Patents by Inventor Simon Chun Yuen To

Simon Chun Yuen To 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).

  • Ring binder
    Patent number: 5980146
    Abstract: A ring binder (100, 200) adapted to be secured to a cover (116, 214) is disclosed as comprising a substantially rigid upper plate member (102, 202) supporting a pair of lower pivotable plates (104a, 104b, 204a, 204b) to which a plurality of rings (106, 206) are mounted, and the upper plate member (102, 202) comprises two ends and the cover (116, 214) abuts at least part of the upper plate member (102, 202), and said part surrounds the end of the upper plate member (102, 202) by substantially 360.degree..
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: November 9, 1999
    Assignee: World Wide Stationery Manufacturing Company, Ltd.
    Inventor: Simon Chun Yuen To
  • Ring binder
    Patent number: 5772348
    Abstract: A ring binder (100, 200, 300) adapted to be secured to a cover (112, 212, 312) is disclosed as comprising a substantially rigid upper plate member (102, 202, 302) supporting two pivotable lower plates (104a, 104b, 204a, 204b, 304a, 304b) to which a plurality of rings (106, 206, 306) are mounted, and at least a set of claws (108, 208, 308) integrally formed with the ring binder (100, 200, 300) and adapted to secure the ring binder (100, 200, 300) to the cover (112, 212, 312).
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: June 30, 1998
    Assignee: World Wide Stationary Company Limited
    Inventor: Simon Chun Yuen To
  • Ring binder
    Patent number: D408851
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: April 27, 1999
    Assignee: World Wide Stationery Manufacturing Company Ltd.
    Inventor: Simon Chun Yuen To