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：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.