Patents by Inventor Nadezhda Alexandrovna Kashkina

Nadezhda Alexandrovna Kashkina 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).

  • Polymer derivative of -diethylaminoethyl ester of p-aminobenzoic acid with celluloseglycolic acid, method of producing and application thereof
    Patent number: 4005070
    Abstract: A novel substance, viz., the salt of .beta.-diethylaminoethyl p-aminobenzoate with celluloseglycolic acid has the following general formula: ##STR1## WHERE X STANDS FOR THE DEGREE OF SUBSTITUTION RANGING FROM 75 TO 100n stands for the degree of polymerization ranging from 30 to 120.A method of producing said compound comprises reacting .beta.-diethylaminoethyl p-aminobenzoate with celluloseglycolic acid in an aqueous medium, whereupon the final product is isolated.The aforementioned compound, viz., the salt of .beta.-diethylaminoethyl p-aminobenzoate with celluloseglycolic acid is the active principle of a local anesthetic drug. The proposed drug finds application in medical practive as an anesthetic in infiltration, conduction or spinal anesthesia, as well as in surface anesthesia.
    Type: Grant
    Filed: November 30, 1971
    Date of Patent: January 25, 1977
    Inventors: Milda Jaovna Pormale, Nadezhda Alexandrovna Kashkina, Arvid Janovich Kalninsh, Varvara Nikolaevna Sergeeva, Janis Alexandrovich Surna, Janis Shusters, Modris Jaowich Melzobs, Waldis Danielowich Mikazhan, Indulis Waldowich Purwinsh, Antons Petrowich Skutelis, Martinsh Aleksandrowich Liepinsh
  • High-molecular derivative of 2-dimethylaminoethyl ester of p-butylaminobenzoic acid, method for preparing same and application thereof
    Patent number: 3973007
    Abstract: The high-molecular weight derivative of the 2-dimethylaminoethyl ester of p-butylaminobenzoic acid having the formula ##EQU1## where x is the degree of substitution from 0.6 to 1.5 and n is the degree of polymerization from 30 to 120.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: August 3, 1976
    Inventors: Milda Yanovna Pormale, Nadezhda Alexandrovna Kashkina, Elfrida Indrikovna Veinberg, Arvid Yanovich Kalninsh, Janis Shusters, Valdis Danielovich Mikazhans, Indulis Valdovich Purvinsh, Antons Petrovich Skutelis
  • Salt of b-diethylaminoethyl ester of p-aminobenzoic acid with acetal of polyvinyl alcohol and glyoxalic and method of preparing same
    Patent number: 3943150
    Abstract: A salt of .beta.-diethylaminoethyl ester of p-aminobenzoic acid with the acetal of polyvinyl alcohol and glyoxalic acid which has the formula: ##EQU1## wherein n is a degree of polymerization within the range of from 100 to 1,200; x is a degree of substitution within the range of from 5 to 30 mol.%. The compound has local anaesthetic properties.A method of preparing said salt of .beta.-diethylaminoethyl ester of p-aminobenzoic acid and the acetal of polyvinyl alcohol and glyoxalic acid which comprises reacting the acetal of polyvinyl alcohol and glyoxalic acid with .beta.-diethylaminoethyl ester of p-aminobenzoic acid in an aqueous medium, followed by isolating the desired product from the resulting solution.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: March 9, 1976
    Inventors: Nadezhda Alexandrovna Kashkina, Milda Yanovna Pormale, Arvid Yanovich Kalnish, Yan Alexandrovich Surna