Patents by Inventor Jacob N. Malkin

Jacob N. Malkin 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).

  • Silver halide material for optical memory devices with luminescent reading and methods for the treatment thereof
    Patent number: 6960426
    Abstract: This invention concerns a luminescent optical memory material and method of forming this material, including the encoding of information by a photographic process. The method involves the use of silver halide crystals of a defined size range, with the optional use of sensitizers, emulsion stabilizers, and other agents followed by the absorption of luminescent dyes on the developed silver particle to form a luminescent optical memory system. The method involves synthesis of a photographic emulsion with silver halide crystals of a defined size range, applying photographic emulsion to a substrate, exposing to light photochemical treatment and a process of transformation of the silver particles formed in the places exposed by light into luminescent particles. The method involves obtaining a multi-layer luminescent material for a three-dimensional optical memory devices.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: November 1, 2005
    Assignee: D Data Inc.
    Inventors: Eugene B. Levich, Jacob N. Malkin, Mark A. Alperovich, Boris M. Shapiro
  • 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
  • Silver halide material for optical memory devices with luminescent reading and methods for the treatment thereof
    Patent number: 6265140
    Abstract: This invention concerns a luminescent optical memory material and method of forming this material, including the encoding of information by a photographic process. The method involves the use of silver halide crystals of a defined size range, with the optional use of sensitizers, emulsion stabilizers, and other agents followed by the absorption of luminescent dyes on the developed silver particle to form a luminescent optical memory system. The method involves synthesis of a photographic emulsion with silver halide crystals of a defined size range, applying photographic emulsion to a substrate, exposing to light photochemical treatment and a process of transformation of the silver particles formed in the places exposed by light into luminescent particles. The method involves obtaining a multi-layer luminescent material for a three-dimensional optical memory devices.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: July 24, 2001
    Assignee: TriDStore IP, LLC
    Inventors: Eugene B. Levich, Jacob N. Malkin, Mark A. Alperovich, Boris M. Shapiro
  • Photo-chemical generation of stable fluorescent derivatives of Rhodamine B
    Patent number: 6027855
    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: December 12, 1997
    Date of Patent: February 22, 2000
    Assignee: OMD Devices LLC
    Inventors: Natalia T. Sokoluk, Vladimir V. Shubin, Eugene B. Levich, Jacob N. Malkin
  • 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
  • Polymeric photo-chromic composition
    Patent number: 5936878
    Abstract: The present invention relates to the field of photo-chromic materials, in particular, to photo-chromic compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for computers, multimedia applications and the like. In particular, nonfluorescent spiropyrane is transformed into fluorescent merocyanine by electromagnetic radiation.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: August 10, 1999
    Assignee: OMD Devices LLC
    Inventors: Vladimir Arsenov, Jacob N. Malkin