Patents by Inventor Jean P. Merle

Jean P. Merle 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).

  • Tape entrainment device with a movable entrainment roller
    Patent number: 4431146
    Abstract: A tape entrainment device especially for a magnetic recorder, comprising a roller (11) tangential to the periphery of each of the reels (9 and 10) and an endless belt (12) which passes between the roller and the reels and engages an arc of the periphery of each of the latter.The roller, which entrains the tape by friction by means of the belt on which it bears, is integral in rotation with an element (24 and/or 26) which is entrained on the one hand in rotation about its own axis and on the other hand is forced mechanically to move relative to the support along a circular path as close as possible to the path of the roller.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: February 14, 1984
    Assignee: Enertec
    Inventor: Jean P. Merle
  • Production of chloroprene
    Patent number: 4308410
    Abstract: Chloroprene is produced by continuous dehydrochlorinating 3,4-dichlorobutene- 1 at 40.degree.-70.degree. C. in two phase liquid mixture of water and alcohol with standing alkali metal hydroxide of not more than 10% by weight in aqueous phase and separating an organic liquid phase containing chloroprene from the resulting mixture.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: December 29, 1981
    Assignees: BP Chemicals Limited, Distugil S.A.
    Inventors: Antony H. P. Hall, Jean P. Merle