Patents by Inventor Sten Krister Kristensson

Sten Krister Kristensson 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).

  • Estramustine phosphate alcohol complexes, their preparation, and their use as intermediates in purification of said compound and salts thereof
    Patent number: 4115414
    Abstract: This invention relates to Estramustine Phosphate alcohol complexes, their preparation, and their use as intermediates in purification of said compound and salts thereof, and more particularly to a method of such purification which involves the use of certain alcohols which form molecular complexes with Estramustine Phosphate. It also includes said novel molecular complexes.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: September 19, 1978
    Assignee: Aktiebolaget Leo
    Inventors: Sten Krister Kristensson, Anders Robert Stamvik
  • Acylation process for the preparation of steroid phenolic n-disubstituted carbamate esters, and ion pair solution for use in the process
    Patent number: 4082779
    Abstract: This invention relates to a novel carbamoylation method for the preparation of steroid phenolic N-disubstituted carbamate esters, and novel compounds in said method. Phenolic carbamate esters are useful for various purposes, for instance as pharmaceuticals, e.g. antitumor agents, as biocides, e.g. pesticides, and intermediates for preparing such useful compounds.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: April 4, 1978
    Assignee: Aktiebolaget Leo
    Inventors: Hans Jacob Fex, Sten Krister Kristensson, Anders Robert Stamvik
  • Acylation process for the preparation of phenolic N-disubstituted carbamate esters, and ion pair solution for use in the process
    Patent number: 4081461
    Abstract: This invention relates to a novel carbamoylation method for the preparation of phenolic N-disubstituted carbamate esters, and novel compounds in said method. Phenolic carbamate esters are useful for various purposes, for instance as pharmaceuticals, e.g. antitumor agents, as biocides, e.g. pesticides, and intermediates for preparing such useful compounds.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: March 28, 1978
    Assignee: Aktiebolaget Leo
    Inventors: Hans Jacob Fex, Sten Krister Kristensson, Anders Robert Stamvik