Patents by Inventor Lev Lvovich Gervits

Lev Lvovich Gervits 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).

  • Perfluoronated cycle-containing tertiary amines used as a basis for gas-conveying emulsions and device for the production thereof
    Patent number: 6878826
    Abstract: Tertiary perfluorocycloamines (TPFCAs) of general formula (1) where n=1 or 2, m=2 or 3, X is wherein at n=2 X is as the basis for gas transport emulsions. TPFCAs comprise a group of compounds which are close in their physicochemical properties to perfluoro-N-(4-methylcyclohexyl)-piperidine, particularly in the critical temperature of dissolution in hexane, and which are used in a mixture, forming a number of compounds with gradually varying characteristics. Owing to this, a greater homogeneity of the fluorocarbon phase is achievable in the emulsions and it becomes possible to enhance the stability of the emulsion particles stabilized by an ethylene oxide-propylene oxide block copolymer, with the absence of toxicity for large animals. A mixture of TPFCAs is prepared by electrochemical fluorination of n-piperidinoheptafluorotoluene in anhydrous hydrogen fluoride.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: April 12, 2005
    Assignee: Otkrytoe Aktsionernoe obschestvo Nauchno-proizvodstvennaya firma Perftoran
    Inventors: Lev Lvovich Gervits, Kirill Nikolaevich Makarov, Evgeny Ilich Maevsky, Genrikh Romanovich Ivanitsky, Sergei Jurievich Pushkin, Igor Alexeevich Maslennikov
  • Perfluoronated cycle-containing tertiary amines used as a basis for gas-conveying emulsions and device for the production thereof
    Publication number: 20040054184
    Abstract: Tertiary perfluorocycloamines (TPFCAs) of general formula (1) 1
    Type: Application
    Filed: October 7, 2003
    Publication date: March 18, 2004
    Inventors: Lev Lvovich Gervits, Kirill Nikolaevich Makarov, Ilich Maevsky Evgeny