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).
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Patent number: 6896944Abstract: 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: GrantFiled: June 29, 2001Date of Patent: May 24, 2005Assignee: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
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Patent number: 6881458Abstract: 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: GrantFiled: December 23, 2002Date of Patent: April 19, 2005Assignee: 3M Innovative Properties CompanyInventors: Bret W. Ludwig, Jeffrey O. Emslander, Caroline M. Ylitalo, Oh Sang Woo, Jennifer L. Lee, Richard L. Severance
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Patent number: 6846075Abstract: 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: GrantFiled: June 3, 2002Date of Patent: January 25, 2005Assignee: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
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Publication number: 20040258856Abstract: 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: ApplicationFiled: July 13, 2004Publication date: December 23, 2004Applicant: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
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Publication number: 20040213928Abstract: 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: ApplicationFiled: May 14, 2004Publication date: October 28, 2004Applicant: 3M Innovative Properties CompanyInventors: John M. Sebastian, Jeffrey O. Emslander, Mario A. Perez, Terry R. Hobbs, Robert S. Kody, Caroline M. Ylitalo, Robert D. Taylor, Oh Sang Woo
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Patent number: 6753080Abstract: 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: GrantFiled: January 29, 2002Date of Patent: June 22, 2004Assignee: 3M Innovative Properties CompanyInventors: John M. Sebastian, Jeffrey O. Ernslander, Mario A. Perez, Terry R. Hobbs, Robert S. Kody, Caroline M. Ylitalo, Robert D. Taylor, Oh Sang Woo
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Patent number: 6720042Abstract: 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: GrantFiled: April 18, 2001Date of Patent: April 13, 2004Assignee: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Jennifer L. Lee, Richard L. Severance, Oh Sang Woo, Eugene P. Janulis
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Publication number: 20030224150Abstract: 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: ApplicationFiled: December 23, 2002Publication date: December 4, 2003Inventors: Bret W. Ludwig, Jeffrey O. Emslander, Caroline M. Ylitalo, Oh Sang Woo, Jennifer L. Lee, Richard L. Severance
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Publication number: 20030224128Abstract: 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: ApplicationFiled: June 3, 2002Publication date: December 4, 2003Applicant: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
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Publication number: 20030054139Abstract: 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: ApplicationFiled: June 29, 2001Publication date: March 20, 2003Applicant: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Bret W. Ludwig, David J. Kinning, Ernest M. Rinehart, Jennifer L. Lee, Oh Sang Woo, Richard L. Severance, Richard F. Theissen
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Publication number: 20030021961Abstract: 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: ApplicationFiled: April 18, 2001Publication date: January 30, 2003Applicant: 3M Innovative Properties CompanyInventors: Caroline M. Ylitalo, Jennifer L. Lee, Richard L. Severance, Oh Sang Woo, Eugene P. Janulis