Patents by Inventor Joanes Gelan

Joanes Gelan 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).

  • Patent number: 7087787
    Abstract: The invention relates to a method for producing derivatives of 4-alkylsulfinyl methylarylene methanols. Derivatives of 4-alkylsulfinyl methylarylene methanols are valuable monomers in the production of conjugated polymers, which are suitable for use as electroluminescent materials.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: August 8, 2006
    Assignee: Covion Organic Semiconductors GmbH
    Inventors: Dirk Vanderzande, Joanes Gelan, Albert van Breemen, Michael Van Der Borght, Laurence Lutsen, Raf Kiebooms, Willi Kreuder
  • Patent number: 6936683
    Abstract: The present invention relates to a selected process for the preparation of polyarylenevinylenes. These conjugated polymers are suitable for electroluminescence applications.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: August 30, 2005
    Assignee: Covion Organic Semiconductor GmbH
    Inventors: Dirk Vanderzande, Joanes Gelan, Albert van Breemen, Michael Van Der Borght, Anna Issaris, Laurence Lutsen, Margreet de Kok, Willi Kreuder
  • Patent number: 5917003
    Abstract: A process for producing polymers of .alpha., .omega.-unsaturated conjugated compounds, which includes reacting a compound of the formula (I),B--A--C (I)whereinB denotes a sp.sup.3 -hybridized carbon atom carrying at least one hydrogen atom,A denotes a conjugated-.pi.-system or a --CH.dbd.CH--group, andC denotes a carbon atom carrying at least one leaving group,with a base in a solvent. On reaction of the base with the compound of the formula (I) a polymer is formed as a by-product essentially soluble in the solvent and a solid is formed as a by-product which is essentially insoluble in the solvent. According to the process, chemically and thermally stable, high molecular weight polymers of high purity and high regularity are obtained in good yield. If the products of the process carry groups that undergo elimination, forming double bonds, high quality electroluminescent materials can be prepared.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: June 29, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Joanes Gelan, Dirk Vanderzande, Frank Louwet
  • Patent number: 5763539
    Abstract: A process for producing polymers of .alpha.,.omega.-unsaturated conjugated compounds, comprising reacting a precursor monomer of the formula I, ##STR1## wherein P denotes --SR.sup.3, --SO--R.sup.3, --SO.sub.2 --R.sup.3, --COOR.sup.3, --NO.sub.2, --CN, --CF.sub.3 or R.sup.3 ; L denotes --Cl, --Br, --I, --O-tosylate, --O-mesylate, --O-triflate, --(NR.sup.3.sub.3).sym. or --(SR.sup.3 R.sup.4).sym.; R.sup.1,R.sup.2 are the same or different and denote H, R.sup.3 or P; R.sup.3, R.sup.4 and A are as defined in the application. This reaction is characterized in that, on reaction of the base with the compound of the formula (I), a polymer is formed which is essentially soluble in said solvent, and a salt is formed as a by-product, which is essentially soluble in the solvent. That solvent comprises a compound selected from the group consisting of a) amides of the general formula (II) R.sup.5 --CO--NR.sup.6 H; b) amines of the general formula (III) R.sup.7.sub.2 --N--R.sup.8 ; c) sulfones of the general formula (IV) R.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: June 9, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Roland Stern, Dirk Vanderzande, Frank Louwet, Joanes Gelan, Anna Issaris, Michael van der Broght