Patents by Inventor Earl Kopp

Earl Kopp 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).

  • Coffee filter ring
    Patent number: 4656932
    Abstract: A device for securing a coffee filter in a coffee maker basket comprises a contractable annular member expandable for urging the coffee filter against the inner side of the basket to prevent coffee grounds from slipping between the filter and the side of the basket and into the coffee.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: April 14, 1987
    Inventor: Earl Kopp