Patents by Inventor Mario A. M. Sierra

Mario A. M. Sierra 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).

  • Patent number: 4975295
    Abstract: A water-soluble coffee tablet comprising a mixture of ground coffee and an agglutinating agent is manufactured under arid conditions by grinding soluble coffee powder in the presence of an agglutinating agent to produce a granular mixture, then sifting the granulated mixture through a thin sieve to obtain a homogenous mixture, and compressing the homogenous mixture to form a coherent tablet. The coffee tablets may be individually sealed in an impervious wrapping or enclosed in air-tight containers to retain the flavor and aroma characteristics of the product under long-term storage.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: December 4, 1990
    Inventor: Mario A. M. Sierra