Patents by Inventor Yoji Kosaka

Yoji Kosaka 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: 10837085
    Abstract: A cold rollable beta titanium alloy is provided by the present disclosure that exhibits excellent tensile strength, and creep and oxidation resistance at elevated temperatures. In one form, the beta titanium alloy includes molybdenum between 13.0 wt. % to 20.0 wt. %, niobium between 2.0 wt. % to 4.0 wt. %, silicon between 0.1 wt. % to 0.4 wt. %, aluminum between 3.0 wt. % to 5.0 wt. %, zirconium greater than 0.0 wt. % and up to 3.0 wt. %, tin up to 5.0 wt. %, oxygen up to 0.25 wt. %, and a balance of titanium and incidental impurities. Additionally, the ranges for each element satisfies the conditions of: 6.0 wt. %?X wt. %?7.5 wt. %; and??(i) 3.5 wt. %?Y wt. %?5.15 wt. %, where??(ii) X wt. %=aluminum+tin/3+zirconium/6+10*(oxygen+nitrogen+carbon), and Y wt. %=aluminum+silicon*(zirconium+tin).
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 17, 2020
    Assignee: TITANIUM METALS CORPORATION
    Inventors: Phani Gudipati, Yoji Kosaka
  • Patent number: 10837093
    Abstract: An alpha-beta titanium alloy is provided. The alpha-beta titanium alloy composition includes concentrations of Al from about 4.7 wt. % to about 6.0 wt. %; V from about 6.5 wt. % to about 8.0 wt. %; Si from about 0.15 wt. % to about 0.6 wt. %; Fe up to about 0.3 wt. %; O from about 0.15 wt. % to about 0.23 wt. %; Ti and incidental impurities as a balance. The alpha-beta titanium alloy may have a solution treated and aged microstructure and an elongation of at least about 10% at room temperature. Also, the alpha-beta titanium alloy may have an Al/V ratio from about 0.65 to about 0.8, the Al/V ratio being equal to the concentration of the Al divided by the concentration of the V in weight percent.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: November 17, 2020
    Assignee: TITANIUM METALS CORPORATION
    Inventors: Roger Owen Thomas, Paul Garratt, Matthew Thomas, Yoji Kosaka
  • Patent number: 10837092
    Abstract: A method of making an alpha-beta titanium alloy is provided. The method includes forming a melt and solidifying the melt to form an ingot. The melt composition includes concentrations of Al from about 4.7 wt. % to about 6.0 wt. %; V from about 6.5 wt. % to about 8.0 wt. %; Si at less than 1 wt. %; Fe at up to about 0.3 wt. %; 0 at less than 1 wt. %; and a balance of Ti and incidental impurities. Furthermore, the Al/V ratio in the melt is equal to the concentration of the Al divided by the concentration of the V in weight percent is from about 0.65 to about 0.8.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: November 17, 2020
    Assignee: TITANIUM METALS CORPORATION
    Inventors: Roger Owen Thomas, Paul Garratt, Matthew Thomas, Yoji Kosaka
  • Patent number: 10731240
    Abstract: An alpha-beta titanium alloy is provided. The alpha-beta titanium alloy composition includes concentrations of Al from about 4.7 wt. % to about 6.0 wt. %; V from about 6.5 wt. % to about 8.0 wt. %; Si from about 0.15 wt. % to about 0.6 wt. %; Fe up to about 0.3 wt. %; O from about 0.15 wt. % to about 0.23 wt. %; Ti and incidental impurities as a balance. The alpha-beta titanium alloy may have a solution treated and aged microstructure and an elongation of at least about 10% at room temperature. Also, the alpha-beta titanium alloy may have an Al/V ratio from about 0.65 to about 0.8, the Al/V ratio being equal to the concentration of the Al divided by the concentration of the V in weight percent.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 4, 2020
    Assignee: TITANIUM METALS CORPORATION
    Inventors: Roger Owen Thomas, Paul Garratt, Matthew Thomas, Yoji Kosaka
