Patents by Inventor Wladimir Janssen

Wladimir Janssen 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: 7845307
    Abstract: An efficient electrostatic spray installation that can spray a wide range of conductive materials effectively while creating very small droplets with conductivities in from about 7000 pico Siemens and greater. A compact system in which one, two or more parallel sprays can be obtained at close proximity in the order of 30 to 40 mm of each other in a compact package.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: December 7, 2010
    Inventor: Wladimir Janssen
  • Publication number: 20080067269
    Abstract: An efficient electrostatic spray installation that can spray a wide range of conductive materials effectively while creating very small droplets with conductivities in from about 7000 pico Siemens and greater. A compact system in which one, two or more parallel sprays can be obtained at close proximity in the order of 30 to 40 mm of each other in a compact package.
    Type: Application
    Filed: March 31, 2005
    Publication date: March 20, 2008
    Inventor: Wladimir Janssen
  • Publication number: 20050224200
    Abstract: The invention comprises a method to increase the water absorption of tissue paper towel products by incorporating super-absorbent polymers (SAP) in between the laminated tissue plies. The SAP is dosed in selected places in the tissue towel manufacturing process without the need to substantially change the current converting or manufacturing process, or the major equipment that is used or the properties of the base sheet tissue paper.
    Type: Application
    Filed: April 7, 2004
    Publication date: October 13, 2005
    Inventors: Robert Bouchard, Marc Desaulniers, Jose Castell, Vincent Landry, Wladimir Janssen
  • Patent number: 4399691
    Abstract: The shive analyzer is formed by a closed chamber having a conical outlet with a spherical segment forming a plug for the outlet and defining an annular slot. The relative position of the plug and the conical outlet are accurately adjustable and these elements are mounted for relative movement to open the slot from a preset adjusted position. The analyzer is adapted for continuous operation and is fed by a positive displacement pump that pumps pulp at a preset constant rate. A device senses a determined increase in the pressure and opens the slot by relative movement of the spherical segment relative to the conical outlet. Another device counts the number of times the predetermined pressure increase is reached within a preset period of time to provide an indication of the number of shives in the pulp.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: August 23, 1983
    Inventor: Wladimir Janssen
  • Patent number: 3979958
    Abstract: An apparatus is provided for determining the location of a liquid-liquid or a liquid-gas interface in tanks or cavities and has particular use in determining the position of the explosive collar level in boreholes charged with water gel explosives. The apparatus consists of a sensing element which may be lowered into a cavity. Air is exhausted from the sensing element into the surrounding medium. Any restriction to air flow caused by the surrounding medium causes an increase in air pressure which increase signals the presence of an interface.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: September 14, 1976
    Assignee: Canadian Industries, Ltd.
    Inventors: Wladimir Janssen, Harley Corey Prime