Patents by Inventor Douglas B. Hale

Douglas B. Hale 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).

  • Potato preservation method
    Patent number: 4957761
    Abstract: Uncooked potato products are preserved by a process wherein the potatoes are peeled, cut, blanched, cooled, and dried. Then the potato products are packaged in a flexible vacuum bag which is evacuated, flushed with an inert gas, and sealed. The preservation process is designed to preserve pre-cut, uncooked potatoes for storage at 34.degree.-38.degree. F. for four to six weeks.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: September 18, 1990
    Assignee: Oppenheimer Companies
    Inventor: Douglas B. Hale