Patents Represented by Attorney Michael Caddell

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  • Process for the preparation of a dehydrogenation catalyst
    Patent number: 5017543
    Abstract: A process is described for the catalytic dehydrogenation of paraffinic hydrocarbons preferably having from 3 to 6 carbon atoms in the presence of a catalyst containing at least one metal of the platinum group, a co-catalyst and a promoter, the noble metal of the platinum group being deposited into the alumina support in two steps, the first one being followed by a calcination and a reduction, the second one being followed by a calcination.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: May 21, 1991
    Assignee: Labofina, S.A.
    Inventors: Georges E. M. J. De Clippeleir, Elizabeth Baumann Ofstad, Steinar Kvisle
  • Drill bit lubrication system
    Patent number: 4381824
    Abstract: A lubrication system is disclosed for a rolling cutter drill bit, which system utilizes solid or semi-solid sticks of lubricants located in internal channels and continuously biased against rotating surfaces in the bit.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: May 3, 1983
    Assignee: Reed Rock Bit Company
    Inventor: Paul E. Pastusek