Patents by Inventor Keith John Donohue

Keith John Donohue 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).

  • ATOMIC LAYER DEPOSITION DERIVED PROTECTIVE COATINGS FOR CALCIUM FLUORIDE OPTICAL COMPONENTS
    Publication number: 20230123796
    Abstract: A coated optical component includes an optical component and a conformal coating. The optical component is crystalline calcium fluoride and the conformal coating is an atomic layer deposition (ALD) coating in contact with a surface of the optical component. The ALD coating includes a metal fluoride ALD coating having a metal different from calcium. The ALD coating can include other metal oxide or metalloid oxide ALD coating layers. The method for making the coated optical component includes depositing an atomic layer deposition (ALD) coating on a surface of the optical component, where the ALD coating can be a metalloid oxide, a metal oxide, a metal fluoride having a metal that is different from calcium, or combinations of these. Sulfur hexafluoride is used as a fluorine source in the ALD process.
    Type: Application
    Filed: October 13, 2022
    Publication date: April 20, 2023
    Inventors: Donald Erwin Allen, Gerald Philip Cox, Keith John Donohue, Ming-Huang Huang, Hoon Kim, Jue Wang