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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.
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公开(公告)号：US11806657B2
公开(公告)日：2023-11-07
申请号：US17467155
申请日：2021-09-03
Applicant: South Dakota Board of Regents
Inventor： Bernado Moreno Baqueiro Sansao , Jon Kellar , William Cross , Albert Romkes
CPC classification number: B01D47/05 , B01D45/10 , B01D49/003 , B01D2202/00
Abstract: An impact test apparatus can be used to determine particle interfacial energies with varying relative air humidity. It was observed that capillary condensation increased the adhesive forces of hydrophilic materials. A systems humidity separation window was identified and the differences in interfacial energy for a hydrophilic surface and for a hydrophobic surface can be exploited in order to achieve the separation of particles. Separation and concentration of particles, particularly particles within a mineral ore body, can be obtained.
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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.
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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.
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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.
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Patent Agency Ranking
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.
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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.
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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.
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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.
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公开(公告)号：US20220072466A1
公开(公告)日：2022-03-10
申请号：US17467155
申请日：2021-09-03
Applicant: South Dakota Board of Regents
Inventor： Bernado Moreno Baqueiro Sansao , Jon Kellar , William Cross , Albert Romkes
Abstract: An impact test apparatus can be used to determine particle interfacial energies with varying relative air humidity. It was observed that capillary condensation increased the adhesive forces of hydrophilic materials. A systems humidity separation window was identified and the differences in interfacial energy for a hydrophilic surface and for a hydrophobic surface can be exploited in order to achieve the separation of particles. Separation and concentration of particles, particularly particles within a mineral ore body, can be obtained.
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