Patents by Inventor Max Fremery

Max Fremery 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).

  • Catalysts for the o-substitution of phenols
    Patent number: 4406824
    Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: September 27, 1983
    Assignee: Union Rheinische Braunkohlen Kraftstoff AG
    Inventors: Max Fremery, Karl-Heinz Keim, Joachim Korff
  • Process for the o-substitution of phenols
    Patent number: 4400557
    Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, vanadium, at least one oxide of boron, aluminum, titanium, zirconium, silicon, germanium, tin and lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: August 23, 1983
    Assignee: Braunkohlen Kraftstoff Aktiengesellschaft
    Inventors: Max Fremery, Joachim Korff
  • Process for the o-substitution of phenols
    Patent number: 4359591
    Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: November 16, 1982
    Assignee: Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft
    Inventors: Max Fremery, Karl-Heinz Keim, Joachim Korff
  • Process for the production of acetaldehyde dimethyl acetal
    Patent number: 4278819
    Abstract: Improved process for the production of acetaldehyde dimethyl acetal by reacting methanol with carbon monoxide and hydrogen in the presence of a cobalt-containing catalyst, halogen or a halide as promoter and a 3-valent phosphorus compound as ligand using a nickel compound as a co-catalyst.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: July 14, 1981
    Assignee: Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft
    Inventors: Joachim Korff, Max Fremery, Johannes Zimmermann
  • Thermoelectrochemical cyclical process for production of hydrogen and oxygen from water
    Patent number: 4080436
    Abstract: A process for producing hydrogen and oxygen from water in a cyclical process wherein aqueous sulfuric acid, containing hydrogen bromide, is electrolyzed to form hydrogen and bromine. Bromine is reacted with sulfur dioxide and water into sulfuric acid and hydrogen bromide. The hydrogen bromide is separated from the sulfuric acid and recycled into the electrolysis. The sulfuric acid is thermally cracked to form sulfur dioxide, water and oxygen. Sulfur dioxide is recycled and combined with bromine for completion of the reaction cycle.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: March 21, 1978
    Assignee: Rheinische Braunkohlenwerke AG
    Inventors: Max Fremery, Hans-Rolf Buhmann