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| Number | Title | Issue Date |
| 7265213 | Methodology of conjugating chelators to biomolecules A novel method of conjugating chelators to biomolecules such as proteins is provided. More particularly, the invention provides compositions and methods of using those compositions for the detection, purification and transport of divalent metal cation binding biomol... | 09/04/2007 |
| 7157596 | Inhibitors of serine protease activity of matriptase or MTSP1 The present invention provides compounds which inhibit serine protease activity of matriptase or MTSP1. Also provided are pharmaceutical compositions comprising those compounds and methods of using the compounds and pharmaceutical compositions to treat conditions am... | 01/02/2007 |
| 7008643 | Delivery system for biological material The present invention relates to a composition and method for delivery of biological material, especially nucleic acids into target cells and into the nucleus. ... | 03/07/2006 |
| 6913674 | Process for fractionating water-containing crude amine mixtures from amine synthesis A mixture containing one or more amines, water, low-boilers and high-boilers, is fractioned in a process wherein (i) low-boilers are separated from the mixture by distillation, (ii) high-boilers are separated from the mixture by distillatio... | 07/05/2005 |
| 6849161 | Process for the production of anhydrous hydrazine and device for its implementation The present invention relates to a process for preparing anhydrous hydrazine. The process can include distilling an unconcentrated aqueous hydrazine solution into a starting binary solution, distilling the starting binary solution at a pressure where a concentration... | 02/01/2005 |
| 6759023 | Method for making a hydrazine by hydrolysing an azine The invention relates to a process for manufacturing hydrazine by hydrolyzing an azine, in which the heat required for the reaction and the separation by distillation of the components is partly provided by injecting vaporized water. ... | 07/06/2004 |
| 6605265 | Continuous production of azines/hydrazine hydrate Azines, e.g., ketazines, are continuously produced by (i) establishing a loop having an azine reaction medium circulating therein, such loop including an azine reaction zone, means for separating azine final product from the circulating reaction medium, m... | 08/12/2003 |
| 6562311 | Method for preparing hydrazine hydrate The invention concerns a method for preparing methyl ethyl ketone azine which consists in: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in the presence of a working solution to form an azine; (b) separating the working solution and the ... | 05/13/2003 |
| 6551568 | Process for the preparation of hydrazine Process for the preparation of azine and of hydrazine by bringing ammonia, hydrogen peroxide and a reactant carrying a carbonyl group into contact with a working solution, comprising: the treatment of an aqueous stream resulting from the circuit for the r... | 04/22/2003 |
| 6528035 | Multiwall polymeric microcapsules from hydrophilic polymers Two or more hydrophilic polymers that are not soluble in each other at a particular concentration and temperature, but which have a positive spreading coefficient in solution, are used to form multi-layered polymeric microspheres. The multi-layer microsph... | 03/04/2003 |
| 6517798 | Method for preparing hydrazine hydrate The invention concerns a method for making hydrazine hydrate which consists in hydrolyzing methyl ethyl ketone azine to obtain hydrazine hydrate and methyl ethyl ketone, characterised in that it consists in purging heterocyclic compounds of the pyrazoline... | 02/11/2003 |
| 6482383 | Method for preparing hydrazine hydrate A method for preparing hydrazine hydrate comprising: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in a working solution to form an azine; (b) separating the working solution from a mixture comprising the azine, methyl ethyl ketone oxime... | 11/19/2002 |
| 5986134 | Processes for producing ketazine and hydrazine A process for continuously and stably synthesizing a ketazine from hydrogen peroxide, ammonia and methyl ethyl ketone in the presence of a solution containing a catalyst. The process comprises removing sec-butyl alcohol by distillation from methyl ethyl k... | 11/16/1999 |
