Patents by Inventor Ming Nan Sheng

Ming Nan Sheng 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).

  • Selenium catalyzed decomposition of peroxide intermediates resulting from the autoxidation of acrolein and methacrolein
    Patent number: 4115440
    Abstract: A process for the preparation of acrylic acid or methacrylic acid which comprises catalytically decomposing or converting in the presence of selenium the peroxide (peroxy) compounds formed during autoxidation or contained in the oxidate solution derived from the autoxidation of the respective acrolein or methacrolein, particularly, the conversion of permethacrylic acid and methacrolein monopermethacrylate to methacrylic acid.
    Type: Grant
    Filed: April 19, 1977
    Date of Patent: September 19, 1978
    Assignee: Atlantic Richfield Company
    Inventors: Ming Nan Sheng, Jar-lin Kao
  • Production of monoaromatics from light pyrolysis fuel oil
    Patent number: 4022681
    Abstract: A light gas oil, consisting predominantly of alkylated naphthalenes plus minor amounts of thiophene, quinoline, indan, and related naphthalene type carbonaceous compounds, derived from the liquid by-product from olefin production by pyrolysis in steam of a hydrocarbon fraction, is converted to mononuclear aromatic hydrocarbons by a two stage process in which said naphthalene type carbonaceous compounds are first hydrogenated at tetralinizing conditions saturating only one of the two aromatic rings of the feedstock. Said first stage hydrogenation also hydrodesulfurizes and hydrodecontaminates said feedstock. The tetralanized desulfurized normally liquid effluent from the first stage hydrogenation is hydrocracked in the second stage, said hydrocracking being in the presence of a catalyst featuring a stabilizing metal component on an acid-modified mordenite having a silica to alumina unit mol ratio within the range from 15 to 70 as a result of acid leaching of mordenite.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: May 10, 1977
    Assignee: Atlantic Richfield Company
    Inventors: Ming Nan Sheng, Walter Anthony Mameniskis, Patrick Walter Ryan
  • Oxidation of alcohols to carboxylic acids with ruthenium catalysts and peracid oxidizing agents
    Patent number: 3997578
    Abstract: A process for the preparation of fatty acids by the oxidation of alcohols, particularly, primary alcohols, such as, octanol-1 and vicinal-diols, such as cyclohexane-1,2-diol, in which the alcohol is contacted with a peracid as an oxidizing agent in the presence of a ruthenium catalyst, such as, ruthenium chloride, ruthenium dioxide, etc., and an inert organic solvent, such as, heptane, hexane, chloroform, carbon tetrachloride, etc. If desired the process may include the addition of an organic or inorganic base, such as amines, and alkali metal and alkaline earth metal hydroxides, carbonates, phosphates, etc.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: December 14, 1976
    Assignee: Atlantic Richfield Company
    Inventor: Ming Nan Sheng