Patents by Inventor David M. Stamerjohn

David M. Stamerjohn 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 recovery of amine from spent acid stripping liquor
    Patent number: 4543163
    Abstract: Disclosed is a process for recovering a virtually water-free amine from an amine acid salt thereof. The process comprises a unique combination of phase separation stages practiced under mild heating and distillation stages. An amine product containing less than 0.2% water can be achieved by the present process. The feedstock for the process suitably is an acid scrub liquor used to scrub amine from a vapor stream thereof which has been used in a cold-box molding process in the foundry industry or in the cure of vapor permeation curable coatings in the coatings industry.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: September 24, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: David M. Stamerjohn, Richard V. Norton, Gregory P. Sturtz
  • Process for recovery of amine from spent acid stripping liquor
    Patent number: 4472246
    Abstract: Disclosed is a process for recovering a virtually water-free amine from an amine acid salt thereof. The process comprises a unique combination of phase separation stages practiced under mild heating and distillation stages. An amine product containing less than 0.2% water can be achieved by the present process. The feedstock for the process suitably is an acid scrub liquor used to scrub amine from a vapor stream thereof which has been used in a cold-box molding process in the foundry industry or in the cure of vapor permeation curable coatings in the coatings industry.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: September 18, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: David M. Stamerjohn, Richard V. Norton, Gregory P. Sturtz