| 5769925 | Process for the elution of precious metals absorbed on active carbon A powerful reducing agent such as hydrazine monohydrate is added to the standard eluent solutions such as NsOH-NaCN with or without alcohol. The kinetics of elution of gold or of silver are thus markedly enhanced.... | 06/23/1998 |
| 5744115 | Preparation process of hydrazine hydrate A preparation process of hydrazine hydrate is herein disclosed which comprises the step of hydrolyzing a ketazine in a distillation column to obtain hydrazine hydrate, a nonionic surface active agent having a polyoxyethylene group in its molecule and/or s... | 04/28/1998 |
| 5484511 | Process for the removal of impurities from hydrazine hydrate A process for the removal of organic impurities and dissolved salts from hydrazine hydrate and aqueous solutions thereof by distillation of the hydrazine hydrate under reduced pressure, passing the hydrazine hydrate vapor through an adsorbent, and condens... | 01/16/1996 |
| 5393508 | Vaporization of solutions of hydrazine hydrate Solutions of hydrazine hydrate are vaporized, without any concomitant decomposition thereof, by heating such solutions, in the liquid phase, under conditions as to effect the decompression or volatilization thereof; this process is particularly applicable... | 02/28/1995 |
| 5252309 | Azine synthesis in the absence of CO2 Azines, well suited for hydrolysis into hydrazine, are prepared in high yields by reacting ammonia, aqueous hydrogen peroxide and a carbonyl compound reactant in the presence of a catalytically effective amount of a catalyst medium therefor, i.e., an aque... | 10/12/1993 |
| 5192355 | Manufacturing and using nitrogen fertilizer solutions on a farm To make and use nitrogeneous fertilizer on a farm, nitrogen oxides are prepared in a continuous process from air or from ammonia in a reactor, with the ammonia either being transported to the farm or local site in a farming area or being prepared on the s... | 03/09/1993 |
| 5035775 | Ultrapure hydrazine production A process for producing hydrazine containing at least 98 percent by weight of N2 H4 which admixes an aqueous solution of hydrazine with an alkali metal hydroxide to form a hydrazine solution having a N2 H4 conce... | 07/30/1991 |
| 4996220 | Method of producing a clathrate compound A clathrate compound is produced if a powdery host compound which reacts with a microbicide to form the clathrate compound is added into an aqueous solution of the microbicide. If the microbicide is separated from the clathrate compound, a microbicide of ... | 02/26/1991 |
| 4973700 | Method of purifying a microbicide A clathrate compound is produced if a powdery host compound which reacts with a microbicide to form the clathrate compound is added into an aqueous solution of the microbicide. If the microbicide is separated from the clathrate compound, a microbicide of ... | 11/27/1990 |
| 4963232 | Process for producing a purified hydrazine hydrate Provided by this invention is a process for producing a purified hydrazine hydrate having a low total organic carbon concentration and which involves: a first step which includes distilling an aqueous solution of hydrazine hydrate in the presence of at le... | 10/16/1990 |
| 4961913 | Production of ultrastructural ceramics The present invention relates to high performance ceramics and methods for their production using supercritical temperatures and supercritical pressures. Furthermore, the present invention relates to high performance ceramics for use in the automobile ind... | 10/09/1990 |
| 4816243 | Preparation of vanadium III oxidic compounds, and dehydrogenation of paraffins Disclosed is making a particular inorganic crystalline vanadium III oxidic compound from a pentavalent vanadium compound and at least one other or more metal cations, which process comprises (1) reducing a pentavalent vanadium oxidic compound to the V | 03/28/1989 |
| 4804442 | Ultrapure hydrazine production Ultrapure or anhydrous hydrazine is produced in a process which comprises distilling aqueous solutions of hydrazine having at least 70 percent by weight of N2 H4 at pressures below about 20 millimeters. Aqueous solutions of hydrazine... | 02/14/1989 |
| 4737355 | Preparation of vanadium III oxidic compounds, and dehydrogenation of paraffins Disclosed is making an inorganic crystalline vanadium III oxidic compound from a pentavalent vanadium compound, which process comprises (1) reducing a pentavalent vanadium oxidic compound to substantially the VIII state by heating at 100° C. o... | 04/12/1988 |
