditions through decreasing the amount of oxygen required to maintain aerobic cultures and/or aerobic biological activity in the wastewater. Also, the wastewa ...


24
Larry P Sower: Fertilizer manufactured from animal wastes and method of producing same. Crystal Peak Technologies, Workman Nydegger, January 25, 2005: US06846343 (25 worldwide citation)

Integrated waste treatment and fertilizer and feed supplement production methods to be implemented at organic waste source sites, at remote treatment sites, or partially at the organic waste source site and at a remote location, whether in small or large scale operations. The methods are suitable fo ...


25
Robert Paton: Anaerobic digestion of organic waste for biogas production. Biorganic Energy, Roylance Abrams Berdo & Goodman, March 5, 1985: US04503154 (25 worldwide citation)

A low solids aqueous suspension of organic waste is treated in at least four, e.g., six serial anaerobic zones at a temperature of less than 40.degree. C. and under quiescent conditions to provide methane, fertilizer and a clean liquid effluent.


26
Yves Lebesgue, Alexandru Zeana: Process and installation for simultaneously producing compost and biogas from organic waste. Societe Multibio, Scully Scott Murphy & Presser, December 30, 1986: US04632692 (24 worldwide citation)

The invention relates to a process for the simultaneous treatment of solid or semi-solid organic waste and liquid organic waste with a view to the simultaneous production of compost and biogas.


27
Larry J Raven: Process and apparatus for conversion of biodegradable organic materials into product gas. Mark D Miller, September 24, 2002: US06454944 (23 worldwide citation)

A method and apparatus for efficiently generating biogas from feedstocks composed of 10 to 100 percent biodegradable solids including carbohydrates, starches and/or sugars, for a variety of uses including the creation of electricity. The apparatus includes a thermophilic digester and a mesophilic di ...


28
Rudolf W Gunnerman, Peter W Gunnerman: Continuous process and plant design for conversion of biogas to liquid fuel. Kilpatrick Townsend & Stockton, M Henry Heines, March 1, 2011: US07897124 (22 worldwide citation)

Biogases such as natural gas and other gases capable of being biologically derived by digestion of organic matter are converted to a clean-burning hydrocarbon liquid fuel in a continuous process wherein a biogas is fed to a reaction vessel where the biogas contacts a liquid petroleum fraction and a ...


29
George Valkanas, Apostolos G Vlyssides: Industrial utilization of garbage with effective recycling and with optimization in energy production. Innoval Management, Birch Stewart Kolasch & Birch, January 2, 2001: US06168642 (22 worldwide citation)

A recycling process for garbage containing a high proportion of paper where printed paper is first separated from the garbage. The garbage is then into pieces and light and heavy components are separated out in a classification tank. The remaining organic mass suspended in water is hydrolyzed and su ...


30
Leon Breckenridge: Anaerobic digester system. Stratton Ballew PLLC, October 2, 2001: US06296766 (21 worldwide citation)

A method for an anaerobic digester system is provided that employs a cumulative data base to better monitor and control the anaerobic process, as compared with conventional anaerobic digester systems. The method includes the storing and ensiling of a feedstock, preferably a biomass, to form a digest ...



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