Patents by Inventor Juhan Koll

Juhan Koll 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 for producing aminoethylethanolamine and/or hydroxyethyl piperazine
    Patent number: 6013801
    Abstract: A method for preparing aminoethylethanolamine, and/or hydroxyethylpiperazine is described. Reaction of ethylene oxide with ethylendiamine, piperazine, or a mixture of both produces these compounds.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: January 11, 2000
    Assignee: Akzo Nobel N.V.
    Inventors: Juhan Koll, deceased, Magnus Frank
  • Process of using a ruthenium-promoted, halogen-containing, nickel and/or cobalt catalyst, to catalyze an amination reaction
    Patent number: 4992587
    Abstract: Process for preparing a ruthenium promoted, halogen-containing, nickel and/or cobalt catalyst includes impregnating, in one or more steps, a porous metal oxide support with a nickel compound and/or a cobalt compound, and a ruthenium compound to form a catalyst intermediate; reducing the nickel compound and/or cobalt compound, and ruthenium compound, in one or more steps, to the respective metal by reacting the catalyst intermediate with hydrogen gas at an elevated temperature sufficient to reduce the respective compounds to the metal; and introducing halogen by adding a halide compound at any stage in the process. Catalyst prepared by the above process and use thereof.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: February 12, 1991
    Assignee: Berol Kemi AB
    Inventor: Juhan Koll
  • Process for preparing a ruthenium-promoted, halogen-containing nickel and/or cobalt catalyst and a catalyst prepared by the process
    Patent number: 4863890
    Abstract: Process for preparing a ruthenium promoted, halogen-containing, nickel and/or cobalt catalyst includes impregnating, in one or more steps, a porous metal oxide support with a nickel compound and/or a cobalt compound, and a ruthenium compound to form a catalyst intermediate; reducing the nickel compound and/or cobalt compound, and ruthenium compound, in one or more steps, to the respective metal by reacting the catalyst intermediate with hydrogen gas at an elevated temperature sufficient to reduce the respective compounds to the metal; and introducing halogen by adding a halide compound at any stage in the process. Catalyst prepared by the above process and use thereof.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: September 5, 1989
    Assignee: Berol Kemi AB
    Inventor: Juhan Koll
  • Promoted nickel and/or cobalt catalyst, its use, and process performed in its presence
    Patent number: 4855505
    Abstract: The invention relates to a ruthenium promoted nickel and/or cobalt dehydrogenation-hydrogenation catalyst. The ruthenium on the catalyst is applied from a solution containing a ruthenium halide compound. The catalyst use in organic reactions and a process performed in its presence are also described. Preferably, the catalyst is used to aminate alkylene oxides, alcohols, phenols, alkanolamines, aldehydes, and ketones.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: August 8, 1989
    Assignee: Berol Kemi AB
    Inventor: Juhan Koll
  • Promoted nickel and/or cobalt catalyst, its use, and process performed in its presesnce
    Patent number: 4701434
    Abstract: The invention relates to a ruthenium promoted nickel and/or cobalt dehydrogenation-hydrogenation catalyst. The ruthenium on the catalyst is applied from a solution containing a ruthenium halide compound. The catalyst use in organic reactions and a process performed in its presence are also described. Preferably, the catalyst is used to aminate alkylene oxides, alcohols, phenols, alkanolamines, aldehydes, and ketones.
    Type: Grant
    Filed: September 5, 1984
    Date of Patent: October 20, 1987
    Assignee: Berol Kemi AB
    Inventor: Juhan Koll