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| Number | Title | Issue Date |
| 7151100 | Indole compounds useful for the treatment of cancer The present invention provides novel indole derivatives useful to inhibit cancer or sensitize cancer cells to chemotherapeutic agents, radiation or other anti-cancer treatments. ... | 12/19/2006 |
| 6861039 | Method for purification of phosphoric acid high purity polyphosphoric acid The present invention provides a purification method of phosphoric acid, which includes bringing phosphoric acid containing arsenic into contact with hydrogen halide, thereby to remove the arsenic from the phosphoric acid, and a purification method of phosphoric aci... | 03/01/2005 |
| 6846493 | Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phosphorous, wh... | 01/25/2005 |
| 6812231 | Benzamidine derivative Benzamidine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an effect of inhibiting activated blood-coagulation factor X, and they are useful as agents for preventing or treating ... | 11/02/2004 |
| 6616906 | Method for making polyphosphoric acid An improved method for making polyphosphoric acid from phosphoric acid includes the steps of introducing a first phosphoric acid feed stream into the top end of a packed column, introducing a second phosphoric acid feed stream into a stream of hot air to ... | 09/09/2003 |
| 6608046 | ଲ-lactamase and DD-peptidase inhibitors The invention provides novel ଲ-lactamase inhibitors, which are structurally unrelated to the natural product and semi-synthetic ଲ-lactamase inhibitors presently available, and which do not possess ଲ-lactam pharmacophore. These new inhibi... | 08/19/2003 |
| 6599889 | Acyl phosphonate inhibitors of ଲ-lactamases The invention provides novel ଲ-lactamase inhibitors, which are structurally unrelated to the natural product and semi-synthetic ଲ-lactamase inhibitors presently available, and which do not possess a ଲ-lactam pharmacophore. These new inhi... | 07/29/2003 |
| 6585992 | Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phos... | 07/01/2003 |
| 6440380 | Preparation of phosphorus (I) oxides, phosphorus (III) oxides, and lower hydrides of phosphorus by catalytic reduction of phosphorus (V) oxides A process for the manufacture of phosphorus (I) species, phosphorus (III) species, and lower hydrides of phosphorus from phosphorus (V) species is provided. Particularly, the present invention is directed to a process for the preparation of P(I) species, ... | 08/27/2002 |
| 6410538 | Benzamidine derivatives Benzamidine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an effect of inhibiting activated blood-coagulation factor X, and they are useful as agents for preventing o... | 06/25/2002 |
| 6365592 | Phosphonic and carboxylic acid derivatives as inhibitors of protein tyrosine phosphatase-1B (PTP-1B) The invention encompasses compounds represented by formula I: ##STR1## as well as compositions and methods of treatment. The compounds are inhibitors of the PTP-1B enzyme.... | 04/02/2002 |
| 6323146 | Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phos... | 11/27/2001 |
| 6238637 | Process and apparatus for preparation of phosphorus oxyacids from elemental phosphorus A process for the preparation of an oxyacid of phosphorus comprising contacting elemental phosphorus with water in the presence of a catalyst effective to promote oxidation of phosphorus by reaction with water. The use of a noble metal catalyst such as Pd... | 05/29/2001 |
| 6136221 | Phosphation reagent The invention relates to a process for producing a unique phosphation reagent and to a simple, single-stage process utilizing is reagent to produce alkyl phosphate esters having high monoalkyl phosphate content in combination with low dialkyl phosphate, t... | 10/24/2000 |
| 5368832 | Zero discharge process for manufacturing of phosphorous acid and hypophosphorous acid Disclosed is a method of making phosphorous acid or hypophosphorous acid by reacting hydrogen chloride with a sodium phosphite or a sodium hypophosphite, respectively, in the presence of water to precipitate sodium chloride crystals and form the acid. The... | 11/29/1994 |
| 5208000 | Hydrolysis of phosphorus trichloride There is disclosed a process for the controlled hydrolysis of phosphorus trichloride which avoids the formation of lower oxides of phosphorus, phophines and diphosphines wherein phosphorus pentachloride is added to the phosphorus trichloride from about 20... | 05/04/1993 |
| 5147625 | Process for the preparation of phosphorous acid In a continuous process for the preparation of phosphorous acid with simultaneous production of hydrochloric acid, a reaction zone is provided which is in open communication with a first scrubbing zone. A portion of the reaction product is recycled from t... | 09/15/1992 |
| 5085846 | Process for producing phosphorous acid Phosphorous acid is made by a continuous recycling process from a mixture of phosphorous and hydrochloric acids, comprising: (i) continuously recycling the mixture in a loop apparatus; (ii) adding water to and passing phosphorus trichloride into said recycling ... | 02/04/1992 |
| 4988489 | Recovery of phosphorus values from waste phosphoric acid liquors The phosphorus values from waste phosphoric acid containing organic contaminents such as wastes obtained in the manufacture of quinacridone pigments can be recovered in purified form by hydrolyzing phosphate esters, removing any formed alcohol, dissociati... | 01/29/1991 |
