Patents by Inventor Earl W. Franklin

Earl W. Franklin 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).

  • Thermally crystallizable glasses and glass-ceramics made therefrom
    Patent number: 4100001
    Abstract: Thermally crystallizable glass and glass-ceramic compositions, having a narrow critical range of compositions coming within the SiO.sub.2 -Al.sub.2 O.sub.3 -Li.sub.2 O system, consist essentially of SiO.sub.2, Al.sub.2 O.sub.3, Li.sub.2 O, TiO.sub.2 and ZrO.sub.2, contain 18.2-20.3 parts Al.sub.2 O.sub.3 per 100 parts by weight of SiO.sub.2 +Al.sub.2 O.sub.3 +Li.sub.2 O, have Li.sub.2 O to Al.sub.2 O.sub.3 molar ratio of 0.55 to 0.63, and contain 2.8-5 weight percent TiO.sub.2 +ZrO.sub.2. Glass-ceramics of superior static fatigue resistance can be made from such glasses.
    Type: Grant
    Filed: April 15, 1977
    Date of Patent: July 11, 1978
    Assignee: Owens-Illinois, Inc.
    Inventor: Earl W. Franklin