Patents by Inventor Kjell Backstrom

Kjell Backstrom 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: 6932962
    Abstract: Aerosol formulations suitable for use in pressurised metered dose inhalers comprise a hydrofluoroalkane propellant, an medicament for inhalation and a surfactant which is a a C8–C16 fatty acid or salt thereof, a bile salt, a phospholipid, or an alkyl saccharide.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: August 23, 2005
    Assignee: AstraZeneca AB
    Inventors: Kjell Bäckström, Magnus Dahlbäck, Ann Johansson, Göran Källstrand, Elisabet Lindqvist
  • Publication number: 20030064928
    Abstract: The present invention relates to compositions and methods for pulmonary administration of full-length parathyroid hormone to mammalian hosts for the treatment of osteoporosis. Thus there is provided a therapeutic preparation comprising a human full-length parathyroid hormone, or homologues thereof, in the form of a dry powder suitable for inhalation in which at least 50% of said dry powder consists of (a) particles having a diameter of up to 10 microns; or (b) agglomerates, of such particles.
    Type: Application
    Filed: August 19, 2002
    Publication date: April 3, 2003
    Applicant: Astra Aktiebolag, a Sweden corporation
    Inventors: Kjell Backstrom, Bjorn Wallmark, Magnus Dahlback, Peter Edman, Ann Johansson
  • Patent number: 6524557
    Abstract: A pharmaceutical aerosol formulation comprising (a) a HFA propellant; (b) a pharmaceutically active polypeptide dispersible in the propellant; and (c) a surfactant which is a C8-C16 fatty acid or salt thereof, a bile salt, a phospholipid, or an alkyl saccharide, which surfactant enhances the systemic absorption of the polypeptide in the lower respiratory tract. The invention also relates to methods of manufacturing such formulations and the use of such formulations in treating patients.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: February 25, 2003
    Assignee: AstraZeneca AB
    Inventors: Kjell Bäckström, Magnus Dahlbäck, Ann Johansson, Göran Källstrand, Elisabet Lindqvist
  • Publication number: 20020115588
    Abstract: The present invention relates to compositions and methods for pulmonary administration of full-length parathyroid hormone to mammalian hosts for the treatment of osteoporosis. Thus there is provided a therapeutic preparation comprising a human full-length parathyroid hormone, or homologues thereof, in the form of a dry powder suitable for inhalation in which at least 50% of said dry powder consists of (a) particles having a diameter of up to 10 microns; or (b) agglomerates of such particles.
    Type: Application
    Filed: August 26, 1999
    Publication date: August 22, 2002
    Inventors: KJELL BACKSTROM, BJORN WALLMARK, MAGNUS DAHLBACK, PETER EDMAN, ANN JOHANSSON
  • Patent number: 6436902
    Abstract: The present invention relates to compositions and methods for pulmonary administration of full-length parathyroid hormone to mamnmalian hosts for the treatment of osteoporosis. Thus there is provided a therapeutic preparation comprising a human full-length parathyroid hormone, or homologues thereof, in the form of a dry powder suitable for inhalation in which at least 50% of said dry powder consists of (a) particles having a diameter of up to 10 microns; or (b) agglomerates of such particles.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: August 20, 2002
    Assignee: AstraZeneca AB
    Inventors: Kjell Bäckström, Björn Wallmark, Magnus Dahlbäck, Peter Edman, Ann Johansson
  • Patent number: 6102035
    Abstract: A single-use, disposable inhaler comprising: (1) a housing open at both ends, one end forming an air inlet and the other forming an air outlet, thereby defining an air flow path through the inhaler; and (2) an internal plate spaced above and below the housing, oriented parallel to the axis of the inhaler and parallel to the air flow path. The internal plate comprises a storage cavity formed therein, located near the air inlet, in which a single dose of a pharmaceutically active compound is placed. An individual using the inhaler inhales through the air inlet, creating an air stream which lifts the powder out of the storage cavity, into the air stream, and to the user.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: August 15, 2000
    Assignee: Astra Aktiebolag
    Inventors: Lars Asking, Kjell Backstrom, Henri Hansson, Magnus Jahnsson, Richard Lindahl
  • Patent number: 6004574
    Abstract: A powder formulation for the administration of medically useful polypeptides, comprising a medically useful polypeptide with melezitose as diluent.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: December 21, 1999
    Assignee: Astra Aktiebolag
    Inventors: Kjell Backstrom, Ann Johansson, Helena Linden
  • Patent number: 5918594
    Abstract: An inhalation device comprising means for breaking down aggregates of finely divided powdered medicament to provide medicament having a large number of particles within the respiratory range (less than 10 .mu.m). The deaggregation means comprise at least two pairs of opposing surfaces in a gas/air flow path. The first pair define an inlet to a constricted region in the air flow path, and the second pair are located at or near the outlet of the constriction. The two pairs of surfaces are oriented at different angles with respect to the axis of the air flow path. In use, medicament particles carried by the gas/air flow impact the first pair of surfaces, then enter the constricted region where the speed of the gas/air flow is increased, and then impact the second pair of surfaces. The impacts break down agglomerations of the finely divided medicament, thereby delivering to the user a greater number of particles in the respiratory range.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: July 6, 1999
    Assignee: Astra Aktiebolag
    Inventors: Lars Asking, Kjell Backstrom, Henri Hansson, Magnus Jahnsson