Patents by Inventor Roger J. Dahl

Roger J. Dahl 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).

  • Lightweight mirror and method of making
    Patent number: 6598984
    Abstract: A lightweight mirror structure is formed from a unitary body of mirror blank material by using an abrasive water jet cutting apparatus to cut a plurality of cylindrical channels in the blank between and extending parallel to the mirror surface and the back surface of the mirror structure. The process may be employed to quickly produce inexpensive lightweight mirror structures.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: July 29, 2003
    Assignee: Eastman Kodak Company
    Inventors: Ronald M. Rietz, Roger J. Dahl
  • Lightweight mirror and method of making
    Publication number: 20030016456
    Abstract: A lightweight mirror structure is formed from a unitary body of mirror blank material by using an abrasive water jet cutting apparatus to cut a plurality of cylindrical channels in the blank between and extending parallel to the mirror surface and the back surface of the mirror structure. The process may be employed to quickly produce inexpensive lightweight mirror structures.
    Type: Application
    Filed: September 18, 2002
    Publication date: January 23, 2003
    Inventors: Ronald M. Rietz, Roger J. Dahl