Patents by Inventor Ian J. Bersten

Ian J. Bersten 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: 5544566
    Abstract: A two stage coffee plunger having a movable filter element and a vertically movable baffle element for use in a vessel containing liquid and coffee grounds. The coffee filter element being hand driven through the liquid to permit passage of the liquid, but not the grounds. The baffle being independently movable between the bottom of the vessel and the filter to effect squeezing of the coffee grounds to extract coffee flavor from the grounds. The two stage coffee plunger is also designed for selective relative movement between the baffle and filter.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: August 13, 1996
    Inventor: Ian J. Bersten
  • Patent number: 5185171
    Abstract: A roaster for coffee beans or the like admits the beans into a roasting air stream (31, 23, 32) at an air stream entrance (24). The air stream transports the beans from entrance (24) in an air stream path (26, 36) to an altitude (36) from where they are directed to return to entrance (24) by falling into a hopper having side wall (13, 14) and a constriction (22) which controls the rate of admission of the beans into the air stream. In preferred embodiments the beans are admitted into a horizontal air stream with a component of velocity in the air flow direction and roasting air is also admitted to the hopper directly (46) or indirectly (44, 45) via wall perforations (19, 20).
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: February 9, 1993
    Inventor: Ian J. Bersten
  • Patent number: D266894
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: November 16, 1982
    Inventor: Ian J. Bersten
  • Patent number: D320140
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: September 24, 1991
    Inventor: Ian J. Bersten