Patents by Inventor Dan Gilead

Dan Gilead 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).

  • Controllably and swiftly degradable polymer compositions and films and other products made therefrom
    Patent number: 4939194
    Abstract: Polymer compositions comprising a vinyl polymer and a combination of at least two metal complexes wherein the complexing agent of the first complex is attached to the metal through oxygen and the metal is a transition metal, and the complexing agent of the second complex is attached to the metal through sulphur and the metal is a transition metal or a metal of group II or IV of the periodic table of the elements, wherein the molar ratio of the second metal complex to the first metal complex is 0.5 or less. A film obtained from such polymer compositions and its use agricultural processes are also claimed.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: July 3, 1990
    Assignee: Plastopil Hazorea
    Inventors: Gerald Scott, Dan Gilead
  • Agricultural process using controllably degradable polymer composition film
    Patent number: 4519161
    Abstract: The invention relates to controllably degradable polymer compositions, especially suitable for making film products, comprising a vinyl polymer, and at least one first complex which is a non-ionic organosoluble antioxidant complex of a chain-breaking, peroxide-decomposing, metal ion deactivating or ultraviolet light stabilizing compound and of a metal such that the metal complex is a photoactivator and at least one second complex which is a non-ionic organosoluble ultraviolet light stabilizing complex of a metal such that the metal complex is a photostabilizer, the concentrations of the two complexes being co-ordinated to produce a desired embrittlement time for the composition.The first complex is an iron complex and the second a nickel complex or a cobalt complex.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: May 28, 1985
    Inventors: Dan Gilead, Gerald Scott
  • Controllably degradable polymer compositions
    Patent number: 4461853
    Abstract: The invention relates to controllably degradable polymer compositions, especially suitable for making film products, comprising a vinyl polymer, and at least one first complex which is a non-ionic organosoluble antioxidant complex of a chain-breaking, peroxide-decomposing, metal ion deactivating or ultraviolet light stabilizing compound and of a metal such that the metal complex is a photoactivator and at least one second complex which is a non-ionic organosoluble ultraviolet light stabilizing complex of a metal such that the metal complex is a photostabilizer, the concentrations of the two complexes being co-ordinated to produce a desired embrittlement time for the composition.The first complex is an iron complex and the second a nickel complex or a cobalt complex.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: July 24, 1984
    Inventors: Dan Gilead, Gerald Scott