Patents by Inventor Jiinjen A. Sue
Jiinjen A. Sue 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: 9382596Abstract: A hardfacing composition composed of an Fe—Cr alloy. The alloy is comprised of 80 wt % iron, about 2 wt % to about 20 wt % Cr, less than 1 wt % Si and less than 1 wt % C. The alloy's microstructure is at least 80 vol % martensite; and less than 20 vol % austenite.Type: GrantFiled: September 16, 2011Date of Patent: July 5, 2016Assignee: National Oilwell Varco, L.P.Inventors: Raju Pillai, Jiinjen A. Sue, Parul W. Dhall
-
Patent number: 8944789Abstract: A progressive cavity type motor or pump including a stator insert with a reinforcing agent dispersed in a manner to improve properties of the stator insert. The reinforcing agent may be a fiber, nanotube, metal, ceramic, or polymer. A dispersing agent may be used to obtain a homogenous distribution. A magnetic reinforcing agent may be incorporated into a stator insert. The stator insert is subjected to a magnetic field to orient the magnetic reinforcing agent in a particular orientation. The magnetic field may also reposition the magnetic reinforcing agent within the stator insert. The stator insert may be formed by injection molding, transfer, or compression molding among other methods.Type: GrantFiled: August 22, 2011Date of Patent: February 3, 2015Assignee: National Oilwell Varco, L.P.Inventors: Stefan Butuc, Jiinjen A. Sue, Harold A. Sreshta, Joshua A. Sicilian
-
Publication number: 20130068449Abstract: A hardfacing composition composed of an Fe—Cr alloy. The alloy is comprised of 80 wt % iron, about 2 wt % to about 20 wt % Cr, less than 1 wt % Si and less than 1 wt % C. The alloy's microstructure is at least 80 vol % martensite; and less than 20 vol % austenite.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: NATIONAL OILWELL VARCO,LP.Inventors: Raju PILLAI, Jiinjen A. SUE, Parul W. DHALL
-
Publication number: 20120148432Abstract: A progressive cavity type motor or pump including a stator insert with a reinforcing agent dispersed in a manner to improve properties of the stator insert. The reinforcing agent may be a fiber, nanotube, metal, ceramic, or polymer. A dispersing agent may be used to obtain a homogenous distribution. A magnetic reinforcing agent may be incorporated into a stator insert. The stator insert is subjected to a magnetic field to orient the magnetic reinforcing agent in a particular orientation. The magnetic field may also reposition the magnetic reinforcing agent within the stator insert. The stator insert may be formed by injection molding, transfer, or compression molding among other methods.Type: ApplicationFiled: August 22, 2011Publication date: June 14, 2012Applicant: NATIONAL OILWELL VARCO, L.P.Inventors: Stefan BUTUC, Jiinjen A. SUE, Harold A. SRESHTA, Joshua A. SICILIAN
-
Publication number: 20070089913Abstract: The present invention is directed to a drill bit with non-cutting erosion resistant inserts. In one illustrative embodiment, the apparatus comprises a matrix drill bit body comprising a plurality of blades, a plurality of cutting elements positioned on each of the blades, the cutting elements defining a plurality of web regions, and a plurality of spaced apart, non-cutting erosion resistant inserts positioned along a face of at least one of the blades, at least a portion of each of the non-cutting erosion resistant inserts being positioned in front of one of the web regions.Type: ApplicationFiled: October 21, 2005Publication date: April 26, 2007Applicant: REEDHYCALOG LPInventors: Neerali Desai, Jiinjen Sue
-
Patent number: 5290362Abstract: An aqueous stripping solution and method for selectively removing a titanium compound from a base metal. The aqueous solution contains a source of hydrogen peroxide, an alkali source of hydroxyl ions and an acid with the components in a concentration such that the pH of the solution is above 8.Type: GrantFiled: December 28, 1992Date of Patent: March 1, 1994Assignee: Praxair S.T. Technology, Inc.Inventor: Jiinjen A. Sue
-
Patent number: 5242753Abstract: A wear and erosion resistant coating for substrates which comprises a substoichiometric zirconium nitride coating having a nitrogen content in the zirconium nitride coating from 41 to 48 atomic weight percent.Type: GrantFiled: July 11, 1991Date of Patent: September 7, 1993Assignee: Praxair S.T. Technology, Inc.Inventors: Jiinjen A. Sue, Harden H. Troue
-
Patent number: 5232619Abstract: An aqueous stripping solution and method for selectively removing a titanium compound from a base metal. The aqueous solution contains a source of hydrogen peroxide, an alkali source of hydroxyl ions and an acid with the components in a concentration such that the pH of the solution is above 8.Type: GrantFiled: May 28, 1992Date of Patent: August 3, 1993Assignee: Praxair S.T. Technology, Inc.Inventor: Jiinjen A. Sue
-
