Patents by Inventor Jan De Kesel

Jan De Kesel 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: 6934487
    Abstract: Sealing film having a substantially longitudinal central strip to be torn out between a first end and a second end, whereby the central strip has a substantially constant width and a substantially longitudinal central axis, and whereby an end of the central strip adjacent to one end selected from the first end and the second end has a width which varies from the substantially constant width of the central strip to an end width lower to the substantially constant width of central strip.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: August 23, 2005
    Assignee: CF Technologies
    Inventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
  • Patent number: 6782220
    Abstract: Sealing member formed by a sealing film with a substantially longitudinal portion to be torn out, wherein the sealing film is connected to a pulling strip made of a layer, with fibers extending in a direction forming an angle between −60° and +60° with respect to the tearing direction of the longitudinal portion to be torn out.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: August 24, 2004
    Assignee: CF Technologies
    Inventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
  • Patent number: 6778793
    Abstract: A sealing film for a toner cartridge or container. The sealing film has a layer with a thickness of between 20 &mgr;m and 1 mm and has at least on substantially linear tearing direction. The layer also includes surface elements that extend in a direction that is different from the preferred tearing direction of the sealing film.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: August 17, 2004
    Assignee: CF Technologies
    Inventor: Jan de Kesel
  • Patent number: 6775493
    Abstract: The present invention provides a sealing film for a toner cartridge. The sealing film includes a layer with a preferred linear tearing direction. The layer is provided with longitudinal surface elements defining a strip to be torn out. The longitudinal surface elements extend in an inclined direction with respect to the strip to be torn out. The strip to be torn out includes a pulling means having a sufficient tearing resistance for preventing a separation between the pulling means and the strip to be torn out during a tearing operation.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: August 10, 2004
    Assignee: CF Technologies
    Inventors: Jan De Kesel, Alexander Van Betsbrugge
  • Patent number: 6760556
    Abstract: Sealing member for toner container having a tearable central strip and being associated with connecting elements ensuring the pressing of the lateral portions of a compressible cleaning element, with respect to the portion of the cleaning element intended for cleaning the torn central strip.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: July 6, 2004
    Assignee: CF Technologies
    Inventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
  • Publication number: 20040013444
    Abstract: Sealing member for toner container, said member with a tearable central strip being associated to a means ensuring the pressing of the lateral portions of a compressible cleaning element, with respect to the portion of the cleaning element intended for cleaning the torn central strip.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 22, 2004
    Applicant: CF Technologies
    Inventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
  • Publication number: 20030223770
    Abstract: Sealing member comprising a sealing film with a substantially longitudinal portion to be torn out, wherein the film is connected to a pulling means comprising at least a layer comprising fibres extending in a direction forming an angle comprised between −60° and +60° with respect to the tearing direction of the longitudinal portion to be torn.
    Type: Application
    Filed: February 27, 2003
    Publication date: December 4, 2003
    Applicant: CF Technologies
    Inventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
  • Publication number: 20030152399
    Abstract: Sealing film for toner cartridge, wherein said sealing film comprises a layer with a preferred linear tearing direction, said layer being provided with longitudinal surface elements defining there between the strip to be torn out,
    Type: Application
    Filed: October 22, 2002
    Publication date: August 14, 2003
    Applicant: CF Technologies
    Inventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
  • Publication number: 20030152398
    Abstract: Sealing film for toner cartridge, wherein said sealing film comprises a layer with a preferred linear tearing direction, said layer being provided with longitudinal surface elements defining there between the strip to be torn out, whereby said longitudinal surface elements extend in an inclined direction with respect to the linear tearing direction, in which the strip to be torn out is associated to a pulling means having a sufficient tearing resistance for preventing a separation between the pulling means and the strip to be torn out during a tearing operation.
    Type: Application
    Filed: March 26, 2002
    Publication date: August 14, 2003
    Applicant: CF Technologies
    Inventors: Jan De Kesel, Alexander Van Betsbrugge
  • Publication number: 20030152397
    Abstract: Sealing film for a toner cartridge or container, wherein said sealing film comprises a layer with a thickness comprised between 20 &mgr;m and 1mm and with at least one preferred substantially linear tearing direction, said layer being provided with surface elements extending in a direction different from the preferred tearing direction.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Applicant: CF Technologies
    Inventor: Jan De Kesel
  • Patent number: 6539187
    Abstract: Tearable sealing member for unsealably sealing an opening of a developer, said tearable member comprising a seal film for closing the opening and a tearing member, in which the seal film is provided with a means for controlling a minimum width of the strip to be torn out during at least its partial tearing.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: March 25, 2003
    Inventor: Jan De Kesel
  • Publication number: 20030012581
    Abstract: Tearable sealing member for unsealably sealing an opening of a developer, said tearable member comprising a seal film for closing the opening and a tearing member, in which the seal film is provided with a means for controlling a minimum width of the strip to be torn out during at least its partial tearing.
    Type: Application
    Filed: July 10, 2001
    Publication date: January 16, 2003
    Inventor: Jan De Kesel
  • Patent number: 5930559
    Abstract: A member for sealing a toner container for laser printer, copy machine and laser printer, comprising:a) a film with a central strip intended to be torn offb) a pulling member bound to the central strip; andc) a foam layer with a central passage, said layer having a first part covered by the film and a second part not covered by the film,in which the lateral strips of the film are glued on the foam layer, while the central strip of the film is not glued on the said foam layer.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: July 27, 1999
    Inventor: Jan De Kesel
  • Patent number: 5523828
    Abstract: A seal for a toner cartridge assembly used in printers, copy machines and facsimile machines. The seal is a strip which can be torn out so as to define an opening for the passage of toner. The strip has a structure which lowers the tearing force required when starting to tear the strip with respect to the tearing force required for tearing other parts of the seal, or the seal has a structure which increases the binding of parts of the seal adjacent to the strip on the cartridge.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: June 4, 1996
    Inventor: Jan De Kesel
  • Patent number: RE36920
    Abstract: A seal for a toner cartridge assembly used in printers, copy machines and facsimile machines. The seal is a strip which can be torn out so as to define an opening for the passage of toner. The strip has a structure which lowers the tearing force required when starting to tear the strip with respect to the tearing force required for other parts of the seal, or the seal has a structure which increases the binding of parts of the seal adjacent to the strip on the cartridge.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: October 17, 2000
    Inventor: Jan De Kesel