Patents by Inventor Donna M. Cason-Smith

Donna M. Cason-Smith 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).

  • Process for preparing ammonium dinitramide
    Patent number: 5714714
    Abstract: A process for preparing ammonium dinitramide by:(1) nitrating either ethyl carbamate or methyl carbamate to form the corronding mononitrate compound, ethyl N-nitrocarbamate or methyl N-nitrocarbamate;(2) reacting the N-nitrocarbamate with ammonia under anhydrous conditions to produce the corresponding ammonium salt, ammonium ethyl N-nitrocarbamate or ammonium methyl N-nitrocarbamate;(3) nitrating the ammonium salt and then treating the reaction mixture with ammonia to produce ammonium dinitramide, ammonium nitrate, and regenerate the original ethyl carbamate or methyl carbamate compound.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: February 3, 1998
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alfred G. Stern, William M. Koppes, Michael E. Sitzmann, Lori A. Nock, Donna M. Cason-Smith
  • Energetic polymer
    Patent number: 5266675
    Abstract: Energetic dihydroxy-terminated copolyformals which are formed from formalyde and dinitraminediol and fluorodiol comonomers wherein the dinitraminediol isHOCH.sub.2 N(NO.sub.2)CH.sub.2 N(NO.sub.2)CH.sub.2 N(NO.sub.2)CH.sub.2 OH,HOCH.sub.2 N(NO.sub.2)CH.sub.2 N(NO.sub.2)CH.sub.2 N(NO.sub.2)CH.sub.2 N(NO.sub.2)CH.sub.2 OH,or mixtures thereof, and wherein the fluorodiol isHOCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 CH.sub.2 OH,HOCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 CH.sub.2 OH,HOCH.sub.2 CF(CF.sub.3)OCF.sub.2 CF.sub.2 CF.sub.2 CH.sub.2 OH,HOCH.sub.2 CF.sub.2 OCF.sub.2 CF.sub.2 OCF.sub.2 CH.sub.2 OH,HOCH.sub.2 CH.sub.2 (CF.sub.2).sub.2 CH.sub.2 CH.sub.2 OH,HOCH.sub.2 CH.sub.2 (CF.sub.2).sub.4 CH.sub.2 CH.sub.2 OH,HOCH.sub.2 CH.sub.2 (CF.sub.2).sub.6 CH.sub.2 CH.sub.2 OH,HOCH.sub.2 CH.sub.2 (CF.sub.2).sub.8 CH.sub.2 CH.sub.2 OH,HOCH.sub.2 CH.sub.2 (CF.sub.2).sub.10 CH.sub.2 CH.sub.2 OH,or mixtures thereof andwherein the terminal functional groups are fluorodiol monomer hydroxy groups.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: November 30, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Horst G. Adolph, Donna M. Cason-Smith
  • Process for producing hydroxy terminated nitramines
    Patent number: 5250730
    Abstract: A process by which 1,7-dihydroxy-2,4,6-trinitro-2,4,6-triazaheptane or 1,9-dihydroxy-2,4,6,8-tetranitro-2,4,6,8-tetraazanonane is produced by hydrolyzing 1,7-diacetoxy-2,4,6-trinitro-2,4,6-triazaheptane or 1,9-diacetoxy-2,4,6,8-tetranitro-2,4,6,8-tetraazanonane with concentrated aqeuous hydrochloric acid comprising from 28 to 32 weight percent of hydrogen chloride with the remainder being water.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: October 5, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Donna M. Cason-Smith, Horst G. Adolph
  • Process for producing N-chloromethyl nitramines
    Patent number: 5243075
    Abstract: 1-acetoxy-2,4,6-trinitro-2,4,6-triazaheptane, 1,7-diacetoxy-2,4,6-trinitro-2,4,6-triazaheptane, or 1,9-diacetoxy-2,4,6,8-tetranitro-2,4,6,8-tetraazanonane is reacted with a mixture of concentrated hydrochloric acid and trifluoroacetic 2,4,6-triazaheptane, 1,7-dichloro-2,4,6-trinitro-2,4,6-triazaheptane, or 1,7-dichloro-2,4,6,8-tetranitro-2,4,6,8-tetraazanonane.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: September 7, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Donna M. Cason-Smith