Patents by Inventor Charles Donaldson

Charles Donaldson 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).

  • Liquid splat game kit and method of play
    Patent number: 9016691
    Abstract: One embodiment of a liquid splat game kit includes a plurality of squirt bottles for storing water, a plurality of water coloring tablets for transitioning the water into a colored liquid, a plurality of playing cards, and a game-play manual.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: April 28, 2015
    Inventor: Charles Donaldson
  • LIQUID SPLAT GAME KIT AND METHOD OF PLAY
    Publication number: 20150097337
    Abstract: One embodiment of a liquid splat game kit includes a plurality of squirt bottles for storing water, a plurality of water coloring tablets for transitioning the water into a colored liquid, a plurality of playing cards, and a game-play manual.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Inventor: CHARLES DONALDSON
  • Method and apparatus for controlling the temperature of a device using independent multi-stage thermoelectric coolers
    Patent number: 5704213
    Abstract: A method and apparatus for controlling the temperature of a device, wherein said method and device includes a plurality of thermoelectric coolers with independent temperature feedback control loops monitors and controls the temperature of a device. One thermoelectric cooler coupled to the package of the device maintains a desired temperature of the package by utilizing a first independent control loop. A second thermoelectric cooler coupled to the device maintains a desired temperature of the device by utilizing a second independent control loop. The operating temperature of the package of the device is maintained as the temperature of the environment varies.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: January 6, 1998
    Assignee: Raytheon E-Systems, Inc.
    Inventors: Steven R. Smith, Clifford Molaskey, Charles Donaldson
  • Racing high chair
    Patent number: D436258
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: January 16, 2001
    Inventor: Charles Donaldson
  • Racing high chair
    Patent number: D439061
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: March 20, 2001
    Inventor: Charles Donaldson