Patents by Inventor Richard Littmann

Richard Littmann 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).

  • Non-wax packaging film
    Patent number: 6528134
    Abstract: Non-wax film structures having three layers wherein the first skin layer comprises a polymer or blend of polymers and a hydrogenated aliphatic hydrocarbon additive; a second core layer comprises a polymer or a blend of polymers, a hydrogenated aliphatic hydrocarbon additive and regrind material; and a third sealant layer comprises a polymer or blend of polymers and a cheese release agent are disclosed. The film structures are useful in the packaging of food products, especially cheese.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: March 4, 2003
    Assignee: Pechiney Emballage Flexible Europe
    Inventors: Duane H. Buelow, Jay D. Hodson, Chad Perre, Richard Littmann
  • Packages with controlled easy-open features
    Patent number: 5878549
    Abstract: An easy open tear control package, preferably a pouch, from a film of polymeric barrier material is disclosed. Methods and films for making of such packages are also disclosed. The easy open tear control feature arises from roughening portions of the outer or inner surface of the films, prior to fabricating into the package. The roughened portion is on one face or on each face of the package and is at least a full width of a seal when the film is made into the package. The roughened portion can extend the entire width of the package and can be of any desired length.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: March 9, 1999
    Assignee: American National Can Company
    Inventors: Richard Littmann, Ulrich Weingartner, Thomas S. Wildenberg, Jerry Jesse, Deane E. Galloway
  • Packages with controlled easy open features
    Patent number: 5512337
    Abstract: An easy open tear control package, preferably a pouch, from a film of polymeric barrier material is disclosed. Methods and films for making of such packages are also disclosed. The easy open tear control feature arises from roughening portions of the outer or inner surface of the films, prior to fabricating into the package. The roughened portion is on one face or on each face of the package and is at least a full width of a seal when the film is made into the package. The roughened portion can extend the entire width of the package and can be of any desired length.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: April 30, 1996
    Assignee: American National Can Company
    Inventors: Richard Littmann, Ulrich Weingartner, Thomas S. Wildenberg, Jerry Jesse, Deane E. Galloway
  • Laser scored package
    Patent number: 5229180
    Abstract: A structure for use in making an easy open package comprises a thermoplastic sheet material. The sheet material has a strip of reflective metal on one surface. Over the metal strip on the opposite surface of the sheet material is a score line. The score line may be formed by a laser. The metal strip reflects the laser and provides a score line of more uniform depth and also provides barrier properties in the area of the score line.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: July 20, 1993
    Assignee: American National Can Company
    Inventor: Richard Littmann