| 4725421 | Process for the preparation of concentrated solutions of hydrazine hydrate A continuous method for the preparation of concentrated aqueous solutions of hydrazine hydrate from ketazines which are slightly soluble in water, by hydrolysis and distillation under pressure using a distillation column. The column is fed with the ketazi... | 02/16/1988 |
| 4724133 | Preparation of concentrated aqueous solution of hydrazine hydrate A continuous method for the preparation of concentrated aqueous solutions of hydrazine hydrate from concentrated aqueous solutions of acetone azine by a hydrolysis reaction and distillation under pressure in a column. The concentration of the aqueous solu... | 02/09/1988 |
| 4657751 | Process for purifying aqueous hydrazine hydrate solutions The invention concerns the purification of impure aqueous hydrazine hydrate solutions by treating the hydrazine hydrate solution by means of a solid absorbent material consisting of microporous particles whose mean granulometry is smaller than 5 mm.... | 04/14/1987 |
| 4628119 | Process for preparing hydrazine hydrohalogenide A process for preparing hydrazine hydrohalogenide is disclosed. The process comprises the steps of: (a) oxidizing benzophenone-imines with molecular oxygen in the presence of a copper halide catalyst to produce benzophenone-azines; (b) contacting the oxidation... | 12/09/1986 |
| 4547273 | Mobile atom insertion reaction, mobile atom transmissive membrane for carrying out the reaction, and reactor incorporating the mobile atom transmissive membrane Disclosed is a method of carrying out a mobile atom insertion reaction, such as a hydrogen insertion reaction, for the synthesis of reduced, hydrogenated compounds. Such reactions include the production of ammonia and hydrazine from nitrogen, formic acid ... | 10/15/1985 |
| 4532068 | Method for improving the initial activity of activated hydrazine The method for improving the initial activity of activated hydrazine is used as corrosion protection for reservoir drinking water and for the wet preservation of installation parts no longer in use. It is the object of the invention to increase the initia... | 07/30/1985 |
| 4519997 | Method for improving the initial activity of activated hydrazine The method for improving the initial activity of activated hydrazine, is used as corrosion protection for reservoir drinking water and for the wet preservation of installation parts, which are no longer being used. It is the goal of the invention to impro... | 05/28/1985 |
| 4515615 | Manufacturing and using nitrogen fertilizer solutions on a farm To make non-pressure nitrogenous fertilizer solutions, nitrogen oxides are prepared in a continuous process by burning ammonia in contact with a cobalt oxide catalyst started by an electric arc without preheating the gases. This burning forms nitrogen oxi... | 05/07/1985 |
| 4512794 | Manufacturing and using nitrogen fertilizer solutions on a farm To make non-pressure nitrogenous fertilizer solutions, nitrogen oxides are prepared in a continuous process by burning ammonia in contact with a cobalt oxide catalyst started by an electric arc without pre-heating the gases. This burning forms nitrogen ox... | 04/23/1985 |
| 4512909 | Use of a hydroquinone compound with hydrazine (1:1 molar ratio) as an oxygen-scavenging and a corrosion-inhibiting agent Disclosed is an improved oxygen-scavenging and corrosion-inhibiting agent for fluidic systems comprising a hydroquinone compound with hydrazine (1:1 molar ratio). Also disclosed are methods for using this agent.... | 04/23/1985 |
| 4508695 | Process for preparing hydrazines Anhydrous hydrazine and hydrocarbyl-substituted hydrazines are efficiently prepared according to a three-step procedure, comprising a first step wherein ammonia, a primary or secondary amine, an alkali metal amide, an alkaline earth metal amide, a hydroca... | 04/02/1985 |
| 4321163 | Lithium nitride of increased conductivity, method for its preparation, and its use Crystalline lithium nitride of increased conductivity having a hydrogen content of 0.2 to about 8 mole percent, a sodium, potassium and calcium content each of less than 10-2 weight percent and a silicon and iron content each between 10-2 | 03/23/1982 |
| 4286108 | Process for preparing hydrazines A process is disclosed for preparing anhydrous hydrazines by reacting a tertiary hydrazinium halide with a corresponding alkali metal or alkaline earth metal amide in the presence of a non-aqueous inert carrier.... | 08/25/1981 |
