Patents by Inventor John Stephen Locke
John Stephen Locke 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: 11858252Abstract: The invention pertains to a photosensitive element, particularly a photopolymerizable printing form precursor; a method of preparing the photosensitive element to form a printing form for use in relief printing; and, a process of making the photosensitive element. The printing form precursor includes a layer of a photosensitive composition, a digital layer that is adjacent to a side of the photosensitive layer, and a cell pattern layer that is disposed between the photosensitive layer and the digital layer. The cell pattern layer includes a plurality of features in which each feature an area between 5 to 750 square microns and is composed of an ink that is opaque to actinic radiation and transparent to infrared radiation. Since the cell pattern layer is integral with the printing form precursor, digital imaging can occur rapidly with relatively low resolution optics to form a mask without needing to also form a microcell pattern of the digital layer.Type: GrantFiled: September 7, 2022Date of Patent: January 2, 2024Assignee: DUPONT ELECTRONICS, INC.Inventors: Robert M Blomquist, Bradley K Taylor, John Stephen Locke, Mark A Hackler
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Publication number: 20230001684Abstract: The invention pertains to a photosensitive element, particularly a photopolymerizable printing form precursor; a method of preparing the photosensitive element to form a printing form for use in relief printing; and, a process of making the photosensitive element. The printing form precursor includes a layer of a photosensitive composition, a digital layer that is adjacent to a side of the photosensitive layer, and a cell pattern layer that is disposed between the photosensitive layer and the digital layer. The cell pattern layer includes a plurality of features in which each feature an area between 5 to 750 square microns and is composed of an ink that is opaque to actinic radiation and transparent to infrared radiation. Since the cell pattern layer is integral with the printing form precursor, digital imaging can occur rapidly with relatively low resolution optics to form a mask without needing to also form a microcell pattern of the digital layer.Type: ApplicationFiled: September 7, 2022Publication date: January 5, 2023Inventors: Robert M Blomquist, BRADLEY K TAYLOR, JOHN STEPHEN LOCKE, MARK A HACKLER
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Patent number: 11465402Abstract: A photosensitive element, particularly a photopolymerizable printing form precursor; a method of preparing the photosensitive element to form a printing form for use in relief printing; and a process of making the photosensitive element are disclosed. The printing form precursor includes a layer of a photosensitive composition, a digital layer that is adjacent to a side of the photosensitive layer, and a cell pattern layer that is disposed between the photosensitive layer and the digital layer. The cell pattern layer includes a plurality of features, and is composed of an ink that is opaque to actinic radiation and transparent to infrared radiation. Since the cell pattern layer is integral with the printing form precursor, digital imaging can occur rapidly with relatively low resolution optics to form a mask without needing to also form a microcell pattern of the digital layer.Type: GrantFiled: April 24, 2020Date of Patent: October 11, 2022Assignee: DUPONT ELECTRONICS, INC.Inventors: Robert M Blomquist, Bradley K Taylor, John Stephen Locke, Mark A Hackler
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Publication number: 20200254749Abstract: The invention pertains to a photosensitive element, particularly a photopolymerizable printing form precursor; a method of preparing the photosensitive element to form a printing form for use in relief printing; and, a process of making the photosensitive element. The printing form precursor includes a layer of a photosensitive composition, a digital layer that is adjacent to a side of the photosensitive layer, and a cell pattern layer that is disposed between the photosensitive layer and the digital layer. The cell pattern layer includes a plurality of features in which each feature an area between 5 to 750 square microns and is composed of an ink that is opaque to actinic radiation and transparent to infrared radiation. Since the cell pattern layer is integral with the printing form precursor, digital imaging can occur rapidly with relatively low resolution optics to form a mask without needing to also form a microcell pattern of the digital layer.Type: ApplicationFiled: April 24, 2020Publication date: August 13, 2020Inventors: Robert M. Blomquist, Bradley K. Taylor, John Stephen Locke, Mark A. Hackler
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Patent number: 10668711Abstract: The invention pertains to a photosensitive element, particularly a photopolymerizable printing form precursor; a method of preparing the photosensitive element to form a printing form for use in relief printing; and, a process of making the photosensitive element. The printing form precursor includes a layer of a photosensitive composition, a digital layer that is adjacent to a side of the photosensitive layer, and a cell pattern layer that is disposed between the photosensitive layer and the digital layer. The cell pattern layer includes a plurality of features, and is composed of an ink that is opaque to actinic radiation and transparent to infrared radiation. Since the cell pattern layer is integral with the printing form precursor, digital imaging can occur rapidly with relatively low resolution optics to form a mask without needing to also form a microcell pattern of the digital layer.Type: GrantFiled: May 26, 2016Date of Patent: June 2, 2020Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Robert M Blomquist, Bradley K Taylor, John Stephen Locke, Mark A Hackler
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Patent number: 9713919Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.Type: GrantFiled: July 29, 2015Date of Patent: July 25, 2017Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Robert M Blomquist, John Stephen Locke, Chi W Chiu
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Publication number: 20160355004Abstract: The invention pertains to a photosensitive element, particularly a photopolymerizable printing form precursor; a method of preparing the photosensitive element to form a printing form for use in relief printing; and, a process of making the photosensitive element. The printing form precursor includes a layer of a photosensitive composition, a digital layer that is adjacent to a side of the photosensitive layer, and a cell pattern layer that is disposed between the photosensitive layer and the digital layer. The cell pattern layer includes a plurality of features in which each feature an area between 5 to 750 square microns and is composed of an ink that is opaque to actinic radiation and transparent to infrared radiation. Since the cell pattern layer is integral with the printing form precursor, digital imaging can occur rapidly with relatively low resolution optics to form a mask without needing to also form a microcell pattern of the digital layer.Type: ApplicationFiled: May 26, 2016Publication date: December 8, 2016Inventors: ROBERT M BLOMQUIST, BRADLEY K TAYLOR, JOHN STEPHEN LOCKE, MARK A HACKLER
