Patents by Inventor Rong-Chein Richard Wu

Rong-Chein Richard Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9926623
    Abstract: In various embodiments, sputtering targets are formed by introducing molybdenum powder into a sheet bar mold, pressing the powder to form a sheet bar, sintering the sheet bar to form an ingot having a density of at least 90% of a theoretical density, preheating the ingot, rolling the ingot to form a plate, and heat treating the plate.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: March 27, 2018
    Assignee: H.C. STARCK INC.
    Inventors: Brad Lemon, Joseph Hirt, Timothy Welling, James G. Daily, III, David Meendering, Gary Rozak, Jerome O'Grady, Prabhat Kumar, Steven A. Miller, Rong-chein Richard Wu, David G. Schwartz
  • Publication number: 20160186311
    Abstract: In various embodiments, sputtering targets are formed by introducing molybdenum powder into a sheet bar mold, pressing the powder to form a sheet bar, sintering the sheet bar to form an ingot having a density of at least 90% of a theoretical density, preheating the ingot, rolling the ingot to form a plate, and heat treating the plate.
    Type: Application
    Filed: March 4, 2016
    Publication date: June 30, 2016
    Inventors: Brad Lemon, Joseph Hirt, Timothy Welling, James G. Daily, III, David Meendering, Gary Rozak, Jerome O'Grady, Prabhat Kumar, Steven A. Miller, Rong-chein Richard Wu, David G. Schwartz
  • Patent number: 9309591
    Abstract: In various embodiments, tubular sputtering targets comprising molybdenum are provided and sputtered to produce thin films comprising molybdenum. The sputtering targets may be formed by forming a tubular billet having an inner diameter IDI and an outer diameter ODI, the formation comprising pressing molybdenum powder in a mold and sintering the pressed molybdenum powder, working the tubular billet to form a worked billet having an outer diameter ODf smaller than ODI, and heat treating the worked billet. The sputtering targets may have a substantially uniform texture of (a) a 110 orientation parallel to a longitudinal direction and (b) a 111 orientation parallel to a radial direction.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: April 12, 2016
    Assignee: H.C. Starck, Inc.
    Inventors: Brad Lemon, Joseph Hirt, Timothy Welling, James G. Daily, III, David Meendering, Gary Rozak, Jerome O'Grady, Prabhat Kumar, Steven A. Miller, Rong-chein Richard Wu, David G. Schwartz
  • Publication number: 20150136584
    Abstract: In various embodiments, tubular sputtering targets comprising molybdenum are provided and sputtered to produce thin films comprising molybdenum. The sputtering targets may be formed by forming a tubular billet having an inner diameter IDI and an outer diameter ODI, the formation comprising pressing molybdenum powder in a mold and sintering the pressed molybdenum powder, working the tubular billet to form a worked billet having an outer diameter ODf smaller than ODI, and heat treating the worked billet. The sputtering targets may have a substantially uniform texture of (a) a 110 orientation parallel to a longitudinal direction and (b) a 111 orientation parallel to a radial direction.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 21, 2015
    Inventors: Brad Lemon, Joseph Hirt, Timothy Welling, James G. Daily, III, David Meendering, Gary Rozak, Jerome O'Grady, Prabhat Kumar, Steven A. Miller, Rong-chein Richard Wu, David G. Schwartz
  • Patent number: 9017600
    Abstract: In various embodiments, planar sputtering targets are produced by forming a billet at least by pressing molybdenum powder in a mold and sintering the pressed powder, working the billet to form a worked billet, heat treating the worked billet, working the worked billet to form a final billet, and heat treating the final billet.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: April 28, 2015
    Assignee: H.C. Starck Inc.
    Inventors: Brad Lemon, Joseph Hirt, Timothy Welling, James G. Daily, III, David Meendering, Gary Rozak, Jerome O'Grady, Prabhat Kumar, Steven A. Miller, Rong-chein Richard Wu, David G. Schwartz
  • Patent number: 8911528
    Abstract: Molybdenum titanium sputter targets are provided. In one aspect, the targets are substantially free of the ?(Ti, Mo) alloy phase. In another aspect, the targets are substantially comprised of single phase ?(Ti, Mo) alloy. In both aspects, particulate emission during sputtering is reduced. Methods of preparing the targets, methods of bonding targets together to produce large area sputter targets, and films produced by the targets, are also provided.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: December 16, 2014
    Assignee: H.C. Starck Inc.
