Patents by Inventor Hans Johann Mayer

Hans Johann Mayer 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).

  • Optically active cyclohexane derivatives
    Patent number: 4095038
    Abstract: A process for fermentatively hydrogenating and reducing ketoisophorone to produce optically active [4R,6R]-4-hydroxy-2,6,6-trimethyl-cyclohexanone useful as an intermediate in the production of optically active carotenoids and intermediates in the production of these carotenoids.
    Type: Grant
    Filed: July 20, 1976
    Date of Patent: June 13, 1978
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Walter Boguth, Hans Georg Wilhelm Leuenberger, Hans Johann Mayer, Erich Widmer, Reinhard Zell
  • Optically active cyclohexane derivatives
    Patent number: 4026949
    Abstract: A process for fermentatively hydrogenating and reducing ketoisophorone to produce optically active [4R,6R]-4-hydroxy-2,6,6-trimethyl-cyclohexanone useful as an intermediate in the production of optically active carotenoids and intermediates in the production of these carotenoids.
    Type: Grant
    Filed: July 20, 1976
    Date of Patent: May 31, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Walter Boguth, Hans Georg Wilhelm Leuenberger, Hans Johann Mayer, Erich Widmer, Reinhard Zell
  • 4-Benzyloxymethyl-5-[(1-pyrrolidinyl-carbonyl)-methyl]-1,3-cyclopent ylene-diacetate compounds
    Patent number: 4021446
    Abstract: A process for preparing (3,4,5,6)-4-benzyloxymethyl-hexahydro-5-hydroxy-2H-cyclopenta[b]furan-2-on e, a known intermediate for producing prostaglandins from 5,6-dimethylbicyclo[2.2.1]hept-5-en-2-endo-3-endo-dicarboxylic acid anhydride and intermediates in this process.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: May 3, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Albert Eduard Fischli, Michael Josef Klaus, Hans Johann Mayer, Alexander Eduard Wick
  • Prostaglandin intermediates
    Patent number: 3991080
    Abstract: Process for synthesizing a prostaglandin from a hexahydro-4-(lower alkoxy)-2H-oxireno[3,4]cyclopenta[1,2-b]furan, utilizing as an intermediate in the process a hexahydro-5-hydroxy-2-lower alkoxy-2H-cyclopentab]furan-4-carboxaldehyde, and the novel cyclopenta(b)furan intermediates of the process.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: November 9, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Hans Johann Mayer, Albert Eduard Fischli, Michael Josef Klaus, Alexander Eduard Wick
  • Optically active cyclohexane derivatives
    Patent number: 3988205
    Abstract: A process for fermentatively hydrogenating and reducing ketoisophorone to produce optically active [4R,6R]-4-hydroxy-2,6,6-trimethyl-cyclohexanone useful as an intermediate in the production of optically active carotenoids and intermediates in the production of these carotenoids.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: October 26, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Walter Boguth, Hans Georg Wilhelm Leuenberger, Hans Johann Mayer, Erich Widmer, Reinhard Zell
  • Hexahydro-5-oxy-2-loweralkoxy-2H-cyclopenta[b]-furan-4-carbonitrile intermediates for prostaglandins
    Patent number: 3975406
    Abstract: Process for synthesizing a prostaglandin from a hexahydro-4-(lower alkoxy)-2H-oxireno [3,4] cyclopenta[1,2-b] furan, utilizing as an intermediate in the process a hexahydro-5-hydroxy-2-lower alkoxy-2H-cyclopenta [b]furan-4-carboxaldehyde, and the novel cyclopenta(b)furan intermediates of the process.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: August 17, 1976
    Inventors: Hans Johann Mayer, Albert Eduard Fischli, Michael Josef Klaus, Alexander Eduard Wick
  • Novel polyene compounds and process therefor
    Patent number: 3975445
    Abstract: A novel process for the preparation of polyene compounds useful as coloring agents in foods, cosmetics, and pharmaceutical preparations. Novel polyenes are also disclosed.The present invention relates to polyene compounds. More particularly, the invention is concerned with novel carotenoid polyene compounds, derivatives thereof and a process for their manufacture.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: August 17, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Frank Kienzle, Hans Johann Mayer
  • Hexahydro-cyclopentano[b]furans having a 2-C.tbd.C containing substituent in the 4-position
    Patent number: 3974185
    Abstract: Process for synthesizing a prostaglandin from a hexahydro-4-(lower alkoxy)-2H-oxireno[3,4]cyclopenta[1,2-b]furan, utilizing as an intermediate in the process a hexahydro-5-hydroxy-2-lower alkoxy-2H-cyclopenta[b]furan-4-carboxyaldehyde, and the novel cyclopenta(b)furan intermediates of the process.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: August 10, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Hans Johann Mayer, Albert Eduard Fischli, Michael Josef Klaus, Alexander Eduard Wick
  • Certain hexahydro-2-loweralkoxy-5-oxycyclopenta [b] furans containing an olefinic substituent in the 4-position
    Patent number: 3970674
    Abstract: Process for synthesizing a prostaglandin from a hexahydro-4-(lower alkoxy)-2H-oxireno[3,4]cyclopenta[1,2-b]furan, utilizing as an intermediate in the process a hexahydro-5-hydroxy-2-lower alkoxy-2H-cyclopenta[b]furan-4-carboxaldehyde, and the novel cyclopenta(b)furan intermediates of the process.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: July 20, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Hans Johann Mayer, Albert Eduard Fischli, Michael Josef Klaus, Alexander Eduard Wick