Patents by Inventor Ruben Castillo, Jr.

Ruben Castillo, Jr. 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).

  • Non-spread peanut butter slices and method of making
    Patent number: 5312641
    Abstract: A non-spread, sliced peanut butter product containing chunky peanut butter, powdered egg white, flour, and an emulsifier. The ingredients are mixed together, pressed or extruded into sheets which are separated by waxed paper into pieces the size of a bread slice and about 0.2 inches thick.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: May 17, 1994
    Assignee: Celso Rodriguez
    Inventor: Ruben Castillo, Jr.