Containing Nonpolymeric Chromophore Patents (Class 430/270.15)
Organometallic containing (Class 430/270.16)
Having methine linkage (Class 430/270.18)
  • Photo-chemical generation of stable fluorescent derivatives of rhodamine B
    Patent number: 6280904
    Abstract: The present invention relates to the field of optical recording materials, in particular, fluorescent compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for READ ONLY MEMORY (ROM). In particular, nonfluorescent Rhodamine B lactams are photochemically transformed into fluorescent Rhodamine B derivatives.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: August 28, 2001
    Assignee: Tridstore IP, LLC
    Inventors: Natalia T. Sokoluk, Vladimir V. Shubin, Eugene B. Levich, Jacob N. Malkin