Patents by Inventor Paul B. Sollman

Paul B. Sollman 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 of making carfentanil and related analgesics
    Patent number: 5106983
    Abstract: An improved process or method of synthesis of carfentanil and other potent nalgesics of the N-alkyl 4-substituted 4-piperidinylamide class which can be used as morphine substitutes.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: April 21, 1992
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Louis P. Reiff, Paul B. Sollman
  • 11-Amino-11-deoxydaunorubicin and analogs
    Patent number: 4348388
    Abstract: 11-Amino-11-deoxydaunorubicin and analogs represented by the formula: ##STR1## wherein: R is hydrogen, hydroxy or methoxy; R.sub.1 is hydrogen or hydroxy; and the pharmaceutically acceptable salts thereof.The compounds are useful in ameliorating tumor growth.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: September 7, 1982
    Assignee: G.D. Searle & Co.
    Inventors: Robert B. Garland, Raphael Pappo, Paul B. Sollman
  • (-)-.alpha.-{2-[Bis(1-methylethyl)amino]ethyl}-.a lpha.-phenyl-2-pyridineacetamide and pharmacologically acceptable salts thereof
    Patent number: 4255582
    Abstract: Preparation of antiarrhythmic (-)-.alpha.-{2-[bis(1-methylethyl)amino]ethyl}-.alpha.-phenyl-2-pyridineac etamide and pharmacologically acceptable salts thereof characterized by advantageously diminished and/or favorably altered side-effects such as anticholinergic activity is disclosed.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: March 10, 1981
    Assignee: G. D. Searle & Co.
    Inventor: Paul B. Sollman
  • Resolution of alkyl esters of DL-phenylalanine
    Patent number: 3941831
    Abstract: Treatment of DL-phenylalanine alkyl esters with N-acyl-D-phenylalanines results in the formation of insoluble salts of the L-phenylalanine alkyl esters and N-acyl-D-phenylalanines. The salts are isolated and decomposed to afford the desired L-phenylalanine alkyl esters, which are important starting materials in the preparation of artificial sweetening agents.
    Type: Grant
    Filed: September 10, 1973
    Date of Patent: March 2, 1976
    Assignee: G. D. Searle & Co.
    Inventor: Paul B. Sollman