Patents by Inventor Robert J. Stepan

Robert J. Stepan 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).

  • Environmentally friendly sugar mill bearing lubricant
    Patent number: 5691286
    Abstract: An environmentally safe sugar mill journal bearing lubricant for use in the processing of sugar cane. The sugar mill journal bearing lubricant comprises a major amount of chewing gum base derived from synthetic or natural products to prevent metal to metal contact, and an edible triglyceride oil such as lard or canola oil. Additionally, a minor amount of high molecular weight polybutene, a USDA authorized extreme pressure additive, and/or an polymeric tackifier for increasing film strength and providing boundary lubrication may be included in the lubricant.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 25, 1997
    Assignee: Dylon Industries Inc.
    Inventor: Robert J. Stepan