| 4980142 | Preparation of phosphorous acid Phosphorous acid is formed by gaseous phase oxidation of phosphorus with water vapour to form predominantly P2 O3 and dissolving the P2 O3 so-formed in water. The P2 O3 also can be recovere... | 12/25/1990 |
| 4834960 | Process for purifying phosphorous acid The purification of phosphorous acid which is formed in halogenations of hydrocarbon derivatives using phosphorus trihalides is carried out in the context of preparing phosphorous acid in a reaction zone by reacting a mixture of phosphorus trichloride and... | 05/30/1989 |
| 4808391 | Oxidation-reduction process for enhancing the color of and stabilizing wet process phosphoric acid A two-stage oxidation/reduction process for preparing commercially valuable, color enhanced and stabilized low viscosity wet process phosphoric acid is provided which yields improved acid that can be concentrated to superphosphoric acid and/or converted t... | 02/28/1989 |
| 4551320 | Treatment of concentrated phosphoric acid The calcium content of high purity concentrated phosphoric acid is reduced to not more than about 2 ppm by contacting the acid with a strong cation exchange resin.... | 11/05/1985 |
| 4551319 | Two-stage concentration for superphosphoric acid A process for the concentration of phosphoric acid by evaporation under vacuum in two stages to produce superphosphoric acid, the pressure inside the exchanger is kept equal to or greater than 0.35 bar higher than that in the evaporator vessel.... | 11/05/1985 |
| 4536378 | Phosphate fertilizer production Processes for the preparation of phosphoric acid, such as merchant phosphoric acid, and for the provision of phosphoric acid suitable for the preparation of ammonium phosphates, are disclosed. Such processes comprise providing a source stream of phosphori... | 08/20/1985 |
| 4495165 | Method of purification of phosphoric acid Appreciable inorganic impurities and organic matter are removed from impure phosphoric acid, particularly wet-process phosphoric acid, by pyrolysis of a mixture containing the raw acid and porous carbonaceous matter, including carbohydrates and chars, the... | 01/22/1985 |
| 4483838 | Treatment of contaminated phosphoric acid to recover usable acid therefrom Phosphoric acid containing organic contaminants, such as phosphoric acid recovered from a thiophenol process, is treated to recover usable acid by conducting a hot separation of the contaminated acid into acidic and organic phases, removing the organic ph... | 11/20/1984 |
| 4482527 | Process for removing nitrogen dioxide from off-gas The disclosure relates to a process for removing nitrogen dioxide from off-gas. To this end, the disclosure provides for the off-gas to be intimately contacted with a suspension consisting of red phosphorus and a liquid being inert with respect to red pho... | 11/13/1984 |
| 4481176 | Treatment for phosphorus-containing waste material The invention is directed to a process for recovering elemental phosphorus values from phosphorus-containing waste materials. The process comprises reducing the size of the solid particulate materials of the sludge and forming a uniform homogenous sludge ... | 11/06/1984 |
| 4380531 | Process for preparing phosphorus acid from industrial waste materials An improved process is provided for preparing highly purified phosphorus acid from industrial waste materials which are produced as by-products from the manufacture of sodium hypophosphite. Such industrial waste materials contain substantial quantities of... | 04/19/1983 |
| 4330515 | Preparation of phosphorous acid from industrial waste material containing phosphites A process for the preparation of phosphorous acid from phosphites contained in industrial wastes, wherein the waste material is dissolved in an aqueous solution of phosphorous acid and reacted with a strong mineral acid that will remove the cation of the ... | 05/18/1982 |
| 4309394 | Method of preparing ultraphosphoric acid Ultraphosphoric acid containing a phosphorus to hydrogen ratio of greater than 1 can be prepared by bringing together in a reaction zone elemental phosphorus and a sufficient amount of oxygen in a free-oxygen containing gas to form phosphorus pentoxide, a... | 01/05/1982 |
| 4207300 | Process for the preparation of orthophosphorous acid and phosphine The direct reaction of elemental phosphorus acid catalyzed by hydroiodic acid produces orthophosphorus acid free of orthophosphoric acid and phosphine free of diphosphine.... | 06/10/1980 |
| 4021322 | Electrolytic preparation of phosphorus acid from elemental phosphorus Elemental phosphorus is oxidized via indirect electrolytic oxidation to yield phosphorous acid, (HO)2 HPO.... | 05/03/1977 |
| 4021321 | Electrolytic preparation of phosphorous acid from elemental phosphorus Elemental phosphorus is oxidized via indirect electrolytic oxidation in an electrolysis medium containing elemental phosphorus, an aqueous solution of hydrogen halide, and a non-aqueous solvent to produce phosphorous acid, (HO)2 HPO.... | 05/03/1977 |
| 3991164 | Process for the dearsenication of polyphosphoric acid Polyphosphoric acid is dearsenicated by placing the polyphosphoric acid in a reactor; adding a phosphorus oxo-compound containing phosphorus in the monovalent or trivalent electropositive oxidation stage; heating the resulting mixture to effect disproport... | 11/09/1976 |
| 3937616 | Apparatus for the manufacture of phosphorous acid Phosphorous acid is produced from PCl3 and water in an apparatus, the essential parts of which include a reactor and an evaporator, which are connected together by means of a conduit running from the bottom of the reactor to the head of the eva... | 02/10/1976 |
