Patents by Inventor Harry Otto Burrus

Harry Otto Burrus 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 producing hydrogen fluoride
    Patent number: 4031191
    Abstract: There is disclosed an improvement in the process of manufacturing HF wherein sulfur accumulates in HF process equipment. The improvement comprises adding to the process equipment sufficient SO.sub.3 to remove the sulfur and emptying the equipment.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: June 21, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry Otto Burrus