Patents by Inventor Zenowie M. Holubec

Zenowie M. Holubec 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).

  • Multigrade lubricants containing interpolymers
    Patent number: 4162985
    Abstract: Oil compositions useful as lubricants and multigraded between SAE 75W and SAE 250 can be made by combining (A) about 95 to about 30 weight percent of a base oil consisting of an oil having a viscosity of about 40 to 2000 SUS at 100.degree. F., (B) an extreme pressure improving amount of at least one extreme pressure agent, and (C) about 5 to about 70 weight percent of at least one oil-soluble polymer, said polymer being exemplified by a hydrogenated interpolymer of a monovinyl arene and at least one C.sub.4-6 conjugated diene or at least one C.sub.2-6 alpha-olefin.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: July 31, 1979
    Assignee: The Lubrizol Corporation
    Inventor: Zenowie M. Holubec