Patents by Inventor Guberovic Zeljko

Guberovic Zeljko 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).

  • Process for the production of dipotassium-ascorbate-2-sulfate
    Patent number: 5239087
    Abstract: The present invention relates to a process for the production of dipotassium-ascorbate-2-sulfate-dihydrate, a vitamin C derivative. It is used, among other things, as an additive to fish feed. In the process according to the process according to the invention, trimethylamine-sulfur-trioxide complex is added in only slight molar excess to a concentrated solution of potassium-L-ascorbate in water, and the pH value of this reaction mixture is set by successive additions of potassium hydroxide at a value in the range between 9.5 and 10.5, and is kept at this value for the duration of the reaction. The process permits the profitable production of dipotassium-ascorbate-2-sulfate-dihydrate on a large industrial scale. It is also explained how trimethylamine-sulfur-trioxide complex can be recovered from trimethylamine which occurs as a by-product during the production of dipotassium-ascorbate-2-sulfate.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: August 24, 1993
    Assignee: Enco Engineering Chur AG
    Inventors: Guberovic Zeljko, Marijan Hohnjec, Josip Kuftinec, Milan Oklobdzija