Patents by Inventor John J. Allan

John J. Allan 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).

  • Nonwoven webs made from ionomers
    Patent number: 5409765
    Abstract: A process is disclosed for extruding fibers from ionomer resins that are not blended with polyolefins, monomers, solvents, or other conventional compounds typically used in connection with processing fibers that contain ionomers. The preferred ionomers are 90% neutralized metal salts of copolymers of from at least about 60 to 90% ethylene and from at least about 10 to 40% acrylic acid. Multivalent metal cations can be used to introduce cross linking for control of the solubility and swellability of the fibers. The fibers and webs produced therefrom can be produced by meltblowing and can be used to provide a less expensive alternative to superabsorbent powders.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: April 25, 1995
    Assignee: Fiberweb North America, Inc.
    Inventors: Jeffrey J. Boettcher, John J. Allan, Leon Katz
  • Polyether polyester surfactants, their production and uses
    Patent number: 4268410
    Abstract: Surfactants of a defined formula, typically prepared by reacting an alkoxylated hexitol fatty acid ester with a di- or tri-basic acid to induce a low degree of polymerization. The surfactants exhibit a higher viscosity in aqueous solution and in admixture with other conventional surfactants than the unpolymerized material.
    Type: Grant
    Filed: July 17, 1979
    Date of Patent: May 19, 1981
    Assignee: Honeywill-Atlas Limited
    Inventors: John J. Allan, Richard G. Foster, Paul L. Leversidge