Patents by Inventor Andrew W. VanPutte

Andrew W. VanPutte 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 of cutting and sealing film
    Patent number: 6282869
    Abstract: In the packaging of a wide variety of products in flexible film bags, problems with edge tear and incomplete bag cut-off have been encountered. The edge tear and incomplete cut-off are worse for films containing low melting polymers, such as metallocene-catalyzed ethylene/alpha-olefin copolymers. These problems can be solved using a clamp-cut-seal process, as opposed to a clamp-seal-cut process. By cutting before sealing, the film is still cool, and the strain on the film due to the cutting does not pull on the seal area enough to cause edge tearing (i.e., tearing at the seal). The higher resistance to elongation of the cool, clamped film also serves to reduce or prevent incomplete bag tail cutoff. Also, by providing a means for sealing which clamps the film before it is cut, defective seals from bag “pull back” can be avoided.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: September 4, 2001
    Assignee: Cryovac, Inc.
    Inventors: Kyle B. Bullock, Robert D. All, Howard D. Connor, David W. Grams, Shawn D. Harris, Gregory E. McDonald, F. Ted Oakhill, Julian L. Pruitt, William Z. Snow, Andrew W. VanPutte, Jeffrey L. Walker, Jay B. Wilson, George D. Wofford
  • Multilayer structure for a package for scavenging oxygen
    Patent number: 5529833
    Abstract: Products and film structures using the oxygen scavengers, are disclosed. Such products demonstrate enhanced shelf stability of foodstuffs and reduced sensitivity to humidity and temperature changes.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: June 25, 1996
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Drew V. Speer, Charles R. Morgan, William P. Roberts, Andrew W. VanPutte
  • Multilayer structure for a package for scavenging oxygen
    Patent number: 5350622
    Abstract: Products and film structures using the oxygen scavengers, are disclosed. Such products demonstrate enhanced shelf stability of foodstuffs and reduced sensitivity to humidity and temperature changes.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: September 27, 1994
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Drew V. Speer, Charles R. Morgan, William P. Roberts, Andrew W. VanPutte