Patents by Inventor W. Lawrence Parker

W. Lawrence Parker 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).

  • Crystalline salts of [3S(Z)]-2[[[1-(2-amino-4-thiazolyl)-2-[[2,2-dimethyl-4-oxo-1-(sulfooxy)- 3-azetidinyl]amino]-2-oxoethylidene]-amino]oxy]acetic acid
    Patent number: 4751220
    Abstract: In accordance with the present invention an orally active monosulfactam antibiotics having a crystalline structure and thereby improved stability are disclosed. The antibiotics comprise the dierythromycin (M.sup..sym.=erythromycin.H.sup..sym.) salt or the dicholine (M.sup..sym. =HOCH.sub.2 CH.sub.2 N.sup..sym. (CH.sub.3).sub.3) salt of the acid (M.sup..sym. =H.sup..sym.) having the formula ##STR1## that is, [3S(Z)]-2[[[1-(2-amino-4-thiazolyl)-2-[[2,2-dimethyl-4-oxo-1-(sulfooxy)-3- azetidinyl]-amino]-2-oxoethylidene]amino]oxy]acetic acid.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: June 14, 1988
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: W. Lawrence Parker, Edward M. Cohen, William H. Koster