Patents by Inventor Dave Allen

Dave Allen 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).

  • Flushable poly(ethylene oxide) films with balanced mechanical properties
    Publication number: 20010003613
    Abstract: Flushable film compositions and methods of making flushable film compositions are disclosed. The film compositions comprise poly(ethylene oxide). The modification of the poly(ethylene oxide) can be accomplished by grafting polar vinyl monomers, such as poly(ethylene glycol) methacrylate and 2-hydroxyethyl methacrylate, onto poly(ethylene oxide). The modified poly(ethylene oxide) has improved melt processability and is used to melt process thin poly(ethylene oxide) films of less than 5 mils in thickness. Films can be produced that have balanced mechanical properties and that are water-dispersible and flushable.
    Type: Application
    Filed: January 12, 2001
    Publication date: June 14, 2001
    Inventors: James Hongxue Wang, David Michael Schertz, Dave Allen Soerens
  • Uniformly expandable multi-channel pipettor
    Patent number: 6235244
    Abstract: A pipetting system having a plurality of tip fittings whose spacing can be simultaneously, quickly, and accurately adjusted so that the spacing between each adjacent tip fitting is substantially identical. The tip fittings are attached one to another by a linkage such as a pantographic linkage. The spacing is limited by an adjustable, slidable stop. Uniformly increasing and decreasing the spacing is accomplished by pulling and pushing a rod attached to one tip fitting.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: May 22, 2001
    Assignee: Matrix Technologies Corp.
    Inventors: Dave Allen, Robert H. Zier, George P. Kalmakis, Victor A. Torti, Gary E. Nelson
  • Grafted poly(ethylene oxide) compositions
    Patent number: 6172177
    Abstract: Modifyied poly(ethylene oxide) compositions are disclosed. The poly(ethylene oxide) compositions have improved melt processability and properties and can be used to thermally process articles which have improved properties over articles similarly processed from unmodified poly(ethylene oxide) compositions.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: January 9, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Hongxue Wang, David Michael Schertz, Dave Allen Soerens
  • Water-responsive, biodegradable film compositions comprising polylactide and polyvinyl alcohol, and a method for making the films
    Patent number: 6075118
    Abstract: The present invention is a water-responsive film. More particularly, the present invention is a film comprising a blend of a polyvinyl alcohol and a polylactide and a method of making such films. In a preferred embodiment, the invention is a film comprising a blend of polyvinyl alcohol and modified polylactide and a method of making such films. The films are useful as a component in flushable and degradable articles.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: June 13, 2000
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Hongxue Wang, David Michael Schertz, Dave Allen Soerens
  • Water-responsive, biodegradable fibers comprising polylactide modified polylactide and polyvinyl alcohol, and method for making the fibers
    Patent number: 5945480
    Abstract: The present invention is a water-responsive fiber. More particularly, the present invention is a fiber comprising a blend of a polyvinyl alcohol and a polylactide and a method of making such fibers. In a preferred embodiment, the invention is a fiber comprising a blend of polyvinyl alcohol and modified polylactide and a method of making such fibers. The fibers are useful as a component in flushable and degradable articles.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: August 31, 1999
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Hongxue Wang, David Michael Schertz, Dave Allen Soerens, Hannong Rhim
  • Water-shrinkable film
    Patent number: 5641562
    Abstract: Disclosed is a water-shrinkable film prepared from a composition comprising an elastomeric polymer and a water-dispersible polymer. Also disclosed is a disposable absorbent product, intended for the absorption of body fluids, including the film. The film is useful in imparting improved water-shrinkability properties to the disposable absorbent product.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: June 24, 1997
    Assignee: Kimberly-Clark Worldwide Inc.
    Inventors: Jennifer Cappel Larson, Dave Allen Soerens