Patents by Inventor Timothy D. Hoewing

Timothy D. Hoewing 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 the preparation of secondary alkyl sulfate-containing surfactant compositions
    Patent number: 5349101
    Abstract: This invention relates to solid secondary alkyl sulfate-containing surface active compositions which are formed by crystallization and which contain at least about 80 percent by weight of secondary alkyl sulfate. These compositions are substantially free of unreacted organic matter and water. The invention further relates to a process for preparing these solid secondary alkyl sulfate-containing compositions.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: September 20, 1994
    Assignee: Shell Oil Company
    Inventors: Eugene F. Lutz, David K. Schisla, Robert S. Tomaskovic, Timothy D. Hoewing