Patents by Inventor Allen B. Quackenbush

Allen B. Quackenbush 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).

  • Ultrapure hydrazine production
    Patent number: 5035775
    Abstract: A process for producing hydrazine containing at least 98 percent by weight of N.sub.2 H.sub.4 which admixes an aqueous solution of hydrazine with an alkali metal hydroxide to form a hydrazine solution having a N.sub.2 H.sub.4 concentration of at least 70 percent by weight. The molar ratio of alkali metal hydroxide to water is less than about 0.5:1. The concentrated hydrazine solution is distilled in a fractional distillation apparatus at an overhead vapor temperature below about 50.degree. C. and at a pressure of less than about 60 mm Hg.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: July 30, 1991
    Assignee: Olin Corporation
    Inventors: Allen B. Quackenbush, James G. Rigsby