  • Patent number: 10633732
    Abstract: Titanium alloys formed into a part or component used in applications where a key design criterion is the energy absorbed during deformation of the part when exposed to impact, explosive blast, and/or other forms of shock loading is described. The titanium alloys generally comprise a titanium base with added amounts of aluminum, an isomorphous beta stabilizing element such as vanadium, a eutectoid beta stabilizing element such as silicon and iron, and incidental impurities. The titanium alloys exhibit up to 70% or more improvement in ductility and up to a 16% improvement in ballistic impact resistance over a Ti-6Al-4V alloy, as well as absorbing up to 50% more energy than the Ti-6Al-4V alloy in Charpy impact tests. A method of forming a part that incorporates the titanium alloys and uses a combination of recycled materials and new materials is also described.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: April 28, 2020
    Assignee: Titanium Metals Corporation
    Inventors: Roger Owen Thomas, Yoji Kosaka, Steven James, Paul Garratt
  • Publication number: 20180340248
    Abstract: A method of making an alpha-beta titanium alloy is provided. The method includes forming a melt and solidifying the melt to form an ingot. The melt composition includes concentrations of Al from about 4.7 wt. % to about 6.0 wt. %; V from about 6.5 wt. % to about 8.0 wt. %; Si at less than 1 wt. %; Fe at up to about 0.3 wt. %; 0 at less than 1 wt. %; and a balance of Ti and incidental impurities. Furthermore, the Al/V ratio in the melt is equal to the concentration of the Al divided by the concentration of the V in weight percent is from about 0.65 to about 0.8.
    Type: Application
    Filed: August 2, 2018
    Publication date: November 29, 2018
    Applicant: Titanium Metals Corporation
    Inventors: Roger Owen Thomas, Paul Garratt, Matthew Thomas, Yoji Kosaka
  • Publication number: 20180340249
    Abstract: An alpha-beta titanium alloy is provided. The alpha-beta titanium alloy composition includes concentrations of Al from about 4.7 wt. % to about 6.0 wt. %; V from about 6.5 wt. % to about 8.0 wt. %; Si from about 0.15 wt. % to about 0.6 wt. %; Fe up to about 0.3 wt. %; O from about 0.15 wt. % to about 0.23 wt. %; Ti and incidental impurities as a balance. The alpha-beta titanium alloy may have a solution treated and aged microstructure and an elongation of at least about 10% at room temperature. Also, the alpha-beta titanium alloy may have an Al/V ratio from about 0.65 to about 0.8, the Al/V ratio being equal to the concentration of the Al divided by the concentration of the V in weight percent.
    Type: Application
    Filed: August 2, 2018
    Publication date: November 29, 2018
    Applicant: Titanium Metals Corporation
    Inventors: Roger Owen THOMAS, Paul GARRATT, Matthew THOMAS, Yoji KOSAKA
  • Publication number: 20180320251
    Abstract: A cold rollable beta titanium alloy is provided by the present disclosure that exhibits excellent tensile strength, and creep and oxidation resistance at elevated temperatures. In one form, the beta titanium alloy includes molybdenum between 13.0 wt. % to 20.0 wt. %, niobium between 2.0 wt. % to 4.0 wt. %, silicon between 0.1 wt. % to 0.4 wt. %, aluminum between 3.0 wt. % to 5.0 wt. %, zirconium greater than 0.0 wt. % and up to 3.0 wt. %, tin up to 5.0 wt. %, oxygen up to 0.25 wt. %, and a balance of titanium and incidental impurities. Additionally, the ranges for each element satisfies the conditions of: 6.0 wt. %?X wt. %?7.5 wt. %; and??(i) 3.5 wt. %?Y wt. %?5.15 wt. %, where??(ii) X wt. %=aluminum+tin/3+zirconium/6+10*(oxygen+nitrogen+carbon), and Y wt. %=aluminum+silicon*(zirconium+tin).
