Patents by Inventor Charles H. Drummond

Charles H. Drummond 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).

  • Glasses and methods for producing glasses with reduced solar transmission
    Publication number: 20030008759
    Abstract: The invention relates to modeling and other techniques which can be used to find specified interactions among components used to make a glass which can produce specified characteristics of the resulting glass material. Other aspects of the invention relate to specified materials and material combinations in glasses that produce specified results. The materials which are used may interact with one another to produce effects that are based on the interaction with the other materials. One aspect defines a glass which has a solar transmission of less than 40% for a glass less than 4 mm, with a 70% visible transmission. Another aspect teaches a solar control glass with a visible transmission of less than 25% and a solar transmission of less than 15%.
    Type: Application
    Filed: March 15, 2002
    Publication date: January 9, 2003
    Inventors: Darryl J. Costin, Russell D. Blume, Charles H. Drummond, Harold S. Haller, Clarence H. Martin