公开(公告)号：US20230355821A1

公开(公告)日：2023-11-09

申请号：US18246241

申请日：2021-10-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Hebrink ,  John A. Wheatley ,  Bharat R. Acharya

IPC: A61L2/26 ,  B32B27/30 ,  B32B27/08 ,  B32B27/18 ,  A61L2/10 ,  G02B5/20 ,  G02B5/08 ,  G02B1/04 ,  H01J61/02

CPC classification number: A61L2/26 ,  B32B27/304 ,  B32B27/08 ,  B32B27/18 ,  A61L2/10 ,  G02B5/208 ,  G02B5/0891 ,  G02B1/04 ,  H01J61/025 ,  B32B2255/20 ,  B32B2255/28 ,  B32B2264/1022 ,  B32B2255/10 ,  B32B2551/00 ,  A61L2202/11

Abstract: Multilayer articles are provided, including an absorbent layer and an ultraviolet mirror containing at least a plurality of alternating first and second optical layers. The absorbent layer absorbs ultraviolet light having a wavelength between at least 230 nanometers (nm) and 400 nm. The ultraviolet mirror reflects ultraviolet light in a wavelength range from 190 nm to 240 nm. Systems are also provided including a broadband UVC light source and a multilayer article. Devices are provided including a chamber, a broadband UVC light source located within the chamber, an absorbent layer in the chamber, and an ultraviolet mirror between the light source and absorbent layer. Methods of disinfecting a material are further provided, including obtaining a system or device, directing UVC light at the ultraviolet mirror, and exposing the material to ultraviolet light in a wavelength range from 190 nm to 240 nm, reflected by the ultraviolet mirror towards the material.

公开(公告)号：US20230252817A1

公开(公告)日：2023-08-10

申请号：US18014610

申请日：2021-07-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： David A. Rosen ,  Bharat R. Acharya

IPC: G06V40/13 ,  G02F1/1333

CPC classification number: G06V40/1318 ,  G02F1/13338 ,  G02F2203/11 ,  G02B5/0242

Abstract: An optical stack includes stacked first and second light redirecting layers, each light redirecting layer including a plurality of truncated first structures, each truncated first structure with opposing side surfaces making an angle of between about 60 degrees to about 120 degrees with each other and a substantially planar top surface joining the opposing side surfaces, and a plurality of untruncated second structures, each untruncated second structure with opposing side surfaces making an angle of between about 60 degrees to about 120 degrees with each other and meeting at peak, wherein the peaks of the untruncated second structures and the substantially planar top surfaces of the first truncated structures substantially lie in the same plane.

公开(公告)号：US20230228918A1

公开(公告)日：2023-07-20

申请号：US17923269

申请日：2021-04-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tri D. Pham ,  David A. Rosen ,  Qunyi Chen ,  Lisa A. DeNicola ,  Quinn D. Sanford ,  Matthew S. Cole ,  Bharat R. Acharya ,  Matthew E. Sousa ,  Robert D. Taylor ,  Benjamin J. Forsythe

IPC: G02B5/02

CPC classification number: G02B5/021 ,  G02B5/0268 ,  G02B5/0284 ,  G02B5/0294

Abstract: An optically diffusive film includes an optical substrate layer with opposing first and second major surfaces; and an optical layer disposed on the second major surface of the optical substrate layer and including a structured major surface having a plurality of spaced apart elongated structures elongated along a same first direction and arranged at a substantially uniform density, each elongated structure including a peak such that, in a plane of a cross-section of the elongated structure that is parallel to the first direction and comprises the peak, the elongated structure has a substantially flat top region; wherein for substantially normally incident light and a visible wavelength range and an infrared wavelength range, the optical substrate layer has an average total transmittance or reflectance of greater than about 60% in the visible wavelength range and an average specular transmittance of greater than about 60% in the infrared wavelength range.

公开(公告)号：US20230092755A1

公开(公告)日：2023-03-23

申请号：US17948572

申请日：2022-09-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Tonya D. Bonilla ,  Jessica E. DeMay ,  Stephen M. Kennedy ,  Aaron M. Marcella ,  Raj Rajagopal ,  Mark A. Roehrig ,  David A. Rosen ,  Jonah Shaver ,  Brett J. Sitter ,  Gregory W. Sitton ,  Michael L. Steiner ,  John A. Wheatley ,  Zhaohui Yang ,  Antonia E. Schaefer

IPC: G01N21/64 ,  G01N21/33 ,  G02B5/28 ,  G02B17/00

Abstract: A recycling optical cavity is defined at least by first and second optical films and is configured to receive a test material therein. The test material is configured to emit at least a second light having a second wavelength when irradiated with a first light having a first wavelength. For at least one of s- and p-polarized incident lights incident in an incident plane, and at the first and second wavelengths: at a first incident angle, the first optical film has respective optical transmittances T11(θ1) and T12(θ1), and the second optical film has respective optical transmittances T21(θ1) and T22(θ1), wherein T11(θ1)>T12(θ1), T21(θ1), T22(θ1); and at a second incident angle, the first optical film has respective optical transmittances T11(θ2) and T12(θ2), and the second optical film has respective optical transmittances T21(θ2) and T22(θ2), wherein T21(θ2)>T11(θ2), T12(θ2), T22(θ2).

