Patents by Inventor Michael Schwertfeger

Michael Schwertfeger 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).

  • Double sided adhesive tape for sealing and opening cartons or cartonlike packages
    Patent number: 6689244
    Abstract: Method of using a double sided adhesive tape for sealing and opening cartons or cartonlike packages, at least one of the two films of adhesive being provided with a nontacky covering, which for sticking the adhesive tape between overlapping plies or flaps is removed partially from the adhesive layer, the bonding of the adhesive tape between the overlapping plies or flaps of the carton or of the cartonlike package taking place in such a way that the part of the covering which has not been removed from the film of adhesive is likewise situated between the overlapping plies or flaps.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: February 10, 2004
    Assignee: tesa AG
    Inventor: Michael Schwertfeger
  • Double sided adhesive tape for sealing and opening cartons or cartonlike packages
    Publication number: 20030041964
    Abstract: Method of using a double sided adhesive tape for sealing and opening cartons or cartonlike packages, at least one of the two films of adhesive being provided with a nontacky covering, which for sticking the adhesive tape between two plies or flaps is removed partially from the adhesive layer, the bonding of the adhesive tape between the two plies or flaps of the carton or of the cartonlike package taking place in such a way that the part of the covering which has not been removed from the film of adhesive is likewise situated between the two plies or flaps.
    Type: Application
    Filed: May 23, 2002
    Publication date: March 6, 2003
    Inventor: Michael Schwertfeger