Patents by Inventor Donald Chambers

Donald Chambers 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).

  • Publication number: 20140041264
    Abstract: Greeting card with an electronic screen incorporated in any way into or onto the material, are described herein having a durable body composed of heavy gauge vinyl, leather, rubber, wood, foam, cloth, or any material capable of withstanding frequent use. The incorporated screen in the durable body may be located in the front, back, or inside of the card, depending upon the size and style of the electronic device and/or the style or type of greeting message. The greeting card may include panels, holes, or open areas which may be located throughout various locations on the durable greeting card body to provide access to any number of ports, buttons, screens, keypads, switches, or a combination thereof.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 13, 2014
    Inventor: Donald Chambers
  • Publication number: 20030161094
    Abstract: This invention relates to a flat computer screen of the type which is in common use on laptop and hand-held computers where light weight and small size are of high importance to the computer user.
    Type: Application
    Filed: February 28, 2002
    Publication date: August 28, 2003
    Inventor: Donald Chambers
  • Patent number: 5428344
    Abstract: A safety apparatus for use on a hoisting crane used to hoist cargo from cargo transport trucks that detects hoisting such trucks and renders the hoisting mechanism inoperative. The safety apparatus includes sensors responsive to an unsafe condition in such trucks to generate a safety signal. A transmitter responsive to the safety signal transmits an operational signal to the hoisting crane that upon receiving and recognizing the operational signal renders the hoisting mechanism inoperative and alerts the crane operator of the unsafe condition.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: June 27, 1995
    Inventors: John R. Curry, Donald A. Chambers
  • Patent number: 5260688
    Abstract: Sensors mounted on respective cargo transport trucks transferring cargo to a hoisting crane and responsive to an unsafe condition in such trucks to generate an electrical safety signal to be transmitted to such crane for rendering the hoisting mechanism inoperative.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: November 9, 1993
    Inventors: John R. Curry, Donald A. Chambers
  • Patent number: 5047328
    Abstract: Disclosed are methods for determining the severity and type of periodontal disease in mammals. The methods include the steps of (1) sampling crevicular fluid for a selected brief period of time, (2) assaying the crevicular fluid sample by colorimetric or other means to determine the total quantity of aspartate aminotransferase present, and (3) correlating the total quantity of asparatate aminotransferase present in the crevicular fluid sample with a standard for the selected sampling period which is indicative of the severity and type of periodontal disease.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: September 10, 1991
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Donald A. Chambers, Thomas E. Schindler
  • Patent number: 5041373
    Abstract: An objective method for determining the presence of active periodontal disease in mammals, comprising assaying cervicular fluid for the presence of elevated levels of the enzyme aspartate aminotransferase.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: August 20, 1991
    Assignee: The Board of Trustees of the University of Illinois
    Inventor: Donald A. Chambers
  • Patent number: D657816
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: April 17, 2012
    Inventor: Donald Chambers