Patents by Inventor Douglas Alan Ruth, II

Douglas Alan Ruth, II 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).

  • Battery case employing ring sandwich
    Patent number: 7175938
    Abstract: The invention includes a brazed ceramic ring that separates the positive and negative ends of the battery while still providing a leak-tight seal. The ceramic is aluminum oxide or zirconium oxide or zirconium oxide with 3% yttrium. The invention includes a brazing material, which is grater than 50% gold. The invention includes a titanium alloy case (Ti-6Al-4V) which is titanium with 6% aluminum and 4% vanadium as its major alloying elements. The case has the desirable properties of titanium such as high strength for a relatively low weight; and the case has the requisite ability and electro-activity to be used as a positive current carrying element where the battery's positive electrode exhibits more then 3.5 V vs. Li/Li+.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: February 13, 2007
    Assignee: Quallion LLC
    Inventors: Douglas Alan Ruth, II, Hisashi Tsukamoto, Clay Kishiyama, Andrew Szyszkowski
  • Brazed ceramic seal for batteries
    Patent number: 7166388
    Abstract: This invention is a sealed battery case and a method for making it, including a brazed ceramic ring that separates the positive and negative ends of the battery while providing a leak-tight seal. A brazing material is used that comprises greater than 50% gold. The case is strong, and can be negative, neutral, or positive, withstanding more than 3.5 V vs. Li/Li+.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: January 23, 2007
    Assignee: Quallion LLC
    Inventors: Hisashi Tsukamoto, Clay Kishiyama, Andrew Szyszkowski, Douglas Alan Ruth, II
  • Brazed ceramic seal for batteries with titanium-titanium-6A1-4V cases
    Patent number: 6607843
    Abstract: The invention includes a brazed ceramic ring that separates the positive and negative ends of the battery while still providing a leak-tight seal. The ceramic is aluminum oxide or zirconium oxide or zirconium oxide with 3% yttrium. The invention includes a brazing material that is greater than 50% gold. The invention includes a titanium alloy case (Ti-6Al-4V) which is titanium with 6% aluminum and 4% vanadium as its major alloying elements. The case has the desirable properties of titanium such as high strength for a relatively low weight; and the case has the requisite ability and electro-activity to be used as a positive current carrying element where the battery's positive electrode exhibits more than 3.5 V vs. Li/Li+.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: August 19, 2003
    Assignee: Quallion LLC
    Inventors: Douglas Alan Ruth, II, Hisashi Tsukamoto, Clay Kishiyama, Andrew Szyszkowski