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Publication number: 20150328878Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.Type: ApplicationFiled: July 29, 2015Publication date: November 19, 2015Inventors: ROBERT M. BLOMQUIST, JOHN STEPHEN LOCKE, CHI W. CHIU
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Patent number: 9134612Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.Type: GrantFiled: March 7, 2013Date of Patent: September 15, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Robert M Blomquist, John Stephen Locke, Chi W Chiu
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Publication number: 20130255513Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.Type: ApplicationFiled: March 7, 2013Publication date: October 3, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: ROBERT M. BLOMQUIST, John Stephen Locke, Chi W. Chiu
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Patent number: 7449055Abstract: The present invention pertains to a dye-based inkjet ink set with a lightfast cyan ink and, more particularly, to a dye-based inkjet ink set suitable for printing on fabrics, especially polyamide fabric. The present invention also pertains to a method for printing a polyamide fabric with the dye-based inkjet ink set, and a polyamide fabric so printed.Type: GrantFiled: August 2, 2007Date of Patent: November 11, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: John C. Hornby, Kuo Hsiung Kung, John Stephen Locke, James Walter Wheeler
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Publication number: 20080032098Abstract: The present invention pertains to a dye-based inkjet ink set with a lightfast cyan ink and, more particularly, to a dye-based inkjet ink set suitable for printing on fabrics, especially polyamide fabric. The present invention also pertains to a method for printing a polyamide fabric with the dye-based inkjet ink set, and a polyamide fabric so printed.Type: ApplicationFiled: August 2, 2007Publication date: February 7, 2008Inventors: John C. Hornby, Kuo Hsiung Kung, John Stephen Locke, James Walter Wheeler
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Patent number: 7282089Abstract: The present invention pertains to a dye-based inkjet ink set and, more particularly, to a dye-based inkjet ink set suitable for printing on polyamide fabric.Type: GrantFiled: November 4, 2005Date of Patent: October 16, 2007Assignee: E.I. du Pont de Nemours and CompanyInventors: James Walter Wheeler, John Stephen Locke, Samit N. Chevli, Sandra Laurine Issler, Alicia Marie Walsh
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Patent number: 7233413Abstract: This invention pertains to a computer-implemented method and program for the comparison of color gamuts. Using first and second collections of sample color points respective hulls are created in a color space. The set of all of the points disposed on the surface of the a hull or within the volume enclosed thereby represents the respective color gamut. The hulls are combined, preferably by a Boolean operation, to create a third hull in the color space representing at least one region of overlap or at least one region of exclusion between the first color gamut and the second color gamut. The volume of at least one of the hulls may be calculated and compared to the volume of the region of overlap and/or the region of exclusion.Type: GrantFiled: November 22, 2002Date of Patent: June 19, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: David Edward Jones, John Stephen Locke
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Patent number: 7211129Abstract: The present invention pertains to a dye-based inkjet ink set and, more particularly, to a dye-based inkjet ink set suitable for printing on polyamide fabric. The present invention also pertains to a method for printing a polyamide fabric with the dye-based inkjet ink set, and a polyamide fabric so printed.Type: GrantFiled: July 1, 2005Date of Patent: May 1, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: James Walter Wheeler, John Stephen Locke, Samit N. Chevli, Sandra Laurine Issler, Alicia Marie Walsh
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Publication number: 20040196347Abstract: This invention pertains to ink jet printing and more particularly to ink jet printing of wide format substrates such as textiles, and to inks and inks sets suitable for use in such printing.Type: ApplicationFiled: April 27, 2004Publication date: October 7, 2004Inventors: Martin E. Redding, John Stephen Locke, Robert Clifton Strum, Tony Z. Liang, Michael Lee Rudolph, Waifong Liew Anton, Hisanori Omura
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Publication number: 20040196346Abstract: This invention pertains to ink jet printing and more particularly to ink jet printing of wide format substrates such as textiles, and to inks and inks sets suitable for use in such printing.Type: ApplicationFiled: April 27, 2004Publication date: October 7, 2004Inventors: Martin E. Redding, John Stephen Locke, Robert Clifton Strum, Tony Z. Liang, Michael Lee Rudolph, Walfong Liew Anton, Hisanori Omura
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Patent number: 6742869Abstract: A system and method are disclosed for ink jet printing of wide format substrates such as textiles in a manner to simulate screen printing, in which image data in one or more acceptable formats is input, transformed into a suitable L*a*b* file format, further converted into a driver format for a printer, then communicated to such printer. Optionally, the color gamut of the image in the L*a*b* file format is checked against an estimated screen gamut of a screen printer, and limited to the estimated screen gamut as required.Type: GrantFiled: October 4, 2002Date of Patent: June 1, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Martin E. Redding, John Stephen Locke, Robert Clifton Strum, Tony Z. Liang, Michael Lee Rudolph, Waifong Liew Anton, Hisanori Omura
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Publication number: 20040100643Abstract: This invention pertains to a computer-implemented method and program for the comparison of color gamuts.Type: ApplicationFiled: November 22, 2002Publication date: May 27, 2004Inventors: David Edward Jones, John Stephen Locke
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Publication number: 20030128246Abstract: This invention pertains to ink jet printing and more particularly to ink jet printing of wide format substrates such as textiles, and to inks and inks sets suitable for use in such printing.Type: ApplicationFiled: October 4, 2002Publication date: July 10, 2003Inventors: Martin E. Redding, John Stephen Locke, Robert Clifton Strum, Tony Z. Liang, Michael Lee Rudolph, Waifong Liew Anton, Hisanori Omura