    Inventors: Mark E. Gaydos, Prabhat Kumar, Steve Miller, Norman C. Mills, Gary Rozak, Rong-Chein Richard Wu
  • Patent number: 8883250
    Abstract: In various embodiments, a sputtering target initially formed by ingot metallurgy or powder metallurgy and comprising a sputtering-target material is provided, the sputtering-target material (i) comprising a metal, (ii) defining a recessed furrow therein, and (iii) having a first grain size and a first crystalline microstructure. A powder is spray-deposited within the furrow to form a layer therein, the layer (i) comprising the metal, (ii) having a second grain size finer than the first grain size, and (iii) having a second crystalline microstructure more random than the first crystalline microstructure. Spray-depositing the powder within the furrow forms a distinct boundary line between the layer and the sputtering-target material.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: November 11, 2014
    Assignees: H.C. Starck Inc., H.C. Starck GmbH
    Inventors: Steven A. Miller, Prabhat Kumar, Rong-chein Richard Wu, Shuwei Sun, Stefan Zimmermann, Olaf Schmidt-Park
  • Publication number: 20140299466
    Abstract: The present invention is directed to a process for producing high density, refractory metal products via a press/sintering process. The invention is also directed to a process for producing a sputtering target and to the sputtering target so produced.
    Type: Application
    Filed: May 5, 2014
    Publication date: October 9, 2014
    Inventors: Prabhat Kumar, Charles Wood, Gary Rozak, Steven A. Miller, Glen Zeman, Rong-Chein Richard Wu
  • Patent number: 8784729
    Abstract: The present invention is directed to a process for producing high density, refractory metal products via a press/sintering process. The invention is also directed to a process for producing a sputtering target and to the sputtering target so produced.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: July 22, 2014
    Assignee: H.C. Starck Inc.
    Inventors: Prabhat Kumar, Charles Wood, Gary Rozak, Steven A. Miller, Glen Zeman, Rong-Chein Richard Wu
  • Publication number: 20130224059
    Abstract: In various embodiments, planar sputtering targets are produced by forming a billet at least by pressing molybdenum powder in a mold and sintering the pressed powder, working the billet to form a worked billet, heat treating the worked billet, working the worked billet to form a final billet, and heat treating the final billet.
    Type: Application
    Filed: March 25, 2013
    Publication date: August 29, 2013
    Inventors: Brad Lemon, Joseph Hirt, Timothy Welling, James G. Daily, III, David Meendering, Gary Rozak, Jerome O'Grady, Peter R. Jepson, Prabhat Kumar, Steven A. Miller, Rong-chein Richard Wu, David G. Schwarz
  • Patent number: 8226741
    Abstract: The present invention is directed to a process for the preparation of a metal powder having a purity at least as high as the starting powder and having an oxygen content of 10 ppm or less comprising heating said metal powder containing oxygen in the form of an oxide, with the total oxygen content being from 50 to 3000 ppmf in an inert atmosphere at a pressure of from 1 bar to 10?7 to a temperature at which the oxide of the metal powder becomes thermodynamically unstable and removing the resulting oxygen via volatilization. The metal powder is preferably selected from the group consisting of tantalum, niobium, molybdenum, hafnium, zirconium, titanium, vanadium, rhenium and tungsten. The invention also relates to the powders produced by the process and the use of such powders in a cold spray process.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: July 24, 2012
    Assignee: H.C. Starck, Inc.
    Inventors: Leonid N. Shekhter, Steven A. Miller, Leah F. Haywiser, Rong-Chein Richard Wu
  • Publication number: 20110097236
    Abstract: Molybdenum titanium sputter targets are provided. In one aspect, the targets are substantially free of the ?(Ti, Mo) alloy phase. In another aspect, the targets are substantially comprised of single phase ?(Ti, Mo) alloy. In both aspects, particulate emission during sputtering is reduced. Methods of preparing the targets, methods of bonding targets together to produce large area sputter targets, and films produced by the targets, are also provided.
    Type: Application
    Filed: November 2, 2010
    Publication date: April 28, 2011
    Applicant: H. C. Starck Inc.
    Inventors: Mark E. Gaydos, Prabhat Kumar, Steve Miller, Norman C. Mills, Gary Rozak, Rong-Chein Richard Wu
  • Patent number: 7837929
    Abstract: Molybdenum titanium sputter targets are provided. In one aspect, the targets are substantially free of the ?(Ti, Mo) alloy phase. In another aspect, the targets are substantially comprised of single phase ?(Ti, Mo) alloy. In both aspects, particulate emission during sputtering is reduced. Methods of preparing the targets, methods of bonding targets together to produce large area sputter targets, and films produced by the targets, are also provided.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: November 23, 2010
    Assignee: H.C. Starck Inc.
    Inventors: Mark Gaydos, Prabhat Kumar, Steven A. Miller, Norman C. Mills, Gary Rozak, Rong-Chein Richard Wu
  • Publication number: 20100272889
    Abstract: The present invention is directed to a process for the preparation of a metal powder having a purity at least as high as the starting powder and having an oxygen content of 10 ppm or less comprising heating said metal powder containing oxygen in the form of an oxide, with the total oxygen content being from 50 to 3000 ppmf in an inert atmosphere at a pressure of from 1 bar to 10?7 to a temperature at which the oxide of the metal powder becomes thermodynamically unstable and removing the resulting oxygen via volatilization. The metal powder is preferably selected from the group consisting of tantalum, niobium, molybdenum, hafnium, zirconium, titanium, vanadium, rhenium and tungsten. The invention also relates to the powders produced by the process and the use of such powders in a cold spray process.
