Patents Assigned to Memory Devices, Inc.
  • Photochemical generation of stable fluorescent amines from peri-phenoxiderivatives of polycyclic P-quinones
    Patent number: 5945252
    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). More particularly, nonfluorescent peri-phenoxiderivatives of polycyclic quinones are transformed into fluorescent aminoderivatives of anaquinones.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: August 31, 1999
    Assignee: Memory Devices, Inc.
    Inventors: Natalia T Sokoluk, Vladimir V. Shubin, Eugene B. Levich, Jacob N. Malkin
  • Photochromic material for electro-optic storage memory
    Patent number: 5847141
    Abstract: The present invention relates to the field of photochromic material, in particular of photochromic compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for computers, multimedia applications and the like. The photochromic compounds have the following formula: ##STR1## wherein the substituents are defined in the specification.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: December 8, 1998
    Assignee: Memory Devices, Inc.
    Inventor: Jacob Malkin