Patents by Inventor Randall D. Watkins

Randall D. Watkins 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).

  • Sealing glasses for titanium and titanium alloys
    Patent number: 5104738
    Abstract: Glass compositions containing CaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, SrO and BaO of various combinations of mole % are provided. These compositions are capable of forming stable glass-to-metal seals with titanium and titanium alloys, for use in components such as seals for battery headers.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: April 14, 1992
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard K. Brow, Randall D. Watkins
  • High expansion, lithium corrosion resistant sealing glasses
    Patent number: 5021307
    Abstract: Glass compositions containing CaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, SrO and BaO in various combinations of mole % are provided. These compositions are capable of forming stable glass-to-metal seals with pin materials of 446 Stainless Steel and Alloy-52 rather than molybdenum, for use in harsh chemical environments, specifically in lithium batteries.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: June 4, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard K. Brow, Randall D. Watkins
  • High expansion, lithium corrosion resistant sealing glasses
    Patent number: 5015530
    Abstract: Glass compositions containing CaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, SrO and BaO in various combinations of mole % are provided. These compositions are capable of forming stable glass-to-metal seals with pin materials of 446 Stainless Steel and Alloy-52 rather than molybdenum, for use in harsh chemical environments, specifically in lithium batteries.
    Type: Grant
    Filed: January 21, 1988
    Date of Patent: May 14, 1991
    Assignee: The Unites States of America as represetned by the United States Department of Energy
    Inventors: Richard K. Brow, Randall D. Watkins
  • Method of bonding single crystal quartz by field-assisted bonding
    Patent number: 5009690
    Abstract: The method of producing a hermetic stable structural bond between quartz crystals includes providing first and second quartz crystals and depositing thin films of borosilicate glass and silicon on portions of the first and second crystals, respectively. The portions of the first and second crystals are then juxtaposed in a surface contact relationship and heated to a temperature for a period sufficient to cause the glass and silicon films to become electrically conductive. An electrical potential is then applied across the first and second crystals for creating an electrostatic field between the adjoining surfaces and causing the juxtaposed portions to be attracted into an intimate contact and form a bond for joining the adjoining surfaces of the crystals.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: April 23, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard M. Curlee, Clinton D. Tuthill, Randall D. Watkins
  • Titanium hermetic seals
    Patent number: H1455
    Abstract: Titanium is prenitrided by being heated in a nitrogen environment under conditions which give rise to the formation of a titanium-nitride surface layer on the titanium. Titanium thus prenitrided may be used in electrical components which are hermetically sealed using silicate glasses and standard glass sealing techniques. According to the method of the invention, alkali volatilization and formation of deleterious interfacial silicide are inhibited.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: July 4, 1995
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard K. Brow, Randall D. Watkins