Patents by Inventor Kwan W. Chan

Kwan W. Chan 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).

  • Device for the production of aroma extracts from coffee or tea
    Patent number: 4898090
    Abstract: An improved apparatus for the production of aromatic extracts from coffee or tea is of the type having a filter vessel and a collecting container, wherein the filter vessel has a plurality of detent lugs which are received within detent recesses disposed in an upper rim portion of the collecting container for detachable engagement therewith. This construction results in the secure connection of the filter vessel atop the collecting container, for preventing accidental detachment of the filter vessel while permitting intentional detachment of the filter vessel by proper manipulation of a handle portion of the filter vessel to disengage the detent lugs.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: February 6, 1990
    Assignee: Melitta-Werke Bentz & Sohn
    Inventor: Kwan W. Chan
  • Coffeemaker or the like
    Patent number: D301194
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: May 23, 1989
    Assignee: Melitta, Inc.
    Inventors: Kwan W. Chan, Detlef M. T. von der Luehe