Patents by Inventor Philip C. White

Philip C. White 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: 4268531
    Abstract: A packaging material, and especially condiment-carrying packages prepared therefrom, which is characterized by its thinness and consequent ease of handling. Moreover, condiments packaged therein have greatly extended storage life. In general, the package comprises using a relatively thin coating formed of an ionomer and a polyethylene of relatively low softening point, this coating conveniently being coextruded and incorporated into a laminated structure which will normally also comprise layers of cellophane and aluminum foil.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: May 19, 1981
    Assignee: Ludlow Corporation
    Inventor: Philip C. Whiting, Jr.
  • Patent number: 4263080
    Abstract: A thinner, less-expensive-to-produce, and more easily handled, opaque sheet is formed by coextrusion of two polymeric layers containing relatively low loadings of black pigment around a third layer of polymer which is pigmented at levels higher than would be practical using conventional extrusion processes, rather than a coextrusion procedure. The sheet is an improved product for use in packaging photographic film or like products to be protected from light.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: April 21, 1981
    Assignee: Ludlow Corporation
    Inventor: Philip C. Whiting, Jr.
  • Patent number: 4174038
    Abstract: A thinner, less-expensive-to produce, and more easily handled, opaque sheet is formed by coextrusion of two polymeric layers containing relatively low loadings of black pigment around a third layer of polymer which is pigmented at levels higher than would be practical using conventional extrusion processes, rather than a coextrusion procedure. The sheet is an improved product for use in packaging photographic film or like products to be protected from light.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: November 13, 1979
    Assignee: Ludlow Corporation
    Inventor: Philip C. Whiting, Jr.
  • Patent number: 3992234
    Abstract: An etching bath for printing plates of magnesium or alloys thereof comprising: aqueous nitric acid; a sulfated fatty acid ester; a first saturated or olefinically unsaturated carboxylic acid which comprises a hydroxy-unsubstituted monocarboxylic acid of from 2 to 6 carbon atoms, or a polycarboxylic or hydroxy substituted monocarboxylic acid of from 2 to 8 carbon atoms; a polyhydric alcohol of from 2 to 10 carbon atoms or an ether derivative thereof; a second saturated or olefinically unsaturated carboxylic acid which comprises at least one hydroxy-unsubstituted monocarboxylic acid of from 8 to 24 carbon atoms; and an alkylarylsulfonate. A concentrated additive comprising all of the foregoing bath ingredients except the aqueous nitric acid, to which water and nitric acid are added to provide a powderless etching bath. A method for etching printing plates of magnesium or alloys thereof using the foregoing bath formulation.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: November 16, 1976
    Assignee: The Dow Chemical Company
    Inventors: Marvin H. Fishaber, Philip C. White