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Class Information
Number: 252/378P
Name: Compositions > Exfoliated or intumesced > Perlite
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
6756426 Lightweight composite material for protective pads, cushions, supports or the like and method Jun. 29, 2004
6712898 Perlite products with controlled particle size distribution Mar. 30, 2004
6464770 Perlite products with controlled particle size distribution Oct. 15, 2002
6379454 Finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings Apr. 30, 2002
5911818 Acoustical tile composition Jun. 15, 1999
5542976 Refractory imitation fireplace objects Aug. 6, 1996
5336318 Clay-free, asbestos-free and glass microbubble-free drying type joint compounds Aug. 9, 1994
5294255 Pumpable backfill grout Mar. 15, 1994
5160710 Apparatus for continuous production of intumesced particles Nov. 3, 1992
5116537 Low temperature expandable vermiculite and intumescent sheet material containing same May. 26, 1992
5114617 High strength structural perlite concrete May. 19, 1992
5002696 Expanded mineral particles and apparatus and method of production Mar. 26, 1991
4931211 Process of expanding obsidian Jun. 5, 1990
4889747 Hydrophobic expanded perlite compositions and process for preparing the same Dec. 26, 1989
4830797 Process for the production of closed gas-cellular granular materials May. 16, 1989
4721582 Toxic gas absorbent and processes for making same Jan. 26, 1988
4693924 Decorative tile Sep. 15, 1987
4687694 Decorative tile Aug. 18, 1987
4664623 Process and apparatus for the thermal treatment of trickling material swellable or rendered swellable, and containing aluminosilicates May. 12, 1987
4629508 Process for forming hydrated calcium silicate products Dec. 16, 1986
4592722 Process and apparatus for forming lightweight inorganic aggregate Jun. 3, 1986
4559719 Method for processing matter in a turbulent mass of particulate material Dec. 24, 1985
4525388 Process for expanding and coating perlite Jun. 25, 1985
4521182 Method and apparatus for heating particulate material Jun. 4, 1985
4520073 Pressure coating of mineral fillers May. 28, 1985
4454267 Lightweight joint compound Jun. 12, 1984
4401586 Process for thermally expanding silicate-based material by an infrared heat source Aug. 30, 1983
4347155 Energy efficient perlite expansion process Aug. 31, 1982
4342554 Production of expanded clay and shale Aug. 3, 1982
4318691 Furnace for expanding mineral ores Mar. 9, 1982
4304704 Thermal insulating material Dec. 8, 1981
4290749 Perlite expansion process and apparatus therefor Sep. 22, 1981
4255489 Perlite filler Mar. 10, 1981
4233379 Separator for starved electrolyte lead/acid battery Nov. 11, 1980
4183980 Perlite filler coated with polydimethylsiloxane Jan. 15, 1980
4179264 Method for expanding perlite Dec. 18, 1979
4175158 Agglomerating particulate perlite Nov. 20, 1979
4148941 Process for dust reduction treatment of expanded perlite Apr. 10, 1979
4034704 Substrate support for vacuum coating installation Jul. 12, 1977
3985935 Alkali resistant perlite - CaO vitreous fibers Oct. 12, 1976
3961978 Process for producing perlite microspheres Jun. 8, 1976











 
 
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