Utilizing Free Nitrogen As Reactant Patents (Class 423/380)
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Patent number: 11286570Abstract: A coated cutting tool includes a substrate and a coating. The coating has an inner layer of 4-14 ?m thick Ti1-xAlxN, an intermediate layer of 0.05-1 ?m TiCN and at least one outer layer of 1-9 ?m ?-Al2O3. The ?-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuK? radiation and theta-2theta scan. A texture coefficient TC(hkl) is defined according to Harris formula, wherein the (hkl) reflections used are (0 2 4), (1 1 6), (3 0 0) and (0 0 12), I(hkl)=measured intensity (peak intensity) of the (hkl) reflection, I0(hkl)=standard intensity according to ICDD's PDF-card No. 00-042-1468, n=number of reflections used in the calculation, and 3<TC(0 0 12)<4.Type: GrantFiled: January 26, 2018Date of Patent: March 29, 2022Assignee: WALTER AGInventors: Dirk Stiens, Thorsten Manns
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Patent number: 11225412Abstract: A titanium carbonitride powder for use as a starting material for a hard material satisfies a D50 of from 2.0 ?m to 6.0 ?m and a D10/D90 of from 0.20 to 0.50, wherein D50 is a particle size at a cumulative percentage of 50% of a particle size distribution by volume, D10 is a particle size at a cumulative percentage of 10% of the particle size distribution by volume, and D90 is a particle size at a cumulative percentage of 90% of the particle size distribution by volume.Type: GrantFiled: July 31, 2017Date of Patent: January 18, 2022Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kosuke Fukae, Masato Michiuchi, Keiichi Tsuda
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Patent number: 10954166Abstract: A ceramic powder containing at least one of a nitride and a carbonitride of a metal element as a major component, the metal element being one or more elements selected from the group consisting of a group 4 element, a group 5 element and a group 6 element, the ceramic powder having particles having an average particle size of 5 ?m or less, and an oxygen content of 0.3% by mass or less.Type: GrantFiled: March 8, 2019Date of Patent: March 23, 2021Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Harada, Satoru Kukino
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Patent number: 9981856Abstract: Disclosed herein is a method for preparing ultrafine titanium carbonitride powder under a relatively low temperature condition that obviates a grinding process. This method includes the steps of: a mixing step for contacting titanium dioxide (TiO2), calcium (Ca) and carbon (C) under an inert atmosphere, a synthesis step for reacting the resultant mixture by heating at a temperature of about 600-1500° C. or lower under a nitrogen atmosphere; and a washing step for removing calcium oxide by washing this mixture.Type: GrantFiled: April 2, 2015Date of Patent: May 29, 2018Assignee: NANO TECH Co., Ltd.Inventors: Hyun Ho Lee, Ki Hong Kim, Su Jeong Shin, Sang Myun Kim
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Patent number: 8216359Abstract: The invention features delayed-setting calcium phosphate pastes which are useful for the preparation of delivery vehicles for biologically active agents, useful for the treatment of orthopedic conditions and can be stored for long periods without prematurely setting.Type: GrantFiled: April 14, 2005Date of Patent: July 10, 2012Assignee: ETEX CorporationInventors: Dosuk D. Lee, Youngmi M. Lee, legal representative, Aron D. Rosenberg, Laurent D. Gilles De Pelichy, Manish Sutaria, Aliassghar N. Tofighi
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Patent number: 5756410Abstract: A submicrometer transition metal carbonitride is produced having the formula:M.sub.a M'.sub.b M".sub.(1-a-b) (C.sub.1-x) N.sub.x).sub.zwherein M is Ti, Zr or Hf; M' is V, Nb or Ta; M" is Cr, Mo or W; a ranges from 0 to 1; b ranges from 0 to 1 with the proviso that (a +b) is less than or equal to 1; x ranges from about 0.02 to about 0.95 and z ranges from about 0.9 to about 2. The transition metal carbonitride is produced by mixing (a) a transition metal oxide source of a transition metal in the above formula and (b) a carbon source such as carbon black.Type: GrantFiled: February 27, 1997Date of Patent: May 26, 1998Assignee: The Dow Chemical CompanyInventors: Stephen D. Dunmead, Alan W. Weimer
