公开(公告)号：US20200019827A1

公开(公告)日：2020-01-16

申请号：US16335698

申请日：2017-09-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： James W. HOWARD ,  Justin M. JOHNSON ,  Deepti PACHAURI ,  James B. SNYDER ,  Guruprasad SOMASUNDARAM

IPC: G06K19/06 ,  G06K7/14

Abstract: In some examples, an article includes a substrate and a plurality of optical element sets embodied on the substrate, wherein each optical element set includes a plurality of optical elements, wherein each respective optical element represents an encoded value in a set of encoded values, wherein the set of encoded values are differentiable based on visual differentiability of the respective optical elements, wherein each respective optical element set represents at least a portion of a message or error correction data to decode the message if one or more of the plurality of optical element sets are visually occluded, and wherein the optical element sets for the message and error correction data are spatially configured at the physical surface in a matrix such that the message is decodable from the substrate without optical elements positioned within at least one complete edge of the matrix that is visually occluded.

公开(公告)号：US20180239981A1

公开(公告)日：2018-08-23

申请号：US15754138

申请日：2016-08-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Justin M. JOHNSON ,  James W. HOWARD ,  Thomas J. DAHLIN ,  James B. SNYDER ,  James L.C. WERNESS, Jr.

IPC: G06K9/18 ,  G06K9/20 ,  G06K9/62 ,  G06K9/00

CPC classification number: G06K9/18 ,  G06K9/00442 ,  G06K9/2018 ,  G06K9/62 ,  G06K2209/01 ,  G06K2209/15

Abstract: The inventors of the present application developed novel retroreflective materials, and articles. One example of the present application is a retroreflective article, comprising a substrate and a machine-readable information disposed on the substrate, wherein the machine-readable information corresponds to a predetermined human-readable information.

公开(公告)号：US20190163980A1

公开(公告)日：2019-05-30

申请号：US16097652

申请日：2017-05-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Justin M. JOHNSON ,  James W. HOWARD ,  James B. SNYDER ,  Kui CHEN-HO ,  Suman K. PATEL ,  Travis L. POTTS ,  Carla H. BARNES ,  Tadesse G. NIGATU

IPC: G06K9/00 ,  G08G1/017

Abstract: In some examples, an optically active article includes a retroreflective substrate; and at least one security element disposed at the retroreflective substrate; an article message disposed at the retroreflective substrate, and wherein the at least one security element comprises validation information that is detectable outside a visible light spectrum, and wherein a combination of the article message and the validation information of the at least one security element indicates whether the optically active article is counterfeit.

公开(公告)号：US20180253616A1

公开(公告)日：2018-09-06

申请号：US15754155

申请日：2016-08-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Justin M. JOHNSON ,  James W. HOWARD ,  James B. SNYDER ,  Thomas J. DAHLIN

IPC: G06K9/20 ,  G06K9/32

CPC classification number: G06K9/2018 ,  G06K9/2036 ,  G06K9/2063 ,  G06K9/3216 ,  G06K9/3258 ,  G06K2209/15

Abstract: In some examples, a computing device receives an image of an optically active article that includes a set of one or more symbols of a symbol set, wherein at least one symbol of the set of one or more symbols comprises a set of encoding regions that are embedded with the symbol. In response to receiving the image, the computing device may determine that a particular image region of the image represents the at least one symbol. For encoding regions within the at least one symbol, the computing device may determine, based at least in part on the determination that the particular image region of the image represents the at least one symbol, whether the one or more encoding regions are active or inactive. The computing device may perform, based at least in part on whether the one or more encoding regions are active or inactive, one or more operations.

公开(公告)号：US20160178553A1

公开(公告)日：2016-06-23

申请号：US14976506

申请日：2015-12-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： G. Marco Bommarito ,  Justin M. JOHNSON ,  Kevin D. LANDGREBE

IPC: G01N27/22

CPC classification number: G01N27/225 ,  G01N27/223

Abstract: Moisture sensors that include a resonant circuit having a capacitive element and an inductive element, wherein the inductive element acts as an antenna; a conditionally conductive polymeric layer, wherein the conditionally conductive polymeric layer has a first level of conductivity when exposed to a first set of moisture conditions and has a second level of conductivity when exposed to a second set of moisture conditions; and an insulative layer disposed between the resonant circuit and the conditionally conductive polymeric layer.

Abstract translation: 包括具有电容元件和电感元件的谐振电路的水分传感器，其中感应元件充当天线; 条件导电聚合物层，其中所述条件导电聚合物层当暴露于第一组水分条件时具有第一水平的导电性，并且当暴露于第二组水分条件时具有第二级别的导电性; 以及设置在谐振电路和条件导电聚合物层之间的绝缘层。