Patents by Inventor David Craig Molzahn

David Craig Molzahn 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: 8808662
    Abstract: A process for production of a borohydride compound M(BH4)y. The process has three steps. The first step combines a compound of formula (R1O)yM with aluminum, hydrogen and a metallic catalyst containing at least one metal selected from the group consisting of titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula M(AlH3OR1)y, wherein R1 is phenyl or phenyl substituted by at least one alkyl or alkoxy group; M is an alkali metal, Be or Mg; and y is one or two; wherein the catalyst is present at a level of at least 200 ppm based on weight of aluminum. The second step combines the compound of formula M(AlH3OR1)y with a borate, boroxine or borazine compound to produce M(BH4)y and a byproduct mixture containing alkali metal and aluminum aryloxides. The third step separates M(BH4)y from the byproduct mixture.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: August 19, 2014
    Assignees: Rohm and Haas Company, Dow Global Technologies LLC
    Inventors: Nathan Tait Allen, Robert Butterick, III, Arthur Achhing Chin, Dean Michael Millar, David Craig Molzahn
  • Patent number: 8802051
    Abstract: A process for production of a metal hydride compound MHx, wherein x is one or two and M is an alkali metal, Be or Mg. The process comprises combining a compound of formula (R1O)xM with aluminum, hydrogen and at least one metal selected from among titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula MHx. R1 is phenyl or phenyl substituted by at least one alkyl or alkoxy group. A mole ratio of aluminum to (R1O)xM is from 0.1:1 to 1:1. The catalyst is present at a level of at least 200 ppm based on weight of aluminum.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: August 12, 2014
    Assignees: Rohm and Haas Company, Dow Global Technologies LLC
    Inventors: Nathan Tait Allen, Robert Butterick, III, Arthur Achhing Chin, Dean Michael Millar, David Craig Molzahn
  • Patent number: 8501137
    Abstract: A compound of formula M(AlH3OR1)y, wherein R1 is phenyl substituted by at least one of: (i) an alkoxy group having from one to six carbon atoms; and (ii) an alkyl group having from three to twelve carbon atoms; wherein M is an alkali metal, Be or Mg; and y is one or two.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: August 6, 2013
    Assignees: Rohm and Haas Company, Dow Global Technologies LLC
    Inventors: Nathan Tait Allen, Robert Butterick, III, Arthur Achhing Chin, Dean Michael Millar, David Craig Molzahn
  • Publication number: 20110236286
    Abstract: A process for production of a borohydride compound M(BH4)y. The process has three steps. The first step combines a compound of formula (R1O)yM with aluminum, hydrogen and a metallic catalyst containing at least one metal selected from the group consisting of titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula M(AlH3OR1)y, wherein R1 is phenyl or phenyl substituted by at least one alkyl or alkoxy group; M is an alkali metal, Be or Mg; and y is one or two; wherein the catalyst is present at a level of at least 200 ppm based on weight of aluminum. The second step combines the compound of formula M(AlH3OR1)y with a borate, boroxine or borazine compound to produce M(BH4)y and a byproduct mixture containing alkali metal and aluminum aryloxides. The third step separates M(BH4)y from the byproduct mixture.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Inventors: Nathan Tait Allen, Robert Butterick, III, Arthur Achhing Chin, Dean Michael Millar, David Craig Molzahn
  • Publication number: 20110236287
    Abstract: A compound of formula M(AlH3OR1)y, wherein R1 is phenyl substituted by at least one of: (i) an alkoxy group having from one to six carbon atoms; and (ii) an alkyl group having from three to twelve carbon atoms; wherein M is an alkali metal, Be or Mg; and y is one or two.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Inventors: Nathan Tait Allen, Robert Butterick, III, Arthur Achhing Chin, Dean Michael Millar, David Craig Molzahn
  • Publication number: 20110236300
    Abstract: A process for production of a metal hydride compound MHx, wherein x is one or two and M is an alkali metal, Be or Mg. The process comprises combining a compound of formula (R1O)xM with aluminum, hydrogen and at least one metal selected from among titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula MHx. R1 is phenyl or phenyl substituted by at least one alkyl or alkoxy group. A mole ratio of aluminum to (R1O)xM is from 0.1:1 to 1:1. The catalyst is present at a level of at least 200 ppm based on weight of aluminum.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Inventors: Nathan Tait Allen, Robert Butterick, III, Arthur Achhing Chin, Dean Michael Millar, David Craig Molzahn