Patents by Inventor Wolfgang Luttke

Wolfgang Luttke 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).

  • Laser dyes comprising fluorescent and laser dyestuff residues
    Patent number: 4165434
    Abstract: Novel dyestuffs comprising at least one laser dyestuff radical and at least one fluorescent dyestuff radical, where the fluorescent range of the fluorescent dyestuff radical overlaps the absorption range of the laser dyestuff radical and is linked with the laser dyestuff radical directly or via a bridge member having a length of at most 20 A in such a manner that the .pi. electron systems of the individual radicals are decoupled, are outstandingly effective and long lived when used in dyestuff lasers. The dyestuffs can be of the formula:X--(CR.sub.1 R.sub.2).sub.n --X--[(CR.sub.1 R.sub.2).sub.n --X].sub.mwhereinN is 0 or an integer from 1 up to a number corresponding to a chain length of 20 A,m is 0, 1, 2 or 3,X is a laser dyestuff radical L or a fluorescent dyestuff radical F andR.sub.1 and R.sub.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: August 21, 1979
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Fritz P. Schafer, Wolfgang Luttke