Patents by Inventor Douglas C. Carlson

Douglas C. Carlson 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
    Patent number: 4280916
    Abstract: Motor oil compositions formulated for use as crankcase lubricants in internal combustion engines are improved by including in said motor oil a small amount of at least one C.sub.8 -C.sub.24 aliphatic monocarboxylic acid amide, resulting in reduced fuel consumption of said internal combustion engines operated with said motor oil.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: July 28, 1981
    Assignee: Shell Oil Company
    Inventors: Harry F. Richards, Douglas C. Carlson