Patents Represented by Law Firm Dunlap, Codding & Peterson
  • Drilling rig with hoist transportable by a vehicle
    Patent number: 4767100
    Abstract: An improved drilling rig which is mounted on a trailer to be transported from one location to another. The drilling rig includes a hoist for raising and lowering equipment, the hoist including hydraulic cylinders and a pair of cables. One end of each cable is connected to a base and the opposite end of each cable forms an equipment end portion which is connectable to the equipment to be raised and lowered, a portion of each cable being moveably connectable to a portion of the hydraulic cylinders. Portions of the hydraulic cylinders are moveable to raised and lowered positions for raising and lowering the equipment end portions of the cable and the equipment connected thereto.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: August 30, 1988
    Inventor: Gearld Philpot
  • Milking system
    Patent number: 4763605
    Abstract: A milking system for cows having a pair of parallel rows of milking stalls on an upper floor and an operator's cart adapted to move along the rows of stalls on a lower floor. An elongated opening is formed in the upper floor along the stalls through which one or more operators on the operator's cart may have access to the udder and teats of the cows to be milked. The stalls are provided with entry and exit gates; doors are provided for the elongated opening; spray bars are provided for cleaning and disinfecting the cows udders and teats; and suitable milking machines are provided for connection by the operators.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: August 16, 1988
    Inventor: William H. Braum
  • Streptokinase-coding recombinant vectors
    Patent number: 4764469
    Abstract: A recombinant vector adapted for transformation of a suitable bacterial microorganism host to produce and secrete streptokinase. The recombinant vector comprises a plasmid into which a polydeoxyribonucleotide fragment from Streptococcus equisimilis H46A which codes for streptokinase synthesis and secretion has been inserted. The transformant bacterial microorganism including this recombinant plasmid vector produces streptokinase suitable for clinical fibrinolytic usage after purification.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: August 16, 1988
    Assignee: Board of Regents for the University of Oklahoma
    Inventors: Joseph J. Ferretti, Horst Malke
  • Heat pen
    Patent number: 4758846
    Abstract: A heat pen comprising a first tube, a holder tube coiled with resistance wire and a metallic cylinder as a stylus. When the resistance wire is charged with electricity the metallic cylinder is heated to mark heat-sensitive recording paper. When the metallic cylinder is worn down by extensive usage, it is readily removed and replaced by a fresh metallic cylinder.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: July 19, 1988
    Assignee: Regents for the University of Oklahoma
    Inventor: Richard L. Watkins
  • Rotating head
    Patent number: 4745970
    Abstract: An improved rotating head having an inner barrel disposed within and rotatingly supported on an outer barrel wherein a rotary drive member is connected to the inner barrel. A kelly is extendable through the inner barrel and the rotary drive member is adapted to grippingly and sealingly engage the kelly so that rotation of the kelly causes rotation of the rotary drive member and the inner barrel connected thereto, the engagement between the rotary drive member and the kelly providing the sole source for rotating the rotary drive member and the inner barrel connected thereto. The rotary head also includes a bearing adjustment assembly which facilitates the rotatability of the inner barrel.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: May 24, 1988
    Assignee: Arkoma Machine Shop
    Inventors: Robert M. Bearden, W. A. Haynes
  • Method for selectively plugging the more permeable regions of an underground formation having non-uniform permeability
    Patent number: 4745976
    Abstract: A method for selectively plugging the more permeable regions of an underground formation having non-uniform permeability wherein a first surfactant solution is injected into the formation in an amount effective to contact a substantial portion of the surface area of the highly permeable regions of the formation, which first surfactant solution is characterized as having a selected chromatographic velocity and as being capable of reversibly adsorbing onto the surface of the pores of the formation.After injecting the first surfactant solution, a water-soluble spacer fluid is injected in an amount sufficient to place the first surfactant solution a selected distant into the formation, the spacer fluid being characterized as having a pre-injection viscosity about equal to the first surfactant solution.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: May 24, 1988
    Assignee: Board of Regents for the University of Oklahoma
    Inventors: Jeffrey H. Harwell, John F. Scamehorn
  • Tedanolide
    Patent number: 4743695
    Abstract: A compound having cytotoxic activity of the formula: ##STR1## and a composition comprising such compound in a suitable pharmaceutical carrier.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: May 10, 1988
    Assignee: The Board of Regents for the University of Oklahoma
    Inventors: Francis J. Schmitz, Sarath P. Gunasekera, M. Bilayet Hossain, Dick van der Helm, Gopichand Yalamanchili
  • Cover forming apparatus
    Patent number: 4733521
    Abstract: A cover forming apparatus for forming a sheet of material about an object to produce a decorative cover for the object. The cover forming apparatus includes a cover former having an object opening formed through a portion thereof which is adapted to receive the object. The cover former includes portions forming resilient contactors which are adapted to resiliently engage portions of the sheet of material for pressing the engaged portions of the sheet of material against the object when the sheet of material and the object are passed through the object opening. The cover forming apparatus particularly is useful for forming the sheet of material about flower pots to form a decorative flower pot cover.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: March 29, 1988
    Assignee: Highland Supply Corporation
    Inventors: Donald E. Weder, Erwin H. Weder, Herbert A. Weder, Franklin J. Craig
  • Brush roller attachment repair kit member and method of repairing a vacuum cleaner
    Patent number: 4720892
    Abstract: The invention concerns a repair kit for vacuum cleaners, and a method of repairing a vacuum cleaner, in which a vacuum cleaner housing with a worn or damaged keyway for a keying member on a brush roller is reconditioned by removing the portion of the housing with a worn keyway and substituting a U-shaped member which provides a new keyway as well as retaining slots for spring detent members. The cap member of the brush roller is provided with a keying member as well as a spring member with spring detent members.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: January 26, 1988
    Inventors: Winfred C. Parker, Randy L. Parker
  • Novelty winter golf ball
    Patent number: D294845
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: March 22, 1988
    Inventor: George M. Colclasure
  • Novelty golf ball
    Patent number: D294846
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: March 22, 1988
    Inventor: George M. Colclasure
  • Novelty golf ball
    Patent number: D294847
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: March 22, 1988
    Inventor: George M. Colclasure
  • Quilt
    Patent number: D295008
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: April 5, 1988
    Assignee: Creature Comforts, Inc.
    Inventors: Elizabeth A. Codding, Sarah E. Pansza, Rosemary K. Pitt, Michelle M. Giffey
  • Commemorative wall plaque
    Patent number: D295389
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: April 26, 1988
    Inventors: Gregory J. Maddox, R. J. Maddox
  • Commemorative wall plaque
    Patent number: D295390
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: April 26, 1988
    Inventors: Gregory J. Maddox, R. J. Maddox
  • Commemorative wall plaque
    Patent number: D295391
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: April 26, 1988
    Inventors: Gregory J. Maddox, R. J. Maddox
  • Novelty golf ball figure
    Patent number: D295653
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: May 10, 1988
    Inventor: George M. Colclasure
  • Florist foil or similar article
    Patent number: D296391
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: June 28, 1988
    Assignee: Highland Supply Corporation
    Inventor: Dona L. Abbott
  • Flower pot cover
    Patent number: D296535
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: July 5, 1988
    Assignee: Highland Supply Corporation
    Inventors: Donald E. Weder, Erwin H. Weder, Robert C. Abrams
  • Flower pot cover
    Patent number: D297422
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: August 30, 1988
    Assignee: Highland Supply Corporation
    Inventors: Donald E. Weder, Erwin H. Weder, Robert C. Abrams