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公开(公告)号：US11726243B2
公开(公告)日：2023-08-15
申请号：US16957911
申请日：2018-12-27
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： David J. Lamb , Guanglei Du , Scotty A. Kopp , Suman K. Patel , John A. Wheatley
Abstract: A retroreflective article including a retroreflective layer including a structured surface that is opposite a major surface, a pressure sensitive adhesive that contacts at least a portion of the structured surface to form an optically inactive area that does not substantially retroreflect incident light and at least one low refractive index layer forming an optically active area that retroreflects incident light, wherein the optically active area comprises about 25% or less of the structured surface.
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公开(公告)号：US11602948B2
公开(公告)日：2023-03-14
申请号：US16060500
申请日：2016-12-06
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tadesse G. Nigatu , Suman K. Patel , Craig A. Schmidt , Lee A. Pavelka , Neeraj Sharma
IPC: B42D25/23 , B42D25/24 , B42D25/29 , B42D25/425 , B42D25/382 , B42D25/41 , B42D25/324
Abstract: Techniques are described in which articles (e.g., security documents, traffic signage and personal protective equipment) are formed to include an infrared absorptive material. In some instances, the infrared absorptive material includes a reduced tungsten oxide, such as cesium tungsten oxide, calcium tungsten oxide, potassium tungsten oxide, or the like, and exposed to radiation such that one or more regions of the security document has a modified appearance, thereby providing a visual marking or information on the article. Example articles include at least one layer including a polymer and an infrared absorptive material including a reduced tungsten oxide. The layer includes a radiation-treated region that exhibits a first appearance under visible light and at least one non-radiation-treated region that exhibits a second, different appearance under visible light. The at least one radiation-treated region may be formed by exposing the at least one radiation-treated region to infrared light to change at least one property of the reduced tungsten oxide in the radiation-treated region compared to the reduced tungsten oxide in the non-radiation-treated region. The first appearance may be whiter than the second appearance.
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公开(公告)号：US11132554B2
公开(公告)日：2021-09-28
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
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.
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公开(公告)号：US10731045B2
公开(公告)日：2020-08-04
申请号：US15760885
申请日：2016-09-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Neeraj Sharma , Eric J. Borchers , Suman K. Patel
IPC: C09D11/101 , C09D11/037 , B41M3/00 , B41M7/00 , H05K1/02 , H05K1/09 , H05K1/16 , H05K3/12
Abstract: Curable printing ink compositions include a visible light transparent, UV-curable binder composition and a visible light transparent, and infrared light absorbing inorganic composition. The infrared light absorbing inorganic composition can include infrared absorbing nanoparticles. The ink compositions are capable of flexographic printing at room temperature to a thickness of at least 1.0 micrometer. The cured ink composition has an infrared absorbance of at least 50%. The ink compositions can be printed in patterns of geometric features and cured to form articles.
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Patent Agency Ranking
公开(公告)号：US20180364403A1
公开(公告)日：2018-12-20
申请号：US16060530
申请日：2016-12-06
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Neeraj Sharma , Suman K. Patel , Tadesse G. Nigatu , Lee A. Pavelka
Abstract: A prismatic retroreflective sheeting includes a structured layer that includes a plurality of cube corner elements including a reduced tungsten oxide, a radiation-treated region, and a non-radiation-treated region. The prismatic retroreflective sheeting includes also includes an information-containing layer above the structured layer. The information-containing layer includes at least one indicia defining an edge. The radiation-treated region of the structured layer is adjacent and below at least part of the edge of the at least one indicia.
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26.发明申请公开(公告)号：US20180203168A1
公开(公告)日：2018-07-19
申请号：US15577022
申请日：2016-06-14
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Martin B. Wolk , Thomas J. Metzler , Samuel J. Carpenter , Denis Terzic , Mitchell T. Nommensen , Suman K. Patel , Mikhail L. Pekurovsky , Donald G. Peterson , Terry O. Collier
CPC classification number: G02B5/124 , B32B37/025 , E06B3/6604 , G02B5/045 , H01L51/5275
Abstract: The present disclosure relates to micro-optical assemblies containing at least one optical element adhered to a receptor substrate, e.g. a transparent receptor substrate, the receptor substrate contains at least one graphics layer. The micro-optical assemblies include both functional micro-optical structures that can alter, for example, incident light, and a graphic layer, which includes at least one graphic, e.g. a graphic design, which may include color, patterns, imagery, indicia and the like. The combination of the micro-optical elements with the graphic of the graphics layer can provide unique light altering assemblies that have graphic designs that may be functional, e.g. to display a message, and/or have aesthetic value. The micro-optical assemblies of the present disclosure are useful in a variety of applications which include, but are not limited to, display and graphics applications and architectural glass applications. The present disclosure also provides a method of making the micro-optical assemblies of the present disclosure.
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27.发明申请公开(公告)号：US20180180779A1
公开(公告)日：2018-06-28
申请号：US15887479
申请日：2018-02-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael Benton Free , Bimal V. Thakkar , Mieczyslaw H. Mazurek , Kenneth L. Smith , Suman K. Patel , William D. Coggio , Mikhail L. Pekurovsky
IPC: G02B5/124
CPC classification number: G02B5/124 , Y10T156/10 , Y10T428/23 , Y10T428/24496 , Y10T428/24612 , Y10T428/31504
Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
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公开(公告)号：US20180095198A1
公开(公告)日：2018-04-05
申请号：US15816725
申请日：2017-11-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Suman K. Patel , Bruce D. Orensteen , Mikhail L. Pekurovsky
CPC classification number: G02B5/124 , B32B37/14 , G02B5/208 , Y10T156/10
Abstract: The present disclosure relates to prismatic retroreflective articles that includes a security mark and to methods of making such articles.
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公开(公告)号：US20150346400A1
公开(公告)日：2015-12-03
申请号：US14825497
申请日：2015-08-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Suman K. Patel , William D. Coggio , Mikhail L. Pekurovsky , Kenneth L. Smith , Michael B. Free , William B. Kolb
Abstract: Retroreflective articles and constructions are disclosed. One exemplary retroreflective article or construction includes a retroreflective layer and a low refractive index layer. In one exemplary embodiment, the low refractive index layer is adjacent to at least a portion of a retroreflective structured major surface of the retroreflective layer.
Abstract translation: 公开了逆反射制品和结构。 一种示例性的逆反射制品或结构包括回射层和低折射率层。 在一个示例性实施例中，低折射率层与回射层的逆反射结构化主表面的至少一部分相邻。
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