Patents by Inventor Merton R. Hubbard

Merton R. Hubbard 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).

  • High speed process for roasting coffee
    Patent number: 4322447
    Abstract: A coffee roasting process for forming a low density roasted coffee having a yield of high soluble solids in which the green coffee beans are dry roasted by passage in a fluidized bed through a two-stage roaster. In the first stage, the beans are heated to a temperature of 550.degree. F. to 570.degree. F. by a roasting gas for partial roasting and expansion of their cellular structure. Then, in the second zone, the beans are contacted with an independent roasting gas stream at the same temperature and lower velocity to complete the roasting process.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: March 30, 1982
    Assignee: Hills Bros. Coffee, Inc.
    Inventor: Merton R. Hubbard