Patents Assigned to Griffin Corporation
  • Patent number: 6627132
    Abstract: A composition and method for forming plant containers, such as plant propagation trays providing control of plant root growth. The method includes applying to a sheet of thermoformable plastic an aqueous coating composition including between approximately 20% and 45% by weight non-delaminating acrylic latex, between approximately 8% and 30% by weight copper hydroxide, between approximately 2% and 20% by weight filler, and between approximately 0.5% and 5% by weight dispersant. The coating is dried and the plastic sheet is heated to a temperature sufficient to form the plastic. The plastic sheet is then formed into a desired shape.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: September 30, 2003
    Assignee: Griffin Corporation
    Inventors: Mark Allen Crawford, Hamid Ullah
  • Patent number: 5983558
    Abstract: There is disclosed an improved insect bait station and a method of treating insects with a toxicant. The improved insect bait station comprises a body member, the body member defining a bait area within the body member and an opening in the body member so that insects can enter the body member and feed on an attractant bait in the bait area. The insect bait station further comprises a toxicant applicator disposed in the body member, the toxicant applicator and the body member defining a passage of predetermined dimensions such that an insect which enters the body member or feeds on the bait therein contacts the toxicant applicator so that a toxicant substance is applied to the insect.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: November 16, 1999
    Assignee: Griffin Corporation
    Inventors: Allan S. Las, Joseph T. Mares
  • Patent number: 5824707
    Abstract: There is disclosed a method for improving the weight gain of swine. The invention also comprises a method of improving the feed conversion efficiency of swine. The improved method comprises administering orally to swine an effective amount of copper citrate and an amount of feed sufficient to produce weight gain in swine.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: October 20, 1998
    Assignee: Griffin Corporation
    Inventor: Gary B. Saxton
  • Patent number: 5665679
    Abstract: There is disclosed a method of desiccating potato vines. The method comprises applying to potato vines an effective amount of an aqueous solution of a copper-alkylenediamine complex, such as a copper-ethylenediamine complex.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: September 9, 1997
    Assignee: Griffin Corporation
    Inventor: Thomas Bond McInnes
  • Patent number: 5462738
    Abstract: There is disclosed a granular copper hydroxide dry flowable bactericide/fungicide having improved biological activity and a method for making and using same.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: October 31, 1995
    Assignee: Griffin Corporation
    Inventors: James H. LeFiles, Evelyn J. Taylor, Mark A. Crawford
  • Patent number: 5461027
    Abstract: Pendimethalin microencapsulated in a microcapsule comprised of a water-soluble film forming polymer. The present invention also includes a method of microencapsulating low-melting agriculturally active materials, such as pendimethalin. The microencapsulation process comprises the steps of heating pendimethalin to a molten state. The molten pendimethalin is then combined with an aqueous solution of a water-soluble, film-forming polymer at a temperature sufficient to maintain the pendimethalin in its molten state. The pendimethalin is then emulsified in the aqueous solution so that the pendimethalin has a primary particle size of between approximately 0.1 and 10 microns. The resulting dispersion or emulsion is then spray dried at a temperature between approximately 50.degree. C. and 220.degree. C. so as to microencapsulate the pendimethalin in the polymer. Compounds for promoting the rapid solidification of the pendimethalin am also disclosed.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: October 24, 1995
    Assignee: Griffin Corporation
    Inventor: Elliot Bergman
  • Patent number: 5459162
    Abstract: There is disclosed an improved composition and method for improving the weight gain of poultry. The improved method comprises administering orally to poultry an effective amount of copper citrate. The improved composition comprises a feed for the poultry and an effective amount of copper citrate.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: October 17, 1995
    Assignee: Griffin Corporation
    Inventor: Gary B. Saxton
  • Patent number: 5317004
    Abstract: Agriculturally active materials, such as pesticides, herbicides and the like and a process for microencapsulating said materials. The present invention includes trifluralin having a polymorphic form characterized by a yellow color and a melting point of approximately 41.degree.-43.degree. C. The present invention also includes a method of using the yellow polymorphic form of trifluralin as a herbicide. In addition, the present invention includes a method of microencapsulating low-melting agriculturally active materials, such as trifluralin. The microencapsulation process comprises the steps of heating a low-melting, water-immiscible, agriculturally active material to a molten state. The molten active material is then combined with an aqueous solution of a water-soluble, film-forming polymer at a temperature sufficient to maintain the active material in its molten state.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: May 31, 1994
    Assignee: Griffin Corporation
    Inventors: John Misselbrook, Larry J. McKinney, James H. Lefiles, Edwin F. Hoff, Jr., Elliot Bergman
  • Patent number: 5304771
    Abstract: Powder feed apparatus for providing a precise flow rate of fine powder for laser welding as well as other welding operations where such precise flow of fine powder is required. The powder is metered by means of at least one wheel rotatable within a housing and having a peripheral edge with at least one plurality of cavities in the peripheral edge. The cavities are substantially evenly spaced entirely about the wheel periphery and sized to hold substantially equal volumes. The peripheral edge has a close clearance with the housing whereby to entrap for delivery to the outlet discrete precise quantities exclusively of the powder in the cavities. A velocity feed-back controlled motor connected to the wheel is provided to precisely control the flow rate of the powder by precisely controlling the motor velocity.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: April 19, 1994
    Assignee: D. A. Griffin Corporation
    Inventors: Robert Griffin, James H. Downey, Frederick K. McGee
  • Patent number: 5298253
    Abstract: There is disclosed a granular copper hydroxide dry flowable bactericide/fungicide having improved biological activity and a method for making and using same.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: March 29, 1994
    Assignee: Griffin Corporation
    Inventors: James H. LeFiles, Evelyn J. Taylor, Mark A. Crawford
  • Patent number: 5160530
    Abstract: Agriculturally active materials, such as pesticides, herbicides and the like and a process for microencapsulating said materials. The present invention includes trifluralin having a polymorphic form characterized by a yellow color and a melting point of approximately 41.degree.-43.degree. C. The present invention also includes a method of using the yellow polymorphic form of trifluralin as a herbicide. In addition, the present invention includes a method of microencapsulating low-melting agriculturally active materials, such as trifluralin. The microencapsulation process comprises the steps of heating a low-melting, water-immiscible, agriculturally active material to a molten state. The molten active material is then combined with an aqueous soluion of a water-soluble, film-forming polymer at a temperature sufficient to maintain the active material in its molten state.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: November 3, 1992
    Assignee: Griffin Corporation
    Inventors: John Misselbrook, Edwin F. Hoff, Jr., Elliot Bergman, Larry J. McKinney, James H. LeFiles
  • Patent number: 5073191
    Abstract: Agriculturally active materials, such as pesticides, herbicides and the like and a process for microencapsulating said material. The present invention includes trifluralin having a polymorphic form characterized by a yellow color and a melting point of approximately 41.degree.-43.degree. C. The present invention also includes a method using the yellow polymorphic form of trifluralin as a herbicide. In addition, the present invention includes a method of microencapsulating low-melting agriculturally active materials, such as trifluralin. The microencapsulation process comprises the steps of heating a low-melting, water-immiscible, agriculturally active material to a molten state. The molten active material is then combined with an aqueous solution of a water-soluble, film-forming polymer at a temperature sufficient to maintain the active material in its molten state.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: December 17, 1991
    Assignee: Griffin Corporation
    Inventors: John Misselbrook, Edwin F. Hoff, Jr., Elliot Bergman, Larry J. McKinney, James H. Lefiles
  • Patent number: D366689
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: January 30, 1996
    Assignee: Griffin Corporation
    Inventors: Joseph T. Mares, Allan S. Las