Patents by Inventor Johann Doulakas

Johann Doulakas 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).

  • Stabilization of mercury-containing preservatives in ophthalmic medicaments
    Patent number: 4829083
    Abstract: The invention relates to the stabilization of mercury-containing preservatives in liquid or gel-form ophthalmic medicaments. This stabilization against chemical decomposition after the preservative has become deposited on the inner walls of the plastics containers is achieved by adding to the formulation 2-amino-2-hydroxymethyl-1,3-propanediol or a homologue thereof having up to 10 carbon atoms.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: May 9, 1989
    Assignee: Dispersa AG
    Inventor: Johann Doulakas
  • Medicament for the treatment of inflammations of the eye
    Patent number: 4829088
    Abstract: The invention relates to an ophthalmic medicament containing diclofenac-sodium in aqueous solution. Owing to the addition of a specific stabilizer, the medicament has excellent stability against chemical decomposition of the active ingredient and outstanding preservation properties and is tolerated very well by the eye.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: May 9, 1989
    Assignee: Dispersa AG
    Inventor: Johann Doulakas