Patents by Inventor Pieter J. Noomer

Pieter J. Noomer 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).

  • Process for recovering caffeine absorbed in activated carbon, and a process for decaffeinating coffee
    Patent number: 4877631
    Abstract: A process for recovering from caffeine-loaded activated carbon by treatment f the loaded carbon with an acid. According to the present invention, activated carbon is treated with a compound having the formula ##STR1## wherein R.sub.1 is methyl, H or Cl, and R.sub.2 is Cl, OH or phenyl.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: October 31, 1989
    Assignee: Douwe Egberts Koninklijke Tabaksfabriek-Koffiebranderijen-Theehandel N.V.
    Inventors: Louris Kaper, Roelof Klamer, Pieter J. Noomer