Patents by Inventor Tae Jin Eom

Tae Jin Eom 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).

  • Biological De-Inking Method
    Publication number: 20080236769
    Abstract: A method of de-inking wastepaper by pulping the paper in the presence of an enzyme is disclosed. The enzyme dislodges the ink particles from the paper fibers. The preferred enzymes are the acid resistant carbohydrases. The de-inking medium is an aqueous solution of the enzyme, preferably maintained at a pH less than about 7 and at a temperature between about 20° C. and about 60° C. No conventional chemical de-inking agents are required. The dislodged ink particles may be removed by any conventional method, such as flotation or washing.
    Type: Application
    Filed: June 6, 2008
    Publication date: October 2, 2008
    Inventors: Steven Say-Kyoun OW, Tae Jin Eom
  • Biological de-inking method
    Patent number: 5785809
    Abstract: A method of de-inking wastepaper by pulping the paper in the presence of an enzyme is disclosed. The enzyme dislodges the ink particles from the paper fibers. The preferred enzymes are the acid resistant carbohydrases. The de-inking medium is an aqueous solution of the enzyme, preferably maintained at a pH less than about 7 and at a temperature between about 20.degree. C. and about 60.degree. C. No conventional chemical de-inking agents are required. The dislodged ink particles may be removed by any conventional method, such as flotation or washing.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: July 28, 1998
    Assignee: KRICT
    Inventors: Steven Say-kyoun Ow, Tae Jin Eom