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Patent number: 5597543Abstract: A spherical powder selected from the group consisting of titanium nitride, titanium carbonitride, titanium nitride containing a metal of the IVa, Va and VIa group of the periodic table, and titanium carbonitride containing a metal of the IVa, Va and VIa group of the periodic table, having an average grain size of more than 2 .mu.m and a narrow grain spectrum, is prepared by introducing into a reaction vessel a mixture of at least one substance selected from the group consisting of titanium metal, a metal of the IVa, Va and VIa group of the periodic table, and an oxide, carbide, nitride and carbonitride of said metals, and a carbon-containing substance, establishing a nitrogen atmosphere in the reaction vessel, heating the mixture in the reaction vessel to a temperature between 800.degree. C. and 2400.degree. C. and maintaining the temperature between 1400.degree. C. and 2000.degree. C.Type: GrantFiled: July 17, 1995Date of Patent: January 28, 1997Assignee: Treibacher Industrie AGInventor: Hans Zeiringer
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Patent number: 5417952Abstract: A process for synthesizing titanium carbide, titanium nitride or titanium carbonitride. The process comprises placing particles of titanium, a titanium salt or titanium dioxide within a vessel and providing a carbon-containing atmosphere within the vessel. The vessel is heated to a pyrolysis temperature sufficient to pyrolyze the carbon to thereby coat the particles with a carbon coating. Thereafter, the carbon-coated particles are heated in an inert atmosphere to produce titanium carbide, or in a nitrogen atmosphere to produce titanium nitride or titanium carbonitride, with the heating being of a temperature and time sufficient to produce a substantially complete solid solution.Type: GrantFiled: May 27, 1994Date of Patent: May 23, 1995Assignee: Midwest Research InstituteInventors: Rasit Koc, Gregory C. Glatzmaier
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Patent number: 5250278Abstract: A method of producing a composite ceramic powder is provided herein. A precursor product powder is first produced in a reactor from at least one carbide-forming reactant by heating the reactant(s) by means of combustion of a fuel, and the precursor product powder as collected from the reactor is heated in a nitrogen-containing atmosphere to produce a final product comprising a carbide compound as well as a nitride compound.Type: GrantFiled: June 19, 1991Date of Patent: October 5, 1993Assignee: Phillips Petroleum CompanyInventors: George F. Schuette, Bruce W. Gerhold
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Patent number: 4705635Abstract: A process for the enrichment and separation of oxides of heavy hydrogen isotopes from acid, aqueous solutions or other aqueous streams employs macrocyclic aminopolyether (APE) and organic cation exchange agents. The aqueous solution or the aqueous stream is mixed with at least one organic solvent which is miscible with water to form a liquid mixture. An organic acid cation exchange agent in the H-form is charged with a protonized APE to form a solid phase. The liquid mixture is brought into contact with the solid phase to bring about the enrichment of the heavy hydrogen isotope on the solid phase at a low temperature. The heavy hydrogen isotope from the solid phase is then released at a temperature that is higher by between 30.degree. K. and 150.degree. K. than the temperature at which the enrichment occurred.Type: GrantFiled: March 10, 1986Date of Patent: November 10, 1987Assignee: Kernforschungszentrum Karlsruhe GmbHInventors: Arndt Knochel, Burghard Doscher, Wolfgang Podesta
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Patent number: 4495054Abstract: A blast furnace is employed to process a natural material selected from the group consisting of oil shale, oil sandstone, asphalt rock or mixtures thereof. A first carbonaceous material selected from the group consisting of oil shale, oil sandstone, asphalt rock or mixtures thereof and a second carbonaceous material are charged to the top of a blast furnace and the carbonaceous char material remaining when the burden reaches the lower portion of the blast furnace in front of the primary tuyeres is burned to provide a hot, upwardly-moving gas stream containing CO and H.sub.2 to vaporize recoverable hydrocarbons contained in the carbonaceous material as the carbonaceous material moves downwardly through the blast furnace. A gas containing hydrocarbons, CO, H.sub.2 and vaporized carbonaceous oil and tar is withdrawn from near the top of the blast furnace and a molten slag is withdrawn from near the bottom of the blast furnace.Type: GrantFiled: August 11, 1980Date of Patent: January 22, 1985Inventor: H. Bruce Claflin
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Patent number: 4247529Abstract: Titanium carbonitride of a high purity and in a fine powder form can be produced by maintaining a mixture of titanium halide and carbon at a temperature of from 700.degree. C. to 1,800.degree. C. in the presence of a reducing substance, such as aluminum or an aluminum-titanium alloy, in a nitrogen-containing gaseous atmosphere.Type: GrantFiled: March 13, 1979Date of Patent: January 27, 1981Assignee: Toyo Soda Manufacturing Co., Ltd.Inventors: Tadaaki Mori, Takaaki Tsukidate, Junji Arika