Patents by Inventor Alf Bjørseth

Alf Bjørseth 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).

  • Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy
    Patent number: 8410172
    Abstract: The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R22N—CH2COCH2—CH2CO—OR1 (wherein R1 may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R2 represents a hydrogen atom or a group R1, and both R2 groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: April 2, 2013
    Assignee: Photocure ASA
    Inventors: Karl E. Gierskcky, Johan Moan, Qian Peng, Harald Steen, Trond Warloe, Alf Bjørseth
  • Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy
    Publication number: 20110086915
    Abstract: The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R22N—CH2COCH2—CH2CO—OR1 (wherein R1 may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R2 represents a hydrogen atom or a group R1, and both R2 groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.
    Type: Application
    Filed: December 6, 2010
    Publication date: April 14, 2011
    Inventors: Karl E. GIERSKCKY, Johan Moan, Qian Peng, Harald Steen, Trond Warloe, Alf Bjørseth
  • Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy
    Patent number: 7850008
    Abstract: The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R22N—CH2COCH2-CH2CO—OR1 (wherein R1 may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R2 represents a hydrogen atom or a group R1, and both R2 groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: December 14, 2010
    Assignee: Photocure ASA
    Inventors: Karl E. Gierskcky, Johan Moan, Qian Peng, Harald Steen, Trond Warloe, Alf Bjørseth
  • Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy
    Patent number: 7530461
    Abstract: The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R22N—CH2COCH2-CH2CO—OR1 (wherein R1 may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R2 represents a hydrogen atom or a group R1, and both R2 groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: May 12, 2009
    Assignee: PhotoCure ASA
    Inventors: Karl E. Gierskcky, Johan Moan, Qian Peng, Harald Steen, Trond Warloe, Alf Bjørseth