Patents by Inventor Colin R. MacKenzie

Colin R. MacKenzie 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).

  • Phage display libraries of human Vfragments
    Patent number: 8372954
    Abstract: Phage display libraries are taught in which the recombinant phage population displays a plurality of potential binding fragments having preferred characteristics of solubility and/or intermolecular interaction. Also taught are methods of biasing display libraries to produce variants which more closely approximate the preferred characteristics of the parental binding fragment.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: February 12, 2013
    Assignee: National Research Council of Canada
    Inventors: Jamshid Tanha, Joycelyn Entwistle, Saran Narang, Michael Dan, Colin R. Mackenzie, Carole Grad
  • Milling tool
    Patent number: 5181564
    Abstract: A tool for milling a down-hole casing or tubing comprising a tubular body rotatable about its longitudinal axis and having a longitudinal passage therethrough. Means is provided at a first end of the cylindrical body for connection to a drive means to rotate the body. The first end forms the upper end of the body in the working position. At least one first blade extends outwardly from the cylindrical body and has a lowermost cutting edge extending upwardly from its innermost portion at an angle of from about 2.degree. to about 60.degree. to a radial plane perpendicular to said longitudinal axis, and at least one second blade extends outwardly from the cylindrical body and has a lowermost cutting edge extending downwardly from its outermost portion at an angle of from about 2.degree. to about 60.degree. to a radial plane perpendicular to said longitudinal axis.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: January 26, 1993
    Assignee: Weatherford-Petco, Inc.
    Inventors: John D. Lindley, Colin R. Mackenzie, Mark E. Hall
  • Parting device
    Patent number: 4268948
    Abstract: A tool for forming parting grooves in a flat, plastically deformable workpiece, especially a continuously cast steel slab in a manner which seals the internal porosity of the slab in the regions which become exposed upon division, has a working portion in the form of a ridge which is most preferably in the form of a circumferential flange on a roll; and the cross-sectional shape of the ridge or flange is that of a highly convex tip between two gently convex side faces, and optionally, or essentially if either or both of the tip and the side faces are instead straight, the angle at which the side faces are mutually inclined is 20.degree. to 60.degree., the width of the tip is a given porportion of the thickness of the workpiece, and the width of the tip is specifically related to the said angle of inclination of the side faces. The height of the side faces, and their curvature and that of the tip, are also preferably within set limits.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: May 26, 1981
    Assignee: British Steel Corp.
    Inventors: Per O. Strandell, Erik M. Thorslund, Colin R. MacKenzie, Norman Smith