Patents by Inventor Frederick M. Boyd

Frederick M. Boyd 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).

  • Quaternary ammonium compounds with high flash points and method of making the same
    Patent number: 5545749
    Abstract: A quaternary ammonium compound solution comprising from about 50% to about 80% of a quaternary ammonium compound and from about 20% to about 50% of a solvent. The solvent being from about 25% to about 100% of alkylene glycol with the remainder being water. The method of making quaternary ammonium compounds comprises reacting methyl chloride and/or benzyl chloride and dialkylmethylamine and/or alkyldimethylamine in an alkylene glycol to completion and diluting the same with sufficient water to a solution in which the alkylene glycol is from about 25% to about 100% of the solvent component of the total solution and the quaternary ammonium compound is from about 50% weight to about 80% weight of the quaternary ammonium compound solution.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: August 13, 1996
    Assignee: Huntington Laboratories, Inc.
    Inventors: Kim R. Smith, Frederick M. Boyd, Samih S. Abouhalkah
  • Method of preparing quarternary ammonium formulations with high flash points
    Patent number: 5414124
    Abstract: A quaternary ammonium compound solution comprising from about 50% to about 80% of a quaternary ammonium compound and from about 20% to about 50% of a solvent. The solvent being from about 25% to about 100% of alkylene glycol with the remainder being water. The method of making quaternary ammonium compounds comprises reacting methyl chloride and/or benzyl chloride and dialkylmethylamine and/or alkyldimethylamine in an alkylene glycol to completion and diluting the same with sufficient water to a solution in which the alkylene glycol is from about 25% to about 100% of the solvent component of the total solution and the quaternary ammonium compound is from about 50% weight to about 80% weight of the quaternary ammonium compound solution.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: May 9, 1995
    Assignee: Huntington Laboratories, Inc.
    Inventors: Kim R. Smith, Frederick M. Boyd, Samih S. Abouhalkah