Patents by Inventor Al McDonald

Al McDonald 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: 8052424
    Abstract: A series of ceramic ingots is provided in which each ingot in the series, referred to as base ingots, has a shade corresponding to a different shade of a shade guide. The number of differently shaded base ingots is less than the total number of shades associated with the shade guide. A base ingot is selected from the series having a shade of a value at least as high as a shade associated with a patient's tooth. If the base ingot shade matches the patient's tooth, a restoration made with the selected base ingot can be glazed as is; otherwise the dental restoration is stained with a stain having a lower value than the selected base ingot to match the tooth. Thus, the total different number of ingot shades needed in inventory is reduced but without requiring staining in every case.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: November 8, 2011
    Assignee: Dentsply International, Inc.
    Inventors: Tom Cameron, Vicky Nemzer, Al McDonald, Arlo King, Christopher Chu, Slawomir Banasiak
  • Publication number: 20090061390
    Abstract: A series of ceramic ingots is provided in which each ingot in the series, referred to as base ingots, has a shade corresponding to a different shade of a shade guide. The number of differently shaded base ingots is less than the total number of shades associated with the shade guide. A base ingot is selected from the series having a shade of a value at least as high as a shade associated with a patient's tooth. If the base ingot shade matches the patient's tooth, a restoration made with the selected base ingot can be glazed as is; otherwise the dental restoration is stained with a stain having a lower value than the selected base ingot to match the tooth. Thus, the total different number of ingot shades needed in inventory is reduced but without requiring staining in every case.
    Type: Application
    Filed: February 14, 2008
    Publication date: March 5, 2009
    Inventors: Tom Cameron, Vicky Nemzer, Al McDonald, Arlo King, Christopher Chu, Slawomir Banasiak