公开(公告)号：US11773282B2

公开(公告)日：2023-10-03

申请号：US16460520

申请日：2019-07-02

Applicant: South Dakota Board of Regents

Inventor： Jon Kellar ,  P. Stanley May ,  William Cross ,  Jeevan Meruga ,  Tyler Blumenthal

IPC: C09D11/50 ,  B41F17/00 ,  C09D11/037 ,  C09D11/322 ,  B42D25/382 ,  B41M3/14

CPC classification number: C09D11/50 ,  B41F17/00 ,  B42D25/382 ,  C09D11/037 ,  C09D11/322 ,  B41M3/14

Abstract: The present invention relates generally to using upconverting inks for producing highly-resolved patterns for inter alia, security applications. More specifically, the present invention relates to the use of sols (inks) and printing processes that produce well-defined printed features consisting of polymers impregnated with luminescent upconversion nanocrystals. The patterns printed using such inks and processes may exhibit defined shapes, characters of text, and various other types of images.

公开(公告)号：US10358569B2

公开(公告)日：2019-07-23

申请号：US14213350

申请日：2014-03-14

Applicant: South Dakota Board of Regents

Inventor： Jon Kellar ,  P. Stanley May ,  William Cross ,  Jeevan Meruga ,  Tyler Blumenthal

IPC: B41F17/00 ,  C09D11/50 ,  B42D25/382 ,  C09D11/037 ,  C09D11/322 ,  B41M3/14

Abstract: The present invention relates generally to using upconverting inks for producing highly-resolved patterns for, inter alia, security applications. More specifically, the present invention relates to the use of sols (inks) and printing processes that produce well-defined printed features consisting of polymers impregnated with luminescent upconversion nanocrystals. The patterns printed using such inks and processes may exhibit defined shapes, characters of text, and various other types of images.

公开(公告)号：US11292933B2

公开(公告)日：2022-04-05

申请号：US16248371

申请日：2019-01-15

Applicant: SOUTH DAKOTA BOARD OF REGENTS

Inventor： William Cross ,  Jeevan Meruga ,  Jon Kellar ,  P. Stanley May ,  Aravind Baride

IPC: C09K11/77 ,  C09D11/50 ,  C09D11/023 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38 ,  B41M3/14

Abstract: The present technology relates generally to a stable oil-in-water emulsion containing upconverting nanoparticles. In particular, the present technology relates to an ink formulation comprising a stable oil-in-water emulsion of upconverting nanoparticles useful for security printing. Preferably the upconverting nanoparticles comprise a β-Na(RE)F4 nanoparticle, wherein RE is a lanthanide, yttrium, or a combination or mixture thereof.

公开(公告)号：US10387698B2

公开(公告)日：2019-08-20

申请号：US15552486

申请日：2016-02-19

Applicant: South Dakota Board of Regents

Inventor： David Langerman ,  Jon Kellar ,  William Cross ,  P. Stanley May ,  Julian Brackins ,  Jeevan Meruga ,  Aravind Baride ,  John Rapp

IPC: G06K7/10 ,  C09D11/50 ,  B42D25/29 ,  C09D11/037 ,  B42D25/382 ,  C09D11/03 ,  C09K11/77 ,  G06K7/14 ,  G01N21/00 ,  G07D7/00 ,  G01N21/64 ,  H01L23/00

Abstract: An improved system and method for reading an upconversion response from nanoparticle inks is provided. A is adapted to direct a near-infrared excitation wavelength at a readable indicia, resulting in a near-infrared emission wavelength created by the upconverting nanoparticle inks. A short pass filter may filter the near-infrared excitation wavelength. A camera is in operable communication with the short pass filter and receives the near-infrared emission wavelength of the readable indicia. The system may further include an integrated circuit adapted to receive the near-infrared emission wavelength from the camera and generate a corresponding signal. A readable application may be in operable communication with the integrated circuit. The readable application receives the corresponding signal, manipulates the signal, decodes the signal into an output, and displays and/or stores the output.

公开(公告)号：US11568161B2

公开(公告)日：2023-01-31

申请号：US16884474

申请日：2020-05-27

Applicant: South Dakota Board of Regents

Inventor： David Langerman ,  Jon Kellar ,  William Cross ,  P. Stanley May ,  Julian Brackins ,  Jeevan Meruga ,  Aravind Baride ,  John Rapp

IPC: G06K7/10 ,  C09D11/50 ,  C09D11/037 ,  G01N21/00 ,  G07D7/00 ,  G07D7/005 ,  G07D7/0043 ,  G07D7/1205 ,  B42D25/29 ,  B42D25/382 ,  C09D11/03 ,  C09K11/77 ,  G06K7/14 ,  G01N21/64 ,  H01L23/00

Abstract: An improved system and method for reading an upconversion response from nanoparticle inks is provided. A is adapted to direct a near-infrared excitation wavelength at a readable indicia, resulting in a near-infrared emission wavelength created by the upconverting nanoparticle inks. A short pass filter may filter the near-infrared excitation wavelength. A camera is in operable communication with the short pass filter and receives the near-infrared emission wavelength of the readable indicia. The system may further include an integrated circuit adapted to receive the near-infrared emission wavelength from the camera and generate a corresponding signal. A readable application may be in operable communication with the integrated circuit. The readable application receives the corresponding signal, manipulates the signal, decodes the signal into an output, and displays and/or stores the output.