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Applicant: Titanium Metals Corporation
    Inventors: Phani GUDIPATI, Yoji KOSAKA
  • Publication number: 20180291492
    Abstract: Titanium alloys formed into a part or component used in applications where a key design criterion is the energy absorbed during deformation of the part when exposed to impact, explosive blast, and/or other forms of shock loading is described. The titanium alloys generally comprise a titanium base with added amounts of aluminum, an isomorphous beta stabilizing element such as vanadium, a eutectoid beta stabilizing element such as silicon and iron, and incidental impurities. The titanium alloys exhibit up to 70% or more improvement in ductility and up to a 16% improvement in ballistic impact resistance over a Ti-6Al-4V alloy, as well as absorbing up to 50% more energy than the Ti-6Al-4V alloy in Charpy impact tests. A method of forming a part that incorporates the titanium alloys and uses a combination of recycled materials and new materials is also described.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Applicant: Titanium Metals Corporation
    Inventors: Roger Owen THOMAS, Yoji KOSAKA, Steven JAMES, Paul GARRATT
  • Patent number: 10066282
    Abstract: An alpha-beta titanium alloy comprises Al at a concentration of from about 4.7 wt. % to about 6.0 wt. %; V at a concentration of from about 6.5 wt. % to about 8.0 wt. %; Si at a concentration of from about 0.15 wt. % to about 0.6 wt. %; Fe at a concentration of up to about 0.3 wt. %; O at a concentration of from about 0.15 wt. % to about 0.23 wt. %; and Ti and incidental impurities as a balance. The alpha-beta titanium alloy has an Al/V ratio of from about 0.65 to about 0.8, where the Al/V ratio is defined as the ratio of the concentration of Al to the concentration of V in the alloy, with each concentration being in weight percent (wt %).
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: September 4, 2018
    Assignee: Titanium Metals Corporation
    Inventors: Roger Thomas, Paul Garratt, Matthew Thomas, Yoji Kosaka
  • Patent number: 10041150
    Abstract: A cold rollable beta titanium alloy is provided by the present disclosure that exhibits excellent tensile strength, and creep and oxidation resistance at elevated temperatures. In one form, the beta titanium alloy includes molybdenum in an amount ranging between 13.0 wt. % to 20.0 wt. %, niobium between 2.0 wt. % to 4.0 wt. %, silicon between 0.1 wt. % to 0.4 wt. %, aluminum between 3.0 wt. % to 5.0 wt. %, at least one of: zirconium up to 3.0 wt. % and tin up to 5.0 wt. %, oxygen up to 0.25 wt. %, and a balance of titanium and incidental impurities. Additionally, the ranges for each element satisfies the conditions of: 6.0 wt. %?X wt. %?7.5 wt. %; and??(i) 3.5 wt. %?Y wt. %?5.15 wt. %, where??(ii) X wt. %=aluminum+tin/3+zirconium/6+10*(oxygen+nitrogen+carbon), and Y wt. %=aluminum+silicon*(zirconium+tin).
