Patents by Inventor Leonid Blokh

Leonid Blokh 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).

  • Card game
    Patent number: 5505458
    Abstract: An educational card game designed to develope mathematical abilities, to perform various combined operations by dealing cards to each player and selecting at random a card designating the number that must be calculated from the card numbers of each players hand; wherein a timing device is provided to deal out the cards.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: April 9, 1996
    Inventors: Leonid Blokh, George Spector
  • Apparatus for manufacturing elastic rings
    Patent number: 4659058
    Abstract: A mold for forming an elliptical elastic ring is provided and consists of a pair of plates, each having a mating cavity to form an elastic ring with same circumferential length as a circle of given diameter whereby the mold can be reduced in size in one direction for economic advantages.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: April 21, 1987
    Inventors: Leonid Blokh, George Spector