Patents by Inventor Charles E. von Reis

Charles E. von Reis 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).

  • Filter holder for cigarette research testing
    Patent number: 4184360
    Abstract: A disposable testing chamber for cigarettes which includes a thin, sheet-like transparent housing element for retaining a filter disc with a conical closure element having a press-fit into the housing to seal the disc and become self-retaining in the housing, each element having a peripheral, annular wall portion in a plane normal to the axis of the chamber to register with and lie adjacent to the periphery of the filter disc.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: January 22, 1980
    Assignee: Gelman Sciences, Inc.
    Inventors: Attila Vadnay, Charles E. von Reis