Patents by Inventor Clifford E. Sacks

Clifford E. Sacks 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).

  • Conversion of cephalosporin hydrohalide salt to alkali metal salt
    Patent number: 4937330
    Abstract: The present invention relates to processes for the preparation of alkali metal salts of amino acids. Preferably, the present invention relates to solid phase alkali metal salts of cephalosporins of formula III, wherein M is selected from the group consisting of sodium, potassium and lithium, characterized by birefringent lath- and rod-shaped particles, and processes for their manufacture.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: June 26, 1990
    Assignee: The Upjohn Company
    Inventors: Clifford E. Sacks, Loren H. Dill
  • Process and intermediates for the preparation of 17 alphahydroxyprogesterones and corticoids from an enol steroid
    Patent number: 4613463
    Abstract: This invention discloses an improved process for the production of corticoids from 17.alpha.-hydroxy steroids utilizing peroxymonosulfate.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: September 23, 1986
    Assignee: The Upjohn Company
    Inventor: Clifford E. Sacks
  • Acyclic amine epoxide process
    Patent number: 4442035
    Abstract: Acyclic amines are used to transform 9.alpha.-substituted-11.beta.-hydroxy 21-acyloxy steroids to the corresponding 9.beta.,11.beta.-epoxy 21-acyloxy steroids without removal of the C.sub.17 or C.sub.21 ester. The acyclic amines are cheaper and easier to prepare than previously disclosed dehydrohalogenating agents which do not produce cleavage of the C.sub.21 ester.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: April 10, 1984
    Assignee: The Upjohn Company
    Inventor: Clifford E. Sacks
  • Process for making phosphorus derivatives of aminothiomethylcarbamates
    Patent number: 4426335
    Abstract: This invention pertains to novel processes for preparing phosphorus derivatives of aminothiomethylcarbamates known to be useful as pesticides. The processes use products prepared by a novel method which reacts disulfides of various amides of phosphoric acids with chlorine or bromine. Such sulfenyl halide products are advantageous and obtained in unexpected yields. Therefore, the method is also unobvious. When the novel sulfenyl bromides of this invention are intermediates unexpected yields of pesticides are obtained.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: January 17, 1984
    Assignee: The Upjohn Company
    Inventor: Clifford E. Sacks
  • Disulfides of amides of phosphoric acid
    Patent number: 4308217
    Abstract: Selected disulfides of various amides of phosphoric acids are claimed. They are useful to make corresponding sulfenyl chlorides or bromides in novel processes for preparing phosphorus derivatives of aminothiomethylcarbamates useful as pesticides.
    Type: Grant
    Filed: May 20, 1980
    Date of Patent: December 29, 1981
    Assignee: The Upjohn Company
    Inventors: Stephen J. Nelson, Clifford E. Sacks