Patent number: 5185211Abstract: A wear and erosion resistant coating for substrates having a non-nitrogen titanium-containing outer surface onto which a non-stoichiometric titanium nitride coating is deposited in which the nitrogen content in the titanium nitride coating is from 32.5 to 47 atomic weight percent.Type: GrantFiled: July 11, 1991Date of Patent: February 9, 1993Assignee: Praxair S.T. Technology, Inc.Inventors: Jiinjen A. Sue, Harden H. Troue
-
Patent number: 5071693Abstract: The invention relates to a multilayer coating of at least 2 layers of a nitride-containing compound, such as titanium nitride, in which at least one layer contains at least 2 atomic percent of nitrogen different than the nitrogen contained in an adjacent layer. The invention also relates to a method for producing the multilayer coating.Type: GrantFiled: April 18, 1991Date of Patent: December 10, 1991Assignee: Union Carbide Coatings Service Technology CorporationInventors: Jiinjen A. Sue, Harden H. Troue
-
Patent number: 5062941Abstract: An electrolytic process for stripping a group IVB or VIB metal coating compound from a titanium based metal substrate using an aqueous electrolyte comprising an oxidizing reagent and an acid with a solution pH of less than 4.5.Type: GrantFiled: October 22, 1990Date of Patent: November 5, 1991Assignee: Union Carbide Coatings Service Technology CorporationInventor: Jiinjen A. Sue
-
Patent number: 4975621Abstract: A coated article suitable for use in a vacuum consisting essentially of a refractory metal substrate and a first coating of TiB.sub.2 and Mo. An overcoat of TiB.sub.2 may be applied to the first coating as a second layer upon which additional layers may be applied if desired.Type: GrantFiled: June 26, 1989Date of Patent: December 4, 1990Assignee: Union Carbide CorporationInventors: Harold H. Fukubayashi, Jiinjen A. Sue, Robert C. Tucer, Jr., Ronnie J. Doan
-
Patent number: 4929322Abstract: A process and apparatus for coating a substrate with source material from a solid cathode in a vacuum chamber supplied with a reactive or inert gas at low pressure. An electric arc is generated between an evaporable end surface of the cathode and an anode. An elongated member surrounds the cathode and extends a predetermined minimum distance "X" beyond the evaporable end surface of the cathode to form a cathode chamber. The inert or reactive gas is directed to flow into the cathode chamber before entering the vacuum chamber.Type: GrantFiled: June 8, 1989Date of Patent: May 29, 1990Assignee: Union Carbide CorporationInventors: Jiinjen A. Sue, Harden H. Troue
-
Patent number: 4895765Abstract: The present invention is directed to polycrystalline titanium nitride and zirconium nitride coating compositions and coated articles with a I(111)/I(200) x-ray diffraction intensity ratio of at least about 75 for the titanium nitride composition and at least about 15 for the zirconium nitride composition and to a method of forming a highly oriented polycrystalline titanium nitride or zirconium nitride coating composition with a high I(111)/I(200) x-ray diffraction intensity ratio. This invention also concerns polycrystalline titanium nitride and zirconium nitride coating compositions and coated articles of the type described with an interplanar spacing, d.sub.111, of 2.460 Angstroms or less for TiN and an interplanar spacing, d.sub.111, of 2.660 Angstroms or less for ZrN and to methods for producing same. The composition is deposited upon a substrate in an evacuated chamber from a titanium or zirconium cathode source surrounded by an elongated member which overhangs the cathode to form a cathode chamber.Type: GrantFiled: September 10, 1986Date of Patent: January 23, 1990Assignee: Union Carbide CorporationInventors: Jiinjen A. Sue, Harden H. Troue
-
Patent number: 4839245Abstract: An erosion resistant article such as a turbine blade having, in use, a surface subject to high angle impingement and a surface subject to low angle impingement, said article comprising a substrate defining said surfaces composed of a refractory metal, titanium alloy, refractory alloy, aluminum alloy, superalloy based on Fe, Co or Ni, stainless steel or ceramic composite, and an erosion-resistant coating of zirconium nitride having an averge grain size of not greater than about 3000 Angstroms applied by physical vapor deposition to said surfaces, said zirconium nitride coating preferably having a ratio of the erosion rate at an impingement angle of 90.degree. to the erosion rate at an impingement angle of 20.degree. of not greater than about 1.5 and having an erosion rate at all impingement angles from 20.degree. to 90.degree. at least about two times less than that of said substrate at the same impingement angles.Type: GrantFiled: February 22, 1988Date of Patent: June 13, 1989Assignee: Union Carbide CorporationInventors: Jiinjen A. Sue, Harden H. Troue