公开(公告)号：US20230063818A1

公开(公告)日：2023-03-02

申请号：US17889755

申请日：2022-08-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Edward Scott Hagermoser ,  Fan Long

IPC: G06F3/042

Abstract: A display system includes visible light-emitting first devices and infrared light-emitting second devices, infrared light-detecting third devices, an optically reflecting first film between the third devices and the first and second devices, and an optically reflecting second film between the first film and third devices. The optically reflecting second film defines first openings aligned with the third devices in a one-to-one correspondence. The first devices emit a first wavelength in a visible wavelength range, and the second devices are configured to emit a second wavelength in an infrared wavelength range. The third devices are configured to detect the second wavelength. The first film has an average reflectance of greater than 60% for the visible wavelength range, and an average transmittance of greater than 50% for the infrared wavelength range. The second film has an average reflectance of greater than 60% for the visible and infrared wavelength ranges.

公开(公告)号：US11472992B2

公开(公告)日：2022-10-18

申请号：US16763168

申请日：2018-11-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Derek J. Dehn ,  Clinton P. Waller, Jr. ,  Bharat R. Acharya ,  Brandon A. Bartling ,  Audrey S. Forticaux ,  Jeremy M. Higgins ,  Satinder K. Nayar

IPC: C09K5/14 ,  B29C41/00 ,  B29C41/46 ,  C08K3/04 ,  C08K3/08 ,  C08K3/22 ,  C08K3/34 ,  C08K3/38 ,  B29K101/12

Abstract: Polymer matrix composite comprising a porous polymeric network; and a plurality of thermally conductive particles distributed within the polymeric network structure; wherein the thermally conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the thermally conductive particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a density of at least 0.3 g/cm3; and methods for making the same. The polymer matrix composites are useful, for example, in electronic devices.

公开(公告)号：US20220203661A1

公开(公告)日：2022-06-30

申请号：US17606538

申请日：2020-05-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Derek J. Dehn ,  Bradley L. Givot ,  Jaewon Kim ,  Yong K. Wu

IPC: B32B27/18 ,  B32B27/08 ,  C08J5/18 ,  B32B7/12 ,  B32B5/12 ,  B32B5/16

Abstract: A film includes a polymeric material and a plurality of particles dispersed therein. The polymeric material includes a plurality of elongate polymeric elements oriented along substantially a same first direction and interconnecting the particles. An elongate end portion of at least a first elongate polymeric element in the plurality of elongate polymeric elements conforms and is bonded to a first particle in the plurality of particles along an entire length of the elongate end portion. An elongate mid portion of at least a second elongate polymeric element in the plurality of elongate polymeric elements conforms and is bonded to a second particle in the plurality of particles along an entire length of the elongate mid portion with the second elongate polymeric element extending away from the second particle from opposite ends of the elongate mid portion. Multilayer films and processes are also described.

公开(公告)号：US20200347200A1

公开(公告)日：2020-11-05

申请号：US16760468

申请日：2018-11-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Derek J. Dehn ,  Clinton P. Waller, Jr. ,  Jeanne M. Bruss ,  Bharat R. Acharya ,  Brandon A. Bartling ,  Michael S. Graff ,  Noah O. Shanti ,  Fabian Stolzenburg ,  Satinder K. Nayar

IPC: C08J9/28 ,  C08J9/00 ,  C08K3/22

Abstract: Method of making a polymer matrix composite comprising a porous polymeric network structure; and a plurality of particles distributed within the polymeric network structure, the method comprising: combining a thermoplastic polymer, a solvent that the thermoplastic polymer is soluble in, and a plurality of particles to provide a slurry; forming the slurry in to an article; heating the article in an environment to retain at least 90 percent by weight of the solvent, based on the weight of the solvent in the slurry, and inducing phase separation of the thermoplastic polymer from the solvent to provide the polymer matrix composite.

公开(公告)号：US20190181461A1

公开(公告)日：2019-06-13

申请号：US16324519

申请日：2017-08-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian T. Weber ,  Brandon A. Bartling ,  Onur Sinan Yordem ,  Andrew T. Haug ,  John E. Abulu ,  Gregory M. Haugen ,  Kazuki Noda ,  Shunsuke Suzuki ,  Bharat R. Acharya ,  Daniel M. Pierpont ,  David J. Miller ,  Eric J. Iverson

IPC: H01M8/0273 ,  H01M8/0276 ,  H01M8/0297 ,  H01M8/18

Abstract: The present disclosure relates membrane-electrode assemblies and electrochemical cells and liquid flow batteries produced therefrom. The membrane-electrode assemblies include a first porous electrode; an ion permeable membrane, having a first major surface and an opposed second major surface; a first discontinuous transport protection layer disposed between the first porous electrode and the first major surface of the ion permeable membrane; and a first adhesive layer in contact with the first porous electrode and at least one of the first discontinuous transport protection layer and the ion permeable membrane. The first adhesive layer is disposed along the perimeter of the membrane-electrode assembly. The first porous electrode and first discontinuous transport protection layer, without the presence of the first adhesive layer, are not an integral structure and the membrane-electrode assembly is an integral structure

公开(公告)号：US10287413B2

公开(公告)日：2019-05-14

申请号：US15382834

申请日：2016-12-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Charles L. Bruzzone ,  Michael S. Graff ,  Derek J. Dehn ,  Clint J. Novotny

IPC: C08K3/34 ,  H01F1/26

Abstract: The present disclosure relates to polymer composites that include a thermoplastic polymer, network structure and a soft, ferromagnetic particulate material. The polymer composites may be used, for example, as magnetic flux field directional materials. The present invention also relates to methods of making the polymer composites, e.g. polymer composite sheets, of the present disclosure. In one embodiment, the present disclosure provides a polymer composite including a thermoplastic polymer, network structure; and a soft, ferromagnetic particulate material distributed within the thermoplastic polymer, network structure. The weight fraction of soft, ferromagnetic particulate material may be between 0.80 and 0.98, based on the total weight of the polymer composite and/or the thermoplastic polymer may have a number average molecular weight between 5×104 g/mol to 5×107 g/mol.