Patents by Inventor Donald G. Cain

Donald G. Cain 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).

  • High efficiency air filtration media
    Patent number: 5336286
    Abstract: A high efficiency air filtration media comprises: about 5 to about 20% by weight of fibrids; about 5 to about 20% by weight of a binder; and about 60 to about 90% by weight of staple fiber. The media has a pressure drop of air across a face of the media of less than or equal to 0.4 inches of water. The media, also, has a sodium chloride particulate test for respirator filter percent efficiency of greater than or equal to 60%.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: August 9, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Paul R. Alexander, Jr., Donald G. Cain, Erika J. Dougherty, Theodore S. Thornburg