Patents by Inventor Philip A. Sanborn, Jr.

Philip A. Sanborn, Jr. 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).

  • Method and apparatus for making a reclosable package
    Patent number: 4437293
    Abstract: A reclosable package, e.g. for food products, is made by sealing one side of a closure strip to a first thermoplastic sheet; enclosing a product between that first sheet and a second thermoplastic sheet with the closure strip inside the enclosure; and, sealing another side of the closure strip to the second sheet while the strip and product are so enclosed.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: March 20, 1984
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Philip A. Sanborn, Jr.
  • Reclosable package
    Patent number: 4246288
    Abstract: This invention relates to a reclosable package including a semi-rigid receptacle and a flexible cover and an interlocking rib and groove closure strip which allows the package to be reclosable.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: January 20, 1981
    Assignee: W. R. Grace & Co.
    Inventor: Philip A. Sanborn, Jr.
  • Method and apparatus for making a reclosable package
    Patent number: 4240241
    Abstract: A method and apparatus for making a reclosable package from a forming web, a covering web and a closure strip. The closure strip is indented at desired intervals and sealed at its lower surface to the forming web. A cavity is formed in the forming web after which a product is placed therein and covered with the covering web. After evacuating the space therebetween the covering and forming webs are sealed together with longitudinal and transverse seals which enclose the product and the closure strip. The upper surface of the closure strip is sealed to the covering web so that when the package is severed between the closure strip and an adjacent longitudinal seal, the closure strip may be opened for access to the product.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: December 23, 1980
    Assignee: W. R. Grace & Co.
    Inventor: Philip A. Sanborn, Jr.
  • Gas flushing or filling packaging machine
    Patent number: 4058953
    Abstract: A machine and method for evacuating sealed packages formed from flexible sheet material and for flushing or filling, as required, the evacuated package with an inert gas. The product enclosed within the package is preferably a food product such as luncheon meats, sausage, cheese, or the like. In constructing the package, one or more spaced apart apertures are formed in one sheet and a slit is formed in the other sheet so that preferably the slit will be on the opposite side of the package from the apertures. An initial peripheral seal is made between the two sheets to enclose the slit, apertures and product. The package is then evacuated through the slit with the sheets being separated and then the slit is sealed and gas introduced through the apertures, or, for a gas flushed package, the slit may be sealed after gas is introduced. Next the apertures are sealed thus forming a gas flushed or filled package.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: November 22, 1977
    Assignees: W. R. Grace & Co., Hooper, Inc.
    Inventors: Philip A. Sanborn, Jr., Shelby F. Westbrook, Donald A. Sullivan