Patents by Inventor Chan W. Griswold

Chan W. Griswold 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: 8382578
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 26, 2013
    Assignee: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Patent number: 8262459
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: September 11, 2012
    Assignee: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Patent number: 8262460
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: September 11, 2012
    Assignee: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Publication number: 20110269536
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Application
    Filed: July 12, 2011
    Publication date: November 3, 2011
    Applicant: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Publication number: 20110269537
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Application
    Filed: July 12, 2011
    Publication date: November 3, 2011
    Applicant: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Publication number: 20110269538
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Application
    Filed: July 12, 2011
    Publication date: November 3, 2011
    Applicant: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Patent number: 8002621
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: August 23, 2011
    Assignee: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Patent number: 7758428
    Abstract: An apparatus and method affords, to authorized persons, access to one or more lockable areas of one or more gaming machines. Each area includes a door or switch and an associated electrically operable lock mechanism which controls access to the area. Each machine has a local processor communicating with a central host computer and with lock processors for each of its lockable areas. Personnel identification and access authorization data is stored at the host computer. Data may also be stored on personal data cards, respectively assigned to individual persons. A person seeking access inputs identification data at the machine, and the host computer responds with signals to unlock lock mechanisms for areas which the identified person is authorized to access. Each machine monitors the states of all of its locks and doors. A manual override key, disabled when power is on, operates the lock mechanisms when power is off.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: July 20, 2010
    Assignee: IGT
    Inventors: Harold Mattice, Joseph R. Hedrick, Chan W. Griswold
  • Publication number: 20080076503
    Abstract: An apparatus and method for a game including a plurality of paytables, wherein each of the paytables has an average expected payout. The gaming device initially employs a default paytable and enables a player to cause the gaming device to change the employed paytable. If the player chooses to cause the gaming device to change the employed paytable, the gaming device randomly selects another paytable from the plurality of paytables and determines a game outcome based on the randomly selected paytable. If the player does not choose to cause the gaming device to change the employed paytable, the gaming device determines a game outcome based on the default paytable. In one embodiment, when a player chooses to cause the gaming device to select another paytable, the player has a chance to obtain a paytable that includes higher or better awards.
    Type: Application
    Filed: September 1, 2006
    Publication date: March 27, 2008
    Applicant: IGT
    Inventors: Harold E. Mattice, Christian E. Gadda, James W. Stockdale, Chan W. Griswold, Richard Wilder
  • Publication number: 20020142831
    Abstract: An apparatus and method affords, to authorized persons, access to one or more lockable areas of one or more gaming machines. Each area includes a door or switch and an associated electrically operable lock mechanism which controls access to the area either directly, or indirectly by controlling enablement of an associated manual key-operated latch assembly. Each machine has a local processor communicating with a central host computer and with lock processors for each of its lockable areas. Personnel identification and access authorization data is stored at the host computer. Part of the data may also be stored on personal data cards, respectively assigned to individual persons. A person seeking access inputs identification data at the machine, using a card reader or other data input device, and the host computer responds with signals to unlock lock mechanisms for areas which the identified person is authorized to access. Each machine monitors, and sends to the host, the states of all of its locks and doors.
    Type: Application
    Filed: April 2, 2001
    Publication date: October 3, 2002
    Inventors: Harold Mattice, Joseph R. Hedrick, Chan W. Griswold
  • Patent number: D537482
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: February 27, 2007
    Assignee: IGT
    Inventors: Christian E. Gadda, Richard L. Wilder, Harold Mattice, Ricky Lew, Chan W. Griswold
  • Patent number: D537885
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: March 6, 2007
    Assignee: IGT
    Inventors: Christian E. Gadda, Richard L. Wilder, Harold Mattice, Ricky Lew, Chan W. Griswold
  • Patent number: D540398
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: April 10, 2007
    Assignee: IGT
    Inventors: Christian E. Gadda, Richard L. Wilder, Harold Mattice, Ricky Lew, Chan W. Griswold
  • Patent number: D540399
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: April 10, 2007
    Assignee: IGT
    Inventors: Christian E. Gadda, Richard L. Wilder, Harold Mattice, Ricky Lew, Chan W. Griswold