Patents by Inventor Mariana Surmeian

Mariana Surmeian 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 of purifying a surfactant by ultrafiltration
    Patent number: 8398860
    Abstract: A method of purifying a surfactant for use in a pharmaceutical formulation, which comprises mixing the surfactant with a solvent and bringing said mixture into contact with a semi-permeable membrane so as to allow impurities present in the surfactant and having a molecular weight lower than the molecular weight cut-off of the membrane to pass through the membrane, whilst retaining the purified surfactant.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: March 19, 2013
    Assignee: Sindan Pharma SRL
    Inventors: Constantin Busoi, Maria Rotaru, Bogdan-Mihai Oghina, Mariana Surmeian
  • Method of Purifying a Surfactant by Ultrafiltration
    Publication number: 20080287524
    Abstract: A method of purifying a surfactant for use in a pharmaceutical formulation, which comprises mixing the surfactant with a solvent and bringing said mixture into contact with a semi-permeable membrane so as to allow impurities present in the surfactant and having a molecular weight lower than the molecular weight cut-off of the membrane to pass through the membrane, whilst retaining the purified surfactant.
    Type: Application
    Filed: February 10, 2006
    Publication date: November 20, 2008
    Inventors: Constantin Busoi, Maria Rotaru, Bogdan-Mihai Oghina, Mariana Surmeian