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| Number | Title | Issue Date |
| 6783576 | Gas purifier system for removing trace impurities from a reactive fluid Gas purifier system containing a preconditioned ultra-low emission (P-ULE) carbon for reducing trace impurities such as organic compounds and carbon monoxide in reactive fluids such as ammonia, hydrogen chloride, hydrogen bromide, and chlorine to sub-ppb levels. P-U... | 08/31/2004 |
| 6783577 | Gas purifier system containing an ultra-low emission carbon material A gas purifier system containing an ultra-low emission (ULE) carbon material for reducing trace impurities such as organic compounds and carbon monoxide to sub-ppb levels in gases such as nitrogen, helium and argon. Ultra-low emission (ULE) carbon materials is capab... | 08/31/2004 |
| 6710012 | Method for producing an ultra-low emission carbon material Trace impurities such as organic compounds and carbon monoxide are reduced to sub-ppb levels in gases such as nitrogen, helium and argon, by gas purifying systems that contain an ultra-low emission (ULE) carbon material. Ultra-low emission (ULE) carbon materials is ... | 03/23/2004 |
| 6547861 | Method and materials for purifying reactive gases using preconditioned ultra-low emission carbon material Trace impurities such as organic compounds and carbon monoxide in reactive fluids such as ammonia, hydrogen chloride, hydrogen bromide, and chlorine are reduced to sub-ppb levels using gas purifying systems that contain a preconditioned ultra-low emission... | 04/15/2003 |
| 6425946 | Method and apparatus for removing trace impurities from a gas using superactivated carbon material Trace impurities such as organic compounds and carbon monoxide are reduced to sub-ppb levels in gases such as nitrogen, helium and argon, by gas purifying systems that contain an ultra-low emission (ULE) carbon material. Ultra-low emission (ULE) carbon ma... | 07/30/2002 |
| 4248736 | Fibrous adsorbent for hemoperfusion A hemoperfusion adsorbent is provided comprising a woven or knitted fibrous carbon adsorbent material having at least one coating thereon of a hydrophilic polymer. The adsorbent carbon fabric is preferably derived from a novolak-type phenolic resin. The h... | 02/03/1981 |
| 4134857 | Use of tannic or gallic acid to produce low beverage soluble iron content filter aid A low beverage soluble iron content filter aid, especially diatomite, is disclosed, as is the method for its production, which comprises contacting the granular filter aid with tannic acid, gallic acid, or mixtures thereof, preferable in aqueous solution.... | 01/16/1979 |
| 3996162 | Analytical sorbent and method of use An analytic sorbent material is prepared by wetting a particulate inorganic crystalline lattice material, such as magnesium silicate with an aqueous fluid such as a barbital buffer solution or distilled water, and thereafter heating the wetted sorbent unt... | 12/07/1976 |
