Patents by Inventor Josef Gold

Josef Gold 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).

  • Bifluorophoric perylene colourants
    Patent number: 5929239
    Abstract: Perylene-3,4:9,10-tetracarboxylic acid imides of the general formula I, including their optical antipodes and their mixtures, in particular their racemates ##STR1## wherein R.sup.1 to R.sup.14 are identical or different and are hydrogen or a radical selected from the group consisting of an unsubstituted or substituted carbocyclic aromatic radical, an unsubstituted or substituted heterocyclic aromatic radical, halogen, unsubstituted or substituted C.sub.1 -C.sub.18 alkyl, --OR.sup.15, --CN, --NR.sup.16 R.sup.17, --COR.sup.18, --NR.sup.19 COR.sup.18, --NR.sup.15 COOR.sup.18, --NR.sup.15 CONR.sup.16 R.sup.17, --NHSO.sub.2 R.sup.18, --SO.sub.2 R.sup.18, --SOR.sup.18, --SO.sub.2 OR.sup.18, --CONR.sup.16 R.sup.17 --N.dbd.NR.sup.20, --OCOR.sup.18 and --OCONHR.sup.18, where pairs of adjacent radicals can form a carbocyclic or heterocyclic ring,wherein R.sup.18 is C.sub.1 14 C.sub.18 alkyl, C.sub.6 -C.sub.10 aryl, or benzyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: July 27, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Heinz Langhals, Josef Gold