Patents by Inventor Ronnie D. Dennis

Ronnie D. Dennis 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).

  • Diarylcyclobutanes
    Patent number: 4035426
    Abstract: 1,3-bis(p-Hydroxyphenyl)cyclobutane and its monomethyl ether are estrogenic agents having antifertility action. They are prepared from R.sup.2 ethers of the monomethyl ether in which R.sup.2 is a readily cleaved hydroxl-protecting group, and from the corresponding 3-cyclobutanol compounds.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: July 12, 1977
    Assignee: Mead Johnson & Company
    Inventors: John E. Lawson, Ronnie D. Dennis, Robert F. Majewski
  • Diarylcyclobutanes
    Patent number: 3939196
    Abstract: 1,3-bis(p-Hydroxyphenyl)cyclobutane and its monomethyl ether are estrogenic agents having antifertility action.
    Type: Grant
    Filed: February 20, 1974
    Date of Patent: February 17, 1976
    Assignee: Mead Johnson & Company
    Inventors: John E. Lawson, Ronnie D. Dennis, Robert F. Majewski