Patents by Inventor Jyrki Lamsa

Jyrki Lamsa 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).

  • Method for the preparation of a therapeutically active compound
    Patent number: 4866174
    Abstract: A method for the preparation of 2,4-diamino-3-oxy-6-piperidyl-pyrimidine or minoxidil wherein a compound of the formula ##STR1## wherein R is a C.sub.1-4 alkyl or a phenyl group optionally having up to three C.sub.1-4 alkyl substituents, is oxidized to a compound of the formula ##STR2## which according to known methods is reacted with piperidine to minoxidil. In the inventive method magnesium monoperoxyphthalate, which has the formula ##STR3## is used as the oxidizing agent.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: September 12, 1989
    Assignee: Farmos-Yhtyma Oy
    Inventor: Jyrki Lamsa