公开(公告)号：US10671823B2

公开(公告)日：2020-06-02

申请号：US16459941

申请日：2019-07-02

Applicant: South Dakota Board of Regents

Inventor： David Langerman ,  Jon Kellar ,  William Cross ,  P. Stanley May ,  Julian Brackins ,  Jeevan Meruga ,  Aravind Baride ,  John Rapp

IPC: G06K7/10 ,  C09D11/50 ,  C09D11/037 ,  G01N21/00 ,  G07D7/00 ,  G07D7/005 ,  G07D7/0043 ,  G07D7/1205 ,  B42D25/29 ,  B42D25/382 ,  C09D11/03 ,  C09K11/77 ,  G06K7/14 ,  G01N21/64 ,  H01L23/00

Abstract: An improved system and method for reading an upconversion response from nanoparticle inks is provided. A is adapted to direct a near-infrared excitation wavelength at a readable indicia, resulting in a near-infrared emission wavelength created by the upconverting nanoparticle inks. A short pass filter may filter the near-infrared excitation wavelength. A camera is in operable communication with the short pass filter and receives the near-infrared emission wavelength of the readable indicia. The system may further include an integrated circuit adapted to receive the near-infrared emission wavelength from the camera and generate a corresponding signal. A readable application may be in operable communication with the integrated circuit. The readable application receives the corresponding signal, manipulates the signal, decodes the signal into an output, and displays and/or stores the output.

公开(公告)号：US20200005004A1

公开(公告)日：2020-01-02

申请号：US16459941

申请日：2019-07-02

Applicant: South Dakota Board of Regents

Inventor： David Langerman ,  Jon Kellar ,  William Cross ,  P. Stanley May ,  Julian Brackins ,  Jeevan Meruga ,  Aravind Baride ,  John Rapp

IPC: G06K7/10 ,  B42D25/29 ,  B42D25/382 ,  C09D11/03 ,  C09D11/037 ,  C09D11/50 ,  C09K11/77 ,  G01N21/00 ,  G06K7/14 ,  G07D7/00

Abstract: An improved system and method for reading an upconversion response from nanoparticle inks is provided. A is adapted to direct a near-infrared excitation wavelength at a readable indicia, resulting in a near-infrared emission wavelength created by the upconverting nanoparticle inks. A short pass filter may filter the near-infrared excitation wavelength. A camera is in operable communication with the short pass filter and receives the near-infrared emission wavelength of the readable indicia. The system may further include an integrated circuit adapted to receive the near-infrared emission wavelength from the camera and generate a corresponding signal. A readable application may be in operable communication with the integrated circuit. The readable application receives the corresponding signal, manipulates the signal, decodes the signal into an output, and displays and/or stores the output.

公开(公告)号：US20200349330A1

公开(公告)日：2020-11-05

申请号：US16884474

申请日：2020-05-27

Applicant: South Dakota Board of Regents

Inventor： David Langerman ,  Jon Kellar ,  William Cross ,  P. Stanley May ,  Julian Brackins ,  Jeevan Meruga ,  Aravind Baride ,  John Rapp

IPC: G06K7/10 ,  C09D11/50 ,  C09D11/037 ,  G01N21/00 ,  G07D7/00 ,  G07D7/005 ,  G07D7/0043 ,  G07D7/1205 ,  B42D25/29 ,  B42D25/382 ,  C09D11/03 ,  C09K11/77 ,  G06K7/14

Abstract: An improved system and method for reading an upconversion response from nanoparticle inks is provided. A is adapted to direct a near-infrared excitation wavelength at a readable indicia, resulting in a near-infrared emission wavelength created by the upconverting nanoparticle inks. A short pass filter may filter the near-infrared excitation wavelength. A camera is in operable communication with the short pass filter and receives the near-infrared emission wavelength of the readable indicia. The system may further include an integrated circuit adapted to receive the near-infrared emission wavelength from the camera and generate a corresponding signal. A readable application may be in operable communication with the integrated circuit. The readable application receives the corresponding signal, manipulates the signal, decodes the signal into an output, and displays and/or stores the output.

公开(公告)号：US20190338153A1

公开(公告)日：2019-11-07

申请号：US16460520

申请日：2019-07-02

Applicant: South Dakota Board of Regents

Inventor： Jon Kellar ,  P. Stanley May ,  William Cross ,  Jeevan Meruga ,  Tyler Blumenthal

IPC: C09D11/50 ,  B42D25/382 ,  C09D11/322 ,  B41F17/00 ,  C09D11/037

Abstract: The present invention relates generally to using upconverting inks for producing highly-resolved patterns for inter alia, security applications. More specifically, the present invention relates to the use of sols (inks) and printing processes that produce well-defined printed features consisting of polymers impregnated with luminescent upconversion nanocrystals. The patterns printed using such inks and processes may exhibit defined shapes, characters of text, and various other types of images.