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| Number | Title | Issue Date |
| 7132583 | Transformation method of products containing amiantus A method for transforming a waste product containing or completely formed of amiantus comprising subjecting the waste product to several working phases and adding of components such as calcined alumina, clay and material having a given porosity so to produce a final... | 11/07/2006 |
| 6929200 | Method for preventing asbestos from freeing airborne particles The method for preventing asbestos from freeing airborne particles comprises sequentially heating and the asbestos in the following surrounding temperatures values and maintaining the asbestos in these surrounding temperature values until the asbestos changes to the... | 08/16/2005 |
| 6692715 | Silica nanofibers and method for preparing them Disclosed are novel silica gel nanofibers having an outer diameter lower than 100 nm, a length of up to 1 cm, a specific surface area of from 600 to 1000 m2 /g and pore diameters of from 2 to 10 nm. Also disclosed are novel silica glass nanofib... | 02/17/2004 |
| 5753033 | Composition and method to remove asbestos A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of a boron tetrafluoride salt, free of or having only small amounts o... | 05/19/1998 |
| 5753032 | Composition and method to remove asbestos A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of phosphoric acid, and from about 0.1 to about 4% by weight of a sou... | 05/19/1998 |
| 5753034 | Composition and method to remove asbestos A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of a hexafluorosilicate salt, and free of or having only small amount... | 05/19/1998 |
| 5753035 | Composition and method to remove asbestos A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an inorganic acid, and from about 0.1 to about 4% by weight of a t... | 05/19/1998 |
| 5516973 | Method for treating asbestos A method for rendering asbestos in an asbestos-containing material harmless comprises wetting the material with an aqueous solution containing about 1 to 25% by weight of an organic acid, such as trifluoroacetic acid and at least 1% by weight of a source ... | 05/14/1996 |
| 5264655 | Method and products for treating asbestos A method for rendering asbestos in an asbestos-containing material harmless comprises wetting the material with an aqueous solution containing about 1 to 25% by weight of an organic acid, such as trifluoroacetic acid and at least 1% by weight of a source ... | 11/23/1993 |
| 5258562 | Method for treating asbestos A method for treating asbestos-containing material for removing such material from a substrate where it is installed and for destroying the asbestos in such asbestos-containing material, comprising wetting the material with an aqueous solution containing ... | 11/02/1993 |
| 5085838 | Thermal modification of asbestos A process is provided for converting asbestoform material into an environmentally safe material by heating the asbestoform material with an alkaline flux so as to change the crystalline structure of the asbestoform material to a form that is environmental... | 02/04/1992 |
| 4818143 | Asbestos decomposition A method for decomposing and disposing of asbestos compounds through the use of a two part chemical process. The first step in the chemical process involves the decomposition of asbestos through the use of sulfuric acid. The second step of the process inv... | 04/04/1989 |
