Patents by Inventor J. Douglas Sainsbury

J. Douglas Sainsbury 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: 5263253
    Abstract: The present invention is directed to a compost processing tool having a blade at one end thereof suitable for chopping, cutting and turning compost. The tool also includes a hollow shaft extending from the blade with the shaft having a host of openings through a wall of the shaft with the holes spaced in the length of the shaft. This hollow shaft may be used to provide a lever for the blade used during chopping, cutting and turning of the compost and the shaft also serves as a breather tube when placed in a volume of compost with the shaft partially buried in the compost.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: November 23, 1993
    Assignee: Barclay Recycling Inc.
    Inventor: J. Douglas Sainsbury
  • Patent number: 5190296
    Abstract: The present invention relates to a memory game involving cards or playing pieces having different indicia thereon. The playing pieces are supportable on a flat surface to conceal a particular indicia on that surface. The playing pieces are coordinated to have a particular relationship therebetween such that one piece may be desired by more than one player. The particular method of play also requires significant strategy by the players which can be dramatically influenced by the play of others.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: March 2, 1993
    Inventor: J. Douglas Sainsbury