Patents Assigned to Lejus Medical Aktiebolag
  • Patent number: 5019399
    Abstract: The present invention relates to a granular product, whereby it consists of a solid product, which has been provided with a coating of a water-soluble material, which has been provided as a melt, whereby the water-soluble products consists of one or more of polyethylene glycol, xylitol, sorbitol, lactitol, lecitin, and other water-soluble products, as well as a process for preparing the granular product.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: May 28, 1991
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Ulf A. Odda
  • Patent number: 5013868
    Abstract: The present invention relates to a process for treating amphoteric amino acids, and/or amphoteric amino acid derivatives in a fluid bed, whereby in order to maintain fluidizing conditions one adds at least 0.2% by weight of a fatty acid, fatty alcohol and/or fat, preferably containing 14.degree.-20.degree. C.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: May 7, 1991
    Assignee: Lejus Medical Aktiebolag
    Inventor: Eva C. Eskilsson
  • Patent number: 4981695
    Abstract: The present invention relates to a multiple-unit-dose comprising L-dopa as pharmaceutically active compound, whereby the composition provides a release of L-dopa in accordance with a test in accordance with U.S. Pharmacopeia Standards in an artificial gastric juice having a pH of at most 1.2 of at most 20% by weight during 1 hr, and in a phosphate buffer according to the same standard a release of at least 35% by weight during 1 hr, and at least 80% by weight during 3 hrs.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: January 1, 1991
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Eva C. Eskilsson
  • Patent number: 4937080
    Abstract: The present invention relates to a granular product comprised of a solid product which has been provided with a coating of a melt of itself, as well as a process for the preparation of the granular product.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: June 26, 1990
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Ulf A. Odda
  • Patent number: 4888179
    Abstract: The present invention relates to a multiple-unit dose composition comprising furosemide as pharmaceutically active compound, whereby the composition gives a release of furosemide in accordance with Dissotest in a buffer having pH 1.5 of at most 4% during hour 1, a release in a buffer having pH 5.5 of at most 7.5% during a consecutive hour (hour 2), a release of furosemide in a buffer having pH 7.5 of at least 65% during a further consecutive hour (hour 3), and a release of furosemide in a buffer having pH 7.5 of at least 90% during a consecutive hour (hour 4).
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: December 19, 1989
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Eva C. Eskilsson
  • Patent number: 4840799
    Abstract: The present invention relates to a process for preparing a rapidly disintegrating core granulate containing a pharmaceutically active compound, which granulate is optionally intended to be coated with a release determining coating, as well as such cores, whereby one adds a pharmaceutically active compound, optionally together with an emulsifier, to a solvent, and optionally treats the composition obtained intensively, optionally while reducing its particle size, distributes the treated composition obtained over a bed of a solid, preferably water soluble material, and dries the agglomerates thus obtained to the so as to form a rapidly disintegrating core granulate.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: June 20, 1989
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Eva C. Eskilsson, Jonas P. Uvdal
  • Patent number: 4780318
    Abstract: The present invention relates to a new oral pharmaceutical composition having an improved release of the therapeutically active compound present therein, in the lower part of the gastro-intestinal duct having a pH exceeding 4.5, comprising as a core a therapeutically active compound in the form of a weak base, or a weak acid, on which core there is applied a first, inner layer of a diffusion membrane in the form of ethyl cellulose, and/or a copolymer of polyethyl methacrylate-methyl methacrylate-trimethylammonium ethyl methacrylate chloride, and thereabove a second layer is applied of at least one anionic polymer and/or fatty acid having a pk.sub.a of 4.5 to 7.The invention further relates to a process for the preparation of said composition, a pharmaceutical composition containing said composition, and a method for the treatment using such a composition.
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: October 25, 1988
    Assignee: Lejus Medical Aktiebolag
    Inventors: C. Henry Appelgren, Christina E. Eskilson
  • Patent number: 4770625
    Abstract: The present invention relates to an apparatus and a method for extrusion of plastic or pulverulent materials having been prepared for the purpose for obtaining an extrudate in the form of rod shaped bodies, whereby the apparatus comprises an annular perforated screen (8), a rotor (10) being rotably arranged on the inside of said perforated screen (8), The rotor (10) is provided with a number of compression surfaces (14) working in close rotation to said perforated screen (8), which surfaces (14) are arranged with an acute angle with said perforated screen (8) in their rotational direction.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: September 13, 1988
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Nemo Ivarsson
  • Patent number: 4754027
    Abstract: The present invention relates to a process for preparing a product comprising guar-gum present in the form of particles, and possessing a sustained swelling in an aqueous suspension, whereby pulverulent guar-gum flour is provided with a solution consisting of water:solvent in the relationship 60:40 to 0:100, and comprising a compound of the group consisting of film forming fatty acids, film forming polymers, and ethyl cellulose, and whereby the solvent is an organic solvent having ability in dissolving said organic film forming compounds, while creating a particle agglomerate having a size of less than 3 mm, but substantially above 0.5 mm.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: June 28, 1988
    Assignee: Lejus Medical Aktiebolag
    Inventor: Curt H. Applegren
  • Patent number: 4701341
    Abstract: The present invention relates to a process for coating granules, pills, tablets and the like for avoiding excess moistening, and for obtaining an optimal coating time, whereby said products are coated with a coating agent dissolved in a solvent, whereby the products while under movement in the form of a bed of products are sprayed with said solution which is added via a series of spraying nozzles, whereby these are placed side by side over the bed of products to be sprayed, and are placed perpendicular to the direction of movement of the bed, whereby the spray pictures are placed in such a way that overlapping of two adjacent spray pictures on the bed is avoided.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: October 20, 1987
    Assignee: Lejus Medical Aktiebolag
    Inventor: Curt H. Appelgren
  • Patent number: 4636163
    Abstract: A device for shaping a semi-moist material into spheres without substantially disintegrating and pulverizing the material, whereby a disc (2) is rotatably arranged in the horizontal plane, which disc (2) on its upper side is arranged to receive a material to be shaped, and thereby is provided with a waffle patterned surface (4), and on its under side is provided with at least two wings (7) arranged substantially radially to the rotational axis of the disc (2), and substantially perpendicular to the under side of the disc (2); that the disc on its upper side, at its periphery has an annular, smooth surface (6), and that the disc (2) is arranged to be rotated against a cylindrical wall (8), whereby between said disc (2) and said wall (8) there is provided an annular slot (9) for allowing the passage of air.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: January 13, 1987
    Assignee: Lejus Medical Aktiebolag
    Inventors: Curt H. Appelgren, Nemo Ivarsson