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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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