1
Jitendra G Patel, William A Sandstrom, Paul B Tarman: Process for the production of fuel gas from coal. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, February 16, 1982: US04315758 (63 worldwide citation)

An improved apparatus and process for the conversion of hydrocarbonaceous materials, such as coal, to more valuable gaseous products in a fluidized bed gasification reaction and efficient withdrawal of agglomerated ash from the fluidized bed is disclosed. The improvements are obtained by introducing ...


2
Mark J Khinkis, Jitendra G Patel, William A Sandstrom: Two stage combustion. Institute of Gas Technology, Thomas W Speckman, August 8, 1989: US04854249 (33 worldwide citation)

A process for combusting sulfur and nitrogen containing carbonaceous materials in a two stage combustion process wherein sulfur and nitrogen containing carbonaceous materials and sulfur fixation agent particulates are introduced into a first combustion stage single fluidized bed having a density/siz ...


3
William A Sandstrom, Jitendra G Patel, John R Bush: Process for thermal and pneumatic treatment of granular solids. Institute of Gas Technology, Thomas W Speckman, February 11, 1986: US04569696 (10 worldwide citation)

Granular solids are thermally and pneumatically treated to remove organic and inorganic chemical additives which are bonded to the granular solids or in admixture with them, to provide a purified granular solid product which is suitable for reuse, for example foundry sand for use in high strength mo ...


4
William A Sandstrom, Jitendra G Patel, John R Bush: Apparatus for thermal and pneumatic treatment of granular solids. Institute of Gas Technology, Thomas W Speckman, January 13, 1987: US04636168 (8 worldwide citation)

An apparatus for thermally and pneumatically treating granular solids to remove organic and inorganic chemical additives which are bonded to the granular solids or in admixture with them, to provide a purified granular solid product which is suitable for reuse, for example foundry sand for use in hi ...