Patents by Inventor Pencho V. Burov

Pencho V. Burov 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).

  • Cosmetic composition
    Patent number: 4228153
    Abstract: A novel cosmetic is obtained by mechanical mixing of a 0.6-0.8% solution of a collagen and adding thereto from 0.6-1% of pyridoxal phosphate.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: October 14, 1980
    Assignee: DSO "Pharmachim"
    Inventors: Pencho V. Burov, Nadejda A. Kyuleva