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: August 7, 2018
    Assignee: Titanium Metals Corporation
    Inventors: Phani Gudipati, Yoji Kosaka
  • Patent number: 10000838
    Abstract: Titanium alloys formed into a part or component used in applications where a key design criterion is the energy absorbed during deformation of the part when exposed to impact, explosive blast, and/or other forms of shock loading is described. The titanium alloys generally comprise a titanium base with added amounts of aluminum, an isomorphous beta stabilizing element such as vanadium, a eutectoid beta stabilizing element such as silicon and iron, and incidental impurities. The titanium alloys exhibit up to 70% or more improvement in ductility and up to a 16% improvement in ballistic impact resistance over a Ti-6Al-4V alloy, as well as absorbing up to 50% more energy than the Ti-6Al-4V alloy in Charpy impact tests. A method of forming a part that incorporates the titanium alloys and uses a combination of recycled materials and new materials is also described.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: June 19, 2018
    Assignee: Titanium Metals Corporation
    Inventors: Roger Thomas, Yoji Kosaka, Steven James, Paul Garratt
  • Patent number: 10000826
    Abstract: A high strength alpha-beta alloy is provided that has improved high temperature oxidation resistance, high temperature strength and creep resistance, and improved superplasticity. In one form, the alloy comprises about 4.5 wt % to about 5.5 wt % aluminum, about 3.0 wt % to about 5.0 wt % vanadium, about 0.3 wt % to about 1.8 wt % molybdenum, about 0.2 wt % to about 1.2 wt % iron, about 0.12 wt % to about 0.25 wt % oxygen, about 0.10 wt % to about 0.40 wt % silicon, with the balance titanium and incidental impurities, with each being less than about 0.1 wt % and about 0.5 wt %, respectively, in total.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: June 19, 2018
    Assignee: Titanium Metals Corporation
    Inventor: Yoji Kosaka
  • Publication number: 20170260607
    Abstract: A high strength alpha-beta alloy is provided that has improved high temperature oxidation resistance, high temperature strength and creep resistance, and improved superplasticity. In one form, the alloy comprises about 4.5 wt % to about 5.5 wt % aluminum, about 3.0 wt % to about 5.0 wt % vanadium, about 0.3 wt % to about 1.8 wt % molybdenum, about 0.2 wt % to about 1.2 wt % iron, about 0.12 wt % to about 0.25 wt % oxygen, about 0.10 wt % to about 0.40 wt % silicon, with the balance titanium and incidental impurities, with each being less than about 0.1 wt % and about 0.5 wt %, respectively, in total.
    Type: Application
    Filed: March 10, 2016
    Publication date: September 14, 2017
    Applicant: Titanium Metals Corporation
    Inventor: Yoji Kosaka
  • Publication number: 20170016103
    Abstract: Titanium alloys formed into a part or component used in applications where a key design criterion is the energy absorbed during deformation of the part when exposed to impact, explosive blast, and/or other forms of shock loading is described. The titanium alloys generally comprise a titanium base with added amounts of aluminum, an isomorphous beta stabilizing element such as vanadium, a eutectoid beta stabilizing element such as silicon and iron, and incidental impurities. The titanium alloys exhibit up to 70% or more improvement in ductility and up to a 16% improvement in ballistic impact resistance over a Ti-6Al-4V alloy, as well as absorbing up to 50% more energy than the Ti-6Al-4V alloy in Charpy impact tests. A method of forming a part that incorporates the titanium alloys and uses a combination of recycled materials and new materials is also described.
    Type: Application
    Filed: January 27, 2015
    Publication date: January 19, 2017
    Inventors: Roger Thomas, Yoji Kosaka, Steven James, Paul Garratt
  • Publication number: 20160326612
    Abstract: A cold rollable beta titanium alloy is provided by the present disclosure that exhibits excellent tensile strength, and creep and oxidation resistance at elevated temperatures. In one form, the beta titanium alloy includes molybdenum in an amount ranging between 13.0 wt. % to 20.0 wt. %, niobium between 2.0 wt. % to 4.0 wt. %, silicon between 0.1 wt. % to 0.4 wt. %, aluminum between 3.0 wt. % to 5.0 wt. %, at least one of: zirconium up to 3.0 wt. % and tin up to 5.0 wt. %, oxygen up to 0.25 wt. %, and a balance of titanium and incidental impurities. Additionally, the ranges for each element satisfies the conditions of: 6.0 wt. %?X wt. %?7.5 wt. %; and??(i) 3.5 wt. %?Y wt. %?5.15 wt. %, where??(ii) X wt. %=aluminum+tin/3+zirconium/6+10*(oxygen+nitrogen+carbon), and Y wt. %=aluminum+silicon*(zirconium+tin).
