1
Jay S Walker, James A Jorasch, Magdalena Mik: Method and apparatus for team play of slot machines. Walker Digital, Dean Alderucci, Nandu A Talwalkar, November 7, 2000: US06142872 (613 worldwide citation)

Slot machines for enabling team play by a plurality of slot machine players are disclosed. The game results of each team player are combined in a predefined manner to obtain a team game result. The game results of each player may be combined on a "per-spin" basis, or collected for each team player o ...


2
Jay S Walker, James A Jorasch, Thomas M Sparico: Electronic gaming device offering a game of knowledge for enhanced payouts. Walker Digital, Nandu A Talwalkar, Dean Alderucci, February 27, 2001: US06193606 (278 worldwide citation)

An electronic gaming system is disclosed that allows a player to play a game of knowledge, such as a trivia game, while playing a slot machine. The player can preferably use successful trivia game results to access higher reward levels with the slot machine, with each reward level having progressive ...


3
Jay S Walker, James A Jorasch: System and method for generating and executing insurance policies for gambling losses. Walker Digital, Dean Alderucci, Patrick J Buckley, Nandu A Talwalkar, September 5, 2000: US06113493 (175 worldwide citation)

A system and method for providing a gambling loss insurance policy automatically computes insurance premiums and processes gambling sessions covered by the gambling loss insurance policies. The players may purchase the insurance policies using various means such as coins, earned winnings, or credit ...


4
Jay S Walker, Bruce Schneier, James A Jorasch: Method and apparatus for secure document timestamping. Walker Digital, Dean Alderucci, Nandu A Talwalkar, July 17, 2001: US06263438 (87 worldwide citation)

The invention relates devices and methods for creating a cryptographically assured timestamp that can be verified by a party that was not present during the creation of the timestamp. The timestamp is applied to physical documents, and other substrates capable of receiving an optically detectable ma ...


5
Jay S Walker, Andrew S Van Luchene: Method and apparatus for managing the sale of aging products. Walker Digital, Dean Alderucci, Nandu A Talwalkar, September 12, 2000: US06119100 (45 worldwide citation)

A store controller stores a series of prices for a product and respective effective periods during which the prices are effective. A customer submits an offer to buy the product at an "offer price" that is one of the series of prices. The offer also has an offer period that elapses when the respecti ...