    Type: Application
    Filed: October 3, 2007
    Publication date: October 28, 2010
    Applicant: H.C. Starch Inc.
    Inventors: Leonid N. Shekhter, Steven A. Miller, Leah F. Haywiser, Rong-Chein Richard Wu
  • Publication number: 20090065747
    Abstract: The present invention is directed to a composition consisting essentially of: a) from about 60 to about 99 mole % of SnO2, and b) from about 1 to about 40 mole % of one or more materials selected from the group consisting of i) Nb2O5, ii) NbO, iii) NbO2, iv) WO2, v) a material selected consisting of a) a mixture of MoO2 and Mo and b) Mo, vi) W, vii) Ta2O5, and viii) mixtures thereof, wherein the mole %s are based on the total product and wherein the sum of components a) and b) is 100. The invention is also directed to the sintered product of such composition, a sputtering target made from the sintered product and a transparent electroconductive film made from the composition.
    Type: Application
    Filed: November 11, 2008
    Publication date: March 12, 2009
    Applicant: H.C. Stack Inc.
    Inventors: Prabhat Kumar, Rong-Chein Richard Wu, Shuwei Sun
  • Publication number: 20080314737
    Abstract: Molybdenum titanium sputter targets are provided. In one aspect, the targets are substantially free of the ?(Ti, Mo) alloy phase. In another aspect, the targets are substantially comprised of single phase ?(Ti, Mo) alloy. In both aspects, particulate emission during sputtering is reduced. Methods of preparing the targets, methods of bonding targets together to produce large area sputter targets, and films produced by the targets, are also provided.
    Type: Application
    Filed: October 16, 2006
    Publication date: December 25, 2008
    Inventors: Mark Gaydos, Prabhat Kumar, Steven A. Miller, Norman G. Mills, Gary Rozak, John Shields, Rong-Chein Richard Wu
  • Patent number: 7452488
    Abstract: The present invention is directed to a composition consisting essentially of: a) from about 60 to about 99 mole % of SnO2, and b) from about 1 to about 40 mole % of one or more materials selected from the group consisting of i) Nb2O5, ii) NbO, iii) NbO2, iv) WO2, v) a material selected consisting of a) a mixture of MoO2 and Mo and b) Mo, vi) W, vii) Ta2O5, and viii) mixtures thereof, wherein the mole % s are based on the total product and wherein the sum of components a) and b) is 100. The invention is also directed to the sintered product of such composition, a sputtering target made from the sintered product and a transparent electroconductive film made from the composition.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: November 18, 2008
    Assignee: H.C. Starck Inc.
    Inventors: Prabhat Kumar, Rong-Chein Richard Wu, Shuwei Sun
  • Patent number: 7416789
    Abstract: A substrate for semiconductor and integrated circuit components including: a core plate containing a Group VIB metal from the periodic table of the elements and/or an anisotropic material, having a first major surface and a second major surface and a plurality of openings extending, at least partially, from the first major surface to the second major surface; and a Group IB metal from the periodic table of the elements or other high thermally conductive material filling at least a portion of the space encompassed by at least some of the openings; and optionally, a layer containing a Group IB metal from the periodic table or other high thermally conductive material disposed over at least a portion of the first major surface and at least a portion of the second major surface. The substrate can be used in electronic devices, which can also include one or more semiconductor components.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: August 26, 2008
    Assignee: H.C. Starck Inc.
    Inventors: Henry F. Breit, Rong-Chein Richard Wu, Prabhat Kumar
  • Publication number: 20080171215
    Abstract: The present invention is directed to a process for producing high density, refractory metal products via a press/sintering process. The invention is also directed to a process for producing a sputtering target and to the sputtering target so produced.
    Type: Application
    Filed: January 16, 2007
    Publication date: July 17, 2008
    Inventors: Prabhat Kumar, Charles Wood, Gary Rozak, Steven A. Miller, Glen Zeman, Rong-Chein Richard Wu
  • Publication number: 20080099731
    Abstract: The present invention is directed to a composition consisting essentially of: a) from about 60 to about 99 mole % of SnO2, and b) from about 1 to about 40 mole % of one or more materials selected from the group consisting of i) Nb2O5, ii) NbO, iii) NbO2, iv) WO2, v) a material selected consisting of a) a mixture of MoO2 and Mo and b) Mo, vi) W, vii) Ta2O5, and viii) mixtures thereof, wherein the mole % s are based on the total product and wherein the sum of components a) and b) is 100. The invention is also directed to the sintered product of such composition, a sputtering target made from the sintered product and a transparent electroconductive film made from the composition.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Prabhat Kumar, Rong-Chein Richard Wu, Shuwei Sun