Patents by Inventor John L. Burba, III

John L. Burba, III 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).

  • Method of making crystalline 2-layer lithium aluminates in ion exchange resins
    Patent number: 4461714
    Abstract: The bayerite form of crystalline alumina, Al(OH).sub.3, contained within a macroporous ion exchange resin is converted to the gibbsite form of Al(OH).sub.3 by reaction with hot MgX.sub.2, where X is halide, followed by water-washing the MgX.sub.2 portion from the product, thereby causing the conversion of bayerite to the gibbsite form of crystalline Al(OH).sub.3. The gibbsite form may then be reacted with hot LiX solution, where X is anion, to form crystalline 2-layer LiX.2Al(OH).sub.3.nH.sub.2 O.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: July 24, 1984
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III
  • Lithium aluminates for separating hydrocarbons
    Patent number: 4430097
    Abstract: Particles of crystalline LiX.multidot.2Al(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in separating hydrocarbons according to boiling point ranges.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: February 7, 1984
    Assignee: The Dow Chemical Co.
    Inventor: John L. Burba, III
  • Crystalline lithium aluminates
    Patent number: 4348295
    Abstract: Crystalline hydrous aluminas, Al(OH).sub.3, are reacted with LiX, where X is anion, under appropriate conditions to prepare crystalline compounds conforming substantially to the empirical formulaLiX.2Al(OH).sub.3.nH.sub.2 Owhere X is anion and nH.sub.2 O represents waters of hydration. Depending on the beginning hydrous alumina, some of the crystalline compounds are of a novel 2-layer unit cell structure and some of a 3-layer unit cell structure.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: September 7, 1982
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III
  • Crystalline lithium aluminates
    Patent number: 4348296
    Abstract: Porous substrates containing seeds of hydrous crystalline alumina are contacted with an aqueous solution of alkaline aluminate, thereby causing additional crystalline hydrous alumina to grow on the seeds within the pores of the substrate.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: September 7, 1982
    Assignee: The Dow Chemical Company
    Inventors: William C. Bauman, John M. Lee, John L. Burba, III
  • Lithium aluminates for gas chromatograph columns
    Patent number: 4321065
    Abstract: Particles of crystalline LiX.multidot.2A1(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in gas chromatography in separating hydrocarbons according to boiling point ranges.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: March 23, 1982
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III