Patents by Inventor Bjorn A. Johansson

Bjorn A. Johansson 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).

  • Publication number: 20250177884
    Abstract: Disclosed are chromatography systems employing a releasable coupling 100 for holding a fluid tubing to a spigot, the coupling comprising: a cylindrical inner component 110 for accepting a fluid tubing 30, said inner component including a resiliently deflectable portion 118 arranged to urge an outer surface of the tubing toward a spigot; and a cylindrical collar 130 having and internal through-aperture 132 for slideably accepting the inner component, the aperture and resilient portion having complementary surface formations which in a first position of the collar mounted to the inner component provide for said resilient deflection in use, and which in a second different position do not cause said deflection, the coupling being characterized in that the collar comprises a collar flange 134 extending outwardly away from the aperture of a size allowing manual manipulation of the collar between the first and second positions. Chromatography systems employing said couplings is disclosed also.
    Type: Application
    Filed: February 13, 2025
    Publication date: June 5, 2025
    Inventors: Mats Lundkvist, Bjorn A. Johansson, Tim Francois
  • Publication number: 20230102761
    Abstract: Disclosed are chromatography systems employing a releasable coupling 100 for holding a fluid tubing to a spigot, the coupling comprising: a cylindrical inner component 110 for accepting a fluid tubing 30, said inner component including a resiliently deflectable portion 118 arranged to urge an outer surface of the tubing toward a spigot; and a cylindrical collar 130 having and internal through-aperture 132 for slideably accepting the inner component, the aperture and resilient portion having complementary surface formations which in a first position of the collar mounted to the inner component provide for said resilient deflection in use, and which in a second different position do not cause said deflection, the coupling being characterized in that the collar comprises a collar flange 134 extending outwardly away from the aperture of a size allowing manual manipulation of the collar between the first and second positions. Chromatography systems employing said couplings is disclosed also.
    Type: Application
    Filed: October 17, 2022
    Publication date: March 30, 2023
    Inventors: Mats Lundkvist, Bjorn A. Johansson, Tim Francois
  • Patent number: 11547956
    Abstract: Disclosed are chromatography systems employing a releasable coupling (100) for holding a fluid tubing to a spigot, the coupling comprising: a cylindrical inner component (110) for accepting a fluid tubing (30), said inner component including a resiliently deflectable portion (118) arranged to urge an outer surface of the tubing toward a spigot; and a cylindrical collar (130) having and internal through-aperture (132) for slideably accepting the inner component, the aperture and resilient portion having complementary surface formations which in a first position of the collar mounted to the inner component provide for said resilient deflection in use, and which in a second different position do not cause said deflection, the coupling being characterized in that the collar comprises a collar flange (134) extending outwardly away from the aperture of a size allowing manual manipulation of the collar between the first and second positions. Chromatography systems employing said couplings is disclosed also.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: January 10, 2023
    Assignee: Cytiva Sweden AB
    Inventors: Mats Lundkvist, Bjorn A. Johansson, Tim Francois
  • Publication number: 20200206653
    Abstract: Disclosed are chromatography systems employing a releasable coupling (100) for holding a fluid tubing to a spigot, the coupling comprising: a cylindrical inner component (110) for accepting a fluid tubing (30), said inner component including a resiliently deflectable portion (118) arranged to urge an outer surface of the tubing toward a spigot; and a cylindrical collar (130) having and internal through-aperture (132) for slideably accepting the inner component, the aperture and resilient portion having complementary surface formations which in a first position of the collar mounted to the inner component provide for said resilient deflection in use, and which in a second different position do not cause said deflection, the coupling being characterized in that the collar comprises a collar flange (134) extending outwardly away from the aperture of a size allowing manual manipulation of the collar between the first and second positions. Chromatography systems employing said couplings is disclosed also.
    Type: Application
    Filed: June 28, 2018
    Publication date: July 2, 2020
    Inventors: Mats Lundkvist, Bjorn A. Johansson, Tim Francois
  • Patent number: 10261008
    Abstract: The present invention relates to a method for manufacturing a device for holding a light guide, for use in a flow cell, with the steps of providing a light guide holder having a first end and a second end connected by a longitudinal through hole with a narrow portion at the first end having a first diameter and a wide portion at the second end having a second diameter, the first diameter being smaller than the second diameter, and the narrow portion and wide portion being connected by a tapering portion, inserting a light guide into the through hole so that a first end of the light guide extends from the first end to the second end of the light guide holder, inserting a substance into at least part of the wide portion of the through hole, Inserting a tube between the light guide and the light guide holder, and fix the light guide in relation to the holder by means of the substance. The invention also relates to a device for holding a light guide.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: April 16, 2019
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Henrik Svanberg, Bjorn A. Johansson
  • Publication number: 20180088026
    Abstract: The present invention relates to a method for manufacturing a device for holding a light guide, for use in a flow cell, with the steps of providing a light guide holder having a first end and a second end connected by a longitudinal through hole with a narrow portion at the first end having a first diameter and a wide portion at the second end having a second diameter, the first diameter being smaller than the second diameter, and the narrow portion and wide portion being connected by a tapering portion, inserting a light guide into the through hole so that a first end of the light guide extends from the first end to the second end of the light guide holder,inserting a substance into at least part of the wide portion of the through hole,Inserting a tube between the light guide and the light guide holder, and fix the light guide in relation to the holder by means of the substance. The invention also relates to a device for holding a light guide.
