Patents by Inventor Alexei Egorovich Mastjukov, deceased

Alexei Egorovich Mastjukov, deceased 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).

  • Lubricant composition for drilling pipe
    Patent number: 3957663
    Abstract: A method of preparation of a lubricant for lubricating the external surface of a drilling pipe comprising the steps of preparing a mixture consisting essentially of gear box oil, petroleum paraffins, bitumen and distillation residue; primary heating of said mixture to 100.degree.C and secondary heating up to 300.degree.C.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: May 18, 1976
    Inventors: Vladimir Sergeevich Shavyrin, Vyacheslav Nikolaevich Gusakov, Klavdia Vasilievna Pankova, Nina Petrovna Polyakova, Natalya Petrovna Shirkaeva, Valentin Nicolaevich Gorin, Oleg Semenovich Golovin, Alexei Egorovich Mastjukov, deceased, Maria Pavlovna Mastjukova, heir