Patents by Inventor Oleg V. Grinevich

Oleg V. Grinevich 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).

  • Radiation curable inkjet composition
    Patent number: 6586494
    Abstract: A radiation-curable inkjet composition for forming 3-D models or images comprising a semi-crystalline or crystalline, low-shrinkage, radiation-curable oligomeric material, a photoinitiator, and a diluent, said inkjet composition having a viscosity of between about 10 to about 50 cps at at least one temperature between 50 to 140° C.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: July 1, 2003
    Assignee: Spectra Group Limited, Inc.
    Inventors: Alexandre Mejiritski, Oleg V. Grinevich, Dustin B. Martin, Douglas C. Neckers
  • Radiation curable inkjet composition
    Publication number: 20030032692
    Abstract: A radiation-curable inkjet composition for forming 3-D models or images comprising a semi-crystalline or crystalline, low-shrinkage, radiation-curable oligomeric material, a photoinitiator, and a diluent, said inkjet composition having a viscosity of between about 10 to about 50 cps at at least one temperature between 50 to 140° C.
    Type: Application
    Filed: August 8, 2001
    Publication date: February 13, 2003
    Inventors: Alexandre Mejiritski, Oleg V. Grinevich, Dustin B. Martin, Douglas C. Neckers
  • Method for producing selectively colorable printing plates
    Patent number: 6479217
    Abstract: A method for forming selectively colored printing plates using photosensitive recording elements is disclosed wherein the photosensitive recording element contains a photopolymerizable recording layer comprising a photopolymerizable monomer, a radical photoinitiator, a color former, and a color photoinitiator.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: November 12, 2002
    Assignee: Spectra Group Limited, Inc.
    Inventors: Oleg V. Grinevich, Alexander Mejiritski, Petr Serguievski, Douglas C. Neckers
  • Method for producing selectively colorable printing plates
    Publication number: 20020160310
    Abstract: A method for forming selectively colored printing plates using photosensitive recording elements is disclosed wherein the photosensitive recording element contains a photopolymerizable recording layer comprising a photopolymerizable monomer, a radical photoinitiator, a color former, and a color photoinitiator.
    Type: Application
    Filed: February 22, 2001
    Publication date: October 31, 2002
    Inventors: Oleg V. Grinevich, Alexander Mejiritski, Petr Serguievski, Douglas C. Neckers
  • Selectively colorable polymerizable compositions
    Patent number: 6433035
    Abstract: Selectively colorable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable polymerizable composition comprising a leucobase color former is irradiated with light of a particular wavelength and specific intensity for a specified duration. Exposure to actinic radiation cures the composition and activates the color former. Exposure to higher dosages of actinic radiation can bleach the composition. The irradiation dosage can be varied to selectively color the polymeric body whereby the resultant color of any particular area depends on the exposure dose received at that location. By varying the dose, a polymeric body can be prepared having distinctly colored elements at specific locations.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: August 13, 2002
    Assignee: Spectra Group Limited, Inc.
    Inventors: Oleg V. Grinevich, Douglas C. Neckers
  • Selectively colorable polymerizable compositions
    Patent number: 6309797
    Abstract: Selectively colorable polymerizable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable polymerizable composition comprising both a leucobase color former and a leuconitrile color former is irradiated with light of a particular wavelength and specific intensity for a specified duration. Exposure to actinic radiation cures the composition and activates the color formers. The irradiation dosage can be varied to selectively color the polymeric body whereby the resultant color of any particular area depends on the exposure dose received at that location. By varying the dose, a polymeric body can be prepared having distinctly colored elements at specific locations.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: October 30, 2001
    Assignee: Spectra Group Limited, Inc.
    Inventors: Oleg V. Grinevich, John H. Malpert, Alexandre Mejiritski, Douglas C. Neckers
  • Method for forming polymeric patterns, relief images and colored polymeric bodies using digital light processing technology
    Patent number: 6200646
    Abstract: A method for precisely and efficiently creating three dimensional bodies, relief images or patterns, colored bodies, or a combination of these using photopolymers, photocolorizable polymers or photoresponsive coatings, in one irradiation step as disclosed. In particular this invention describes a method of generating objects or patterns with differential control of properties (depth, pore size, color, density, mechanical strength, hardness, degree of cross-linking, tackiness, etc.) such that the property varies across the xy array.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: March 13, 2001
    Assignee: Spectra Group Limited, Inc.
    Inventors: Douglas C. Neckers, Kathleen G. Specht, Oleg V. Grinevich, Alexandre Mejiritski