Patents by Inventor Stig Cedergren

Stig Cedergren 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).

  • Patent number: 5164718
    Abstract: A locking system for locking and unlocking a container wherein the locking system is controlled via an electronically controlled code lock interacting with a control device. The code lock is pre-set in such a way that, for the purpose of locking, the code lock is arranged so as to be allocated a unique locking code for each individual occasion and, for the purpose of unlocking, is arranged to be allocated an unlocking code which differs from the locking code, which unlocking code is unique for each individual occasion. In the locking system, a pre-determined locking signal sequence is related to a pre-determined unlocking signal sequence, and, associated with the container, is an identification marking including an information carrier and a password associated with the signal sequence for unlocking the container.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: November 17, 1992
    Assignee: Global Security AB
    Inventor: Stig Cedergren
  • Patent number: 4273478
    Abstract: A lockable security container for the transportation of valuables and including means for damaging valuables positioned within the container comprising: a container including an internal space for positioning valuables, means for damaging the valuables positioned within said internal space including a housing positioned within said internal space for containing a dye; said housing including a plunger interposed between a charge of powder and said dye; said charge of power being operatively connected to said container to activate said charge when said container is subjected to unauthorized tampering, activation of said charge moves said plunger against said dye to uniformly spray said internal space and damage said valuables.
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: June 16, 1981
    Inventor: Stig Cedergren