Patents by Inventor James M. Cumming

James M. Cumming 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).

  • Film treatment apparatus
    Patent number: 4241377
    Abstract: Apparatus to treat films employs a feed means to feed film into a treatment zone wherein streams of gas disperse dust off film surfaces. Charged ions are also supplied to that zone to neutralize static on those surfaces.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: December 23, 1980
    Inventor: James M. Cumming
  • Planar gas and ion distribution
    Patent number: 4213167
    Abstract: A film strip, as for example photograph film, is treated to remove static and dust thereon by directing gaseous streams across opposite film surfaces, and by distributing ions into the gas streams to be carried into contact with the film opposite surfaces, for neutralizing the static and enabling dust to be blown off such surfaces.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: July 15, 1980
    Inventors: James M. Cumming, Donald G. Saurenman
  • Ion treatment of photographic film
    Patent number: 4194232
    Abstract: Opposite sides of film slides are efficiently cleaned by employing voltage energized needle tips to distribute ions into gas streams that flow within a venturi-shaped zone through which the film slides are passed.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: March 18, 1980
    Inventors: James M. Cumming, Donald G. Saurenman