    Type: Application
    Filed: April 8, 2016
    Publication date: March 29, 2018
    Inventors: Henrik Svanberg, Bjorn A. Johansson
  • Publication number: 20130068095
    Abstract: A sanitary piston head with a body, said piston head having a fluid-contact end and a drive end and comprising a resilient sealing skirt arranged to provide sealing abutment against the inner wall of a cylinder when said piston head is inserted in said cylinder, wherein the resilient sealing skirt is biased in the sealing direction by a radially biasing element.
    Type: Application
    Filed: May 24, 2011
    Publication date: March 21, 2013
    Applicant: GE HEALTHCARE BIO-SCIENCES AB
    Inventors: Bjorn A. Johansson, Patrik Akerstrom
  • Patent number: 7896310
    Abstract: A pinch valve is adapted to hold at least one flexible tube in a tube holding room (7) and comprises a plunger (13) adapted to protrude into the tube holding room and pinch the tube against an opposite side wall (11) thereof. The plunger (13) is controllable to be positioned in at least two different positions, an open position where the tube in the tube holding room (7) is not pinched, and a pinching position where the tube is pinched between the plunger (13) and the opposing wall (11). The pinch valve further comprises a tube retaining means (19) adapted to prevent the tube from escaping from the tube holding room (7), especially when the plunger (13) is in the open position, and which can be pivoted into at least two different positions, a non locking position used during insertion of a tube into the tube holding room (7), and a locking position for retaining a tube inside the tube holding room (7) even when the plunger is in an open position.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: March 1, 2011
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Bjorn A. Johansson, Roger Lundqvist, Dan Hermansson
  • Publication number: 20100120596
    Abstract: A separation device adapted for separation of a wanted end product from a sample by centrifugation. According to the invention the device comprises: a first, a second and a third compartment; a first fluid connection between the first and second compartments, arranged to be opened and closed by first closing means; a second fluid connection between the second and the third compartments, arranged to be opened and closed by second closing means. The separation device is adapted to be subjected to centrifugation after having been filled with a first density gradient medium in the first compartment, sample in the third compartment and a second density gradient medium or sample in the second compartment, whereby after centrifugation the wanted end product will settle in the second compartment and the first fluid connection and the second fluid connection will be closed by the first closing means and the second closing means respectively.
    Type: Application
    Filed: May 8, 2008
    Publication date: May 13, 2010
    Applicant: GE HEALTHCARE BIO-SCIENCES AB
    Inventors: Gunnar Froman, Lars Haneskog, Bjorn A. Johansson, Henrik Ostlin
  • Publication number: 20080135115
    Abstract: A pinch valve is adapted to hold at least one flexible tube in a tube holding room (7) and comprises a plunger (13) adapted to protrude into the tube holding room and pinch the tube against an opposite side wall (11) thereof The plunger (13) is controllable to be positioned in at least two different positions, an open position where the tube in the tube holding room (7) is not pinched, and a pinching position where the tube is pinched between the plunger (13) and the opposing wall (11). The pinch valve further comprises a tube retaining means (19) adapted to prevent the tube from escaping from the tube holding room (7), especially when the plunger (13) is in the open position, and which can be pivoted into at least two different positions, a non locking position used during insertion of a tube into the tube holding room (7), and a locking position for retaining a tube inside the tube holding room (7) even when the plunger is in an open position.
    Type: Application
    Filed: December 10, 2007
    Publication date: June 12, 2008
    Applicant: GE HEALTHCARE BIO-SCIENCES AB
    Inventors: BJORN A. JOHANSSON, ROGER LUNDQVIST, DAN HERMANSSON
  • Patent number: D595423
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: June 30, 2009
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Bjorn A. Johansson, Nils Norrman, Henrik Ostlin, Sven Wounder
  • Patent number: D705444
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: May 20, 2014
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Stefan D'Argy, Bjorn A. Johansson, Nils Norrman, David Gwyn Treharne, Stevan Paul Tortorella
  • Patent number: D709210
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: July 15, 2014
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Stefan D'Argy, Bjorn A. Johansson, Nils Norrman, David Gwyn Treharne, Stevan Paul Tortorella
  • Patent number: D886994
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 9, 2020
    Assignee: GE HEALTHCARE BIO-SCIENCES AB
    Inventors: Mats Lundkvist, Bjorn A. Johansson, Tim Francois
  • Patent number: D886995
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 9, 2020
    Assignee: GE HEALTHCARE BIO-SCIENCES AB
    Inventors: Mats Lundkvist, Bjorn A. Johansson, Tim Francois