Patents by Inventor Chet Sapino, Jr.

Chet Sapino, Jr. 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).

  • Process for preparing cephalosporin intermediates
    Patent number: 4868294
    Abstract: Processes for the preparation of stable, crystalline cephalosporin intermediates of the formula ##STR1## wherein X is HI or HCl, and Nu and Nu.sup..sym. are certain N-containing heterocyclic rings attached via a sulfur atom or a ring nitrogen atom, respectively, which are substantially free of the .DELTA..sup.2 isomer; processes for intermediates in the preparation of the above compounds; and processes for the preparation of broad-spectrum cephalosporin antibiotics.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: September 19, 1989
    Assignee: Bristol-Myers Company
    Inventors: Steven P. Brundidge, Paul R. Brodfuehrer, Chet Sapino, Jr., Kun M. Shih, Donald G. Walker
  • Cephalosporin intermediates
    Patent number: 4714760
    Abstract: Stable, crystalline cephalosporin intermediates of the formula ##STR1## wherein X is HI or HCl and Nu and Nu.sup..sym. are certain N-containing heterocyclic rings attached via a sulfur atom or a ring nitrogen atom, respectively, which are substantially free of the .DELTA..sup.2 isomer; processes for, and intermediates in, the preparation of the above compounds; and processes for the preparation of broad-spectrum cephalosporin antibiotics.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: December 22, 1987
    Assignee: Bristol-Myers Company
    Inventors: Steven P. Brundidge, Paul R. Brodfuehrer, Chet Sapino, Jr., Kun M. Shih, Donald G. Walker