Patents by Inventor Harold Leonard Jackson

Harold Leonard Jackson 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).

  • Patent number: 4065259
    Abstract: Fluorocarbon dye dispersion comprising an organic disperse dye; a certain normally liquid fluorocarbon having a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of not greater than 7.0 and a critical temperature of at least 135.degree. C., and, optionally, an effective amount of a compound having both surface activity and solubility in the normally liquid fluorocarbon, said dye dispersion being useful in the exhaust dyeing of disperse dyeable synthetic polymers, in the form of films, fibers or fabrics, by the process comprising contacting the polymer with the dye disperson at a temperature above the glass transition temperature of the polymer for a sufficient time to exhaust the dye onto the polymer.
    Type: Grant
    Filed: April 23, 1976
    Date of Patent: December 27, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold Leonard Jackson
  • Patent number: 3958934
    Abstract: Process wherein an organic disperse dye is applied, for example, to a synthetic organic polymer in the form of a film or textile fabric, for example, a polyethylene terephthalate fabric, by printing, spraying or padding and the dye-containing film or fabric is then passed through a fluorocarbon fluid at atmospheric pressure and at a temperature greater than the glass transition temperature of the polymer, said fluorocarbon having a boiling temperature of at least 125.degree.C., a fluorine to carbon atom ratio of at least 1.5 and a solubility parameter of not greater than 7.0, preferably 6.5 or less, for example, a fluorocarbon of the formula F[CF(CF.sub.3)CF.sub.2 O].sub.n CHFCF.sub.3 wherein n is at least 3.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: May 25, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold Leonard Jackson