Patents by Inventor Yang Wan Ran

Yang Wan Ran 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).

  • Can opener
    Patent number: 6230588
    Abstract: A can opener used with a can having an operating rim and an opening to be covered in an air-tight manner by a cover having an operating flange includes an operating medium for being operated against the operating flange to open the can covered in the air-tight manner by the cover, and an attaching medium secured to the can for always attaching thereto the operating medium in a position ready for opening the can.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: May 15, 2001
    Inventor: Yang Wan Ran
  • Can opener
    Patent number: 5931058
    Abstract: A can opener used with a can having an operating rim and an opening to be covered in an air-tight manner by a cover having an operating flange includes an operating medium for being operated against the operating flange to open the can covered in the air-tight manner by the cover, and an attaching medium secured to the can for always attaching thereto the operating medium in a position ready for opening the can.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: August 3, 1999
    Inventor: Yang Wan Ran