    Type: Application
    Filed: May 4, 2015
    Publication date: November 10, 2016
    Inventors: Phani Gudipati, Yoji Kosaka
  • Publication number: 20160108508
    Abstract: An alpha-beta titanium alloy comprises Al at a concentration of from about 4.7 wt. % to about 6.0 wt. %; V at a concentration of from about 6.5 wt. % to about 8.0 wt. %; Si at a concentration of from about 0.15 wt. % to about 0.6 wt. %; Fe at a concentration of up to about 0.3 wt. %; O at a concentration of from about 0.15 wt. % to about 0.23 wt. %; and Ti and incidental impurities as a balance. The alpha-beta titanium alloy has an Al/V ratio of from about 0.65 to about 0.8, where the Al/V ratio is defined as the ratio of the concentration of Al to the concentration of V in the alloy, with each concentration being in weight percent (wt %).
    Type: Application
    Filed: February 13, 2014
    Publication date: April 21, 2016
    Inventors: Roger Thomas, Paul Garratt, Matthew Thomas, Yoji Kosaka
  • Patent number: 9057121
    Abstract: Methods for the manufacture of the above-mentioned titanium alloy for use in combustion engine exhaust systems are disclosed herein. An exemplary method of the disclosed subject matter for the manufacture of titanium alloy for use in a high temperature and high stress environment includes performing a first heat treatment of the titanium alloy at a first temperature, rolling the titanium alloy to a desired thickness, performing a second heat treatment of the titanium alloy at a second temperature, and performing a third heat treatment of the titanium alloy at a third temperature. In some embodiments, the first temperature is selected such that recrystallization and softening of the titanium alloy is optimized without substantial coarsening of second phase particles and can be approximately 1500-1600° F. In some embodiments, the rolling of the titanium alloy reduces the thickness of the titanium alloy by at least than 65%.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: June 16, 2015
    Assignee: Titanium Metals Corporation
    Inventors: Yoji Kosaka, Stephen P. Fox
  • Patent number: 8551264
    Abstract: A method of manufacturing fine grain titanium alloy sheets that is suitable for superplastic forming (SPF) is disclosed. In one embodiment, a high strength titanium alloy comprising: Al: about 4.5% to about 5.5%, V: about 3.0% to about 5.0%, Mo: about 0.3% to about 1.8%, Fe: about 0.2% to about 0.8%, O: about 0.12% to about 0.25% with balance titanium is forged and hot rolled to sheet bar, which is then fast-cooled from a temperature higher than beta transus. According to this embodiment, the sheet bar is heated between about 1400° F. to about 1550° F. and rolled to intermediate gage. After reheating to a temperature from about 1400° F. to about 1550° F., hot rolling is performed in a direction perpendicular to the previous rolling direction to minimize anisotropy of mechanical properties. The sheets are then annealed at a temperature between about 1300° F. to about 1550° F. followed by grinding and pickling.
    Type: Grant
    Filed: June 17, 2012
    Date of Patent: October 8, 2013
    Assignee: Titanium Metals Corporation
    Inventors: Yoji Kosaka, Phani Gudipati
  • Patent number: 8349096
    Abstract: An oxidation resistant, high strength titanium alloy, particularly adapted for use in the manufacture of automotive exhaust system components and other applications requiring oxidation resistance and strength at elevated temperatures. The alloy comprises, in weight percent, iron less than 0.5, or 0.2 to less than 0.5%, oxygen 0.02 to less than 0.15%, silicon 0.15 to 0.6%, and balance titanium. Optional alloying elements are Al, Nb, V, Mo, Sn, Zr, Ni, Cr and Ta, with a total content of less than 1.5.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: January 8, 2013
    Assignee: Titanium Metals Corporation
    Inventors: Yoji Kosaka, Stephen P. Fox