Patents by Inventor Akop A. Miramanian

Akop A. Miramanian 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).

  • Method of preparing naphthenic acids
    Patent number: 4227020
    Abstract: A method for preparing naphthenic acids consists in that a petroleum fraction is oxidized at a temperature of 135.degree.-140.degree. C. in the presence of catalyst consisting of manganese naphthenate and potassium naphthenate; the obtained mixture of organic oxygen-containing compounds containing naphthenic and hydroxynaphthenic acids is diluted with an organic solvent, and the hydroxynaphthenic acids are precipitated and separated; the solution of the organic oxygen-containing compounds freed from hydroxynaphthenic acids in said organic solvent is treated with an aqueous solution of sodium hydroxide; thus obtained aqueous solution of sodium naphthenates is separated; said aqueous solution of sodium naphthenates is treated with diethyl sulphate at a temperature of 90.degree.-95.degree. C. to isolate ethyl naphthenates from which a fraction of ethyl naphthenate boiling out in a temperature range of 75.degree.-170.degree. C.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: October 7, 1980
    Inventors: Bagadur K. Zeinalov, Vagab S. Aliev, Arif A. Akhundov, Jury N. Bocharov, Vladimir D. Lugovskoi, Akop A. Miramanian