Patents by Inventor Emmett J. Speicher

Emmett J. Speicher 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).

  • Methylamines purification by distillation and purge
    Patent number: 4283254
    Abstract: An improvement in the distillative refining of methylamines containing higher amine impurities wherein the higher amines accumulate in the distillation column, tending to cause flooding and product contamination. The improvement involves purging the column at the point the impurities concentrate, mixing the purge with water to form two phases, separating the phases and recycling the water phase for recovery of its methylamines content.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: August 11, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas E. Binau, Emmett J. Speicher