Patents by Inventor Oh Sang Woo

Oh Sang Woo 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).

  • Patent number: 6896944
    Abstract: The present invention relates to an imaged article comprising a substrate having a primed surface layer. The primed surface layer is comprised of a base polymer having a solubility parameter, molecular weight (Mw) and glass transition temperature within a specified range. The presence of the primer improves the overall image quality by improving at least one property including ink uptake, dot gain, color density and/or ink adhesion. Preferred primer compositions are soluble at least in part in the ink composition resulting in an increase in ink layer thickness that further improves the durability and/or day/night color balance. A variety of substrates may be primed including various sheeting for traffic control signage and commercial graphic films for advertising and promotional displays.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 24, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
  • Patent number: 6881458
    Abstract: The invention relates to articles comprising a substrate comprising an ink receptive layer and an ink-jet printed image as well as methods of ink jet printing. The ink receptive layer comprises certain urethane-containing polymers and blends.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: April 19, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Bret W. Ludwig, Jeffrey O. Emslander, Caroline M. Ylitalo, Oh Sang Woo, Jennifer L. Lee, Richard L. Severance
  • Patent number: 6846075
    Abstract: The present invention relates to an imaged article comprising a substrate having a primed surface layer. The primed surface layer is comprised of a base polymer having a solubility parameter, molecular weight (Mw) and glass transition temperature within a specified range. The presence of the primer improves the overall image quality by improving at least one property including ink uptake, dot gain, color density and/or ink adhesion. Preferred primer compositions are soluble at least in part in the ink composition resulting in an increase in ink layer thickness that further improves the durability and/or day/night color balance. A variety of substrates may be primed including various sheeting for traffic control signage and commercial graphic films for advertising and promotional displays.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: January 25, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
  • Publication number: 20040258856
    Abstract: The present invention relates to an imaged article comprising a substrate having a primed surface layer. The primed surface layer is comprised of a base polymer having a solubility parameter, molecular weight (Mw) and glass transition temperature within a specified range. The presence of the primer improves the overall image quality by improving at least one property including ink uptake, dot gain, color density and/or ink adhesion. Preferred primer compositions are soluble at least in part in the ink composition resulting in an increase in ink layer thickness that further improves the durability and/or day/night color balance. A variety of substrates may be primed including various sheeting for traffic control signage and commercial graphic films for advertising and promotional displays.
    Type: Application
    Filed: July 13, 2004
    Publication date: December 23, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
  • Publication number: 20040213928
    Abstract: A receptor medium with an oriented film having at least one microfibrillated surface is described. The receptor medium can receive jettable materials, which include inks, adhesives, particulate dispersions, electrically, thermally or magnetically modifiable materials, biological fluids, chemical reagents and combinations thereof. The microfibrillated surface provides good ink receptive properties particularly for solvent based inks.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 28, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: John M. Sebastian, Jeffrey O. Emslander, Mario A. Perez, Terry R. Hobbs, Robert S. Kody, Caroline M. Ylitalo, Robert D. Taylor, Oh Sang Woo
  • Patent number: 6753080
    Abstract: A receptor medium with an oriented film having at least one microfibrillated surface is described. The receptor medium can receive jettable materials, which include inks, adhesives, particulate dispersions, electrically, thermally or magnetically modifiable materials, biological fluids, chemical reagents and combinations thereof. The microfibrillated surface provides good ink receptive properties particularly for solvent based inks.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: June 22, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: John M. Sebastian, Jeffrey O. Ernslander, Mario A. Perez, Terry R. Hobbs, Robert S. Kody, Caroline M. Ylitalo, Robert D. Taylor, Oh Sang Woo
  • Patent number: 6720042
    Abstract: The present invention relates to primed substrates comprising radiation cured ink jetted images and methods of ink jet printing radiation curable inks that employ applying a primer. The imaged articles are durable for outdoor usage. A variety of polymeric sheets may be primed including various sheeting for signage and commercial graphic films for advertising and promotional displays.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: April 13, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Jennifer L. Lee, Richard L. Severance, Oh Sang Woo, Eugene P. Janulis
  • Publication number: 20030224150
    Abstract: The invention relates to articles comprising a substrate comprising an ink receptive layer and an ink-jet printed image as well as methods of ink jet printing. The ink receptive layer comprises certain urethane-containing polymers and blends.
    Type: Application
    Filed: December 23, 2002
    Publication date: December 4, 2003
    Inventors: Bret W. Ludwig, Jeffrey O. Emslander, Caroline M. Ylitalo, Oh Sang Woo, Jennifer L. Lee, Richard L. Severance
  • Publication number: 20030224128
    Abstract: The present invention relates to an imaged article comprising a substrate having a primed surface layer. The primed surface layer is comprised of a base polymer having a solubility parameter, molecular weight (Mw) and glass transition temperature within a specified range. The presence of the primer improves the overall image quality by improving at least one property including ink uptake, dot gain, color density and/or ink adhesion. Preferred primer compositions are soluble at least in part in the ink composition resulting in an increase in ink layer thickness that further improves the durability and/or day/night color balance. A variety of substrates may be primed including various sheeting for traffic control signage and commercial graphic films for advertising and promotional displays.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 4, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
  • Publication number: 20030054139
    Abstract: The present invention relates to an imaged article comprising a substrate having a primed surface layer. The primed surface layer is comprised of a base polymer having a solubility parameter, molecular weight (Mw) and glass transition temperature within a specified range. The presence of the primer improves the overall image quality by improving at least one property including ink uptake, dot gain, color density and/or ink adhesion. Preferred primer compositions are soluble at least in part in the ink composition resulting in an increase in ink layer thickness that further improves the durability and/or day/night color balance. A variety of substrates may be primed including various sheeting for traffic control signage and commercial graphic films for advertising and promotional displays.
    Type: Application
    Filed: June 29, 2001
    Publication date: March 20, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
  • Publication number: 20030021961
    Abstract: The present invention relates to primed substrates comprising radiation cured ink jetted images and methods of ink jet printing radiation curable inks that employ applying a primer. The imaged articles are durable for outdoor usage. A variety of polymeric sheets may be primed including various sheeting for signage and commercial graphic films for advertising and promotional displays.
    Type: Application
    Filed: April 18, 2001
    Publication date: January 30, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Caroline M. Ylitalo, Jennifer L. Lee, Richard L. Severance, Oh Sang Woo, Eugene P. Janulis