Patents by Inventor James Charles Haines

James Charles Haines 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).

  • Method of making sound absorbing laminates and laminates having maximized sound absorbing characteristics
    Patent number: 5824973
    Abstract: A sound absorption laminate comprises a porous insulation substrate, such as, a glass, polymeric or natural fiber blanket or a foamed polymeric resin sheet and a facing sheet with a high air flow resistance. The facing sheet is superimposed upon a surface of the porous insulation substrate to augment the acoustical properties of the substrate. With the facing sheet the air flow resistance of the laminate is greater than the air flow resistance of the substrate and the laminate exhibits a higher sound absorption coefficient than the sound absorption coefficient of the substrate. Thus, the laminate exhibits better sound absorption properties than the substrate and is suitable for sound absorption applications for which the substrate alone would not be suitable.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: October 20, 1998
    Assignee: Johns Manville International, Inc.
    Inventors: James Charles Haines, Ralph Michael Fay