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公开(公告)号：US20250147208A1
公开(公告)日：2025-05-08
申请号：US18836922
申请日：2023-02-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Craig W. Lindsay , Anatoly Z. Rosenflanz , Billy J. Frederick , Jacqueline C. Rolf , Joseph D. Engebretson , Luke E. Heinzen
Abstract: Microspheres and retroreflective articles. In one embodiment, the microspheres comprise at least 30 wt. % alumina, at least 35 wt. % zirconia, and silica. In another embodiment, the microspheres comprise at least 30 wt. % alumina, at least 30 wt. % zirconia, and silica; wherein the wt. % zirconia is greater than the wt. % alumina.
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公开(公告)号：US20210070962A1
公开(公告)日：2021-03-11
申请号：US17099236
申请日：2020-11-16
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Matthew D. Wilding , Stephen L. Lieder , Eugene H. Carlson , Kenton D. Budd , Joseph D. Engebretson
IPC: C08K3/22 , C03C12/02 , G02B5/128 , E01F9/524 , C08K3/40 , C08K3/013 , C08L23/14 , C09D123/14 , C08L51/06 , C08L23/08
Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.
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公开(公告)号：US10858496B2
公开(公告)日：2020-12-08
申请号：US15759124
申请日：2016-09-06
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Matthew D. Wilding , Stephen L. Lieder , Eugene H. Carlson , Kenton D. Budd , Joseph D. Engebretson
IPC: C08K3/22 , C03C12/02 , C08K3/013 , C08K3/40 , E01F9/524 , G02B5/128 , C08L23/14 , C09D123/14 , C08L51/06 , C08L23/08
Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.
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公开(公告)号：US11286368B2
公开(公告)日：2022-03-29
申请号：US17099236
申请日：2020-11-16
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Matthew D. Wilding , Stephen L. Lieder , Eugene H. Carlson , Kenton D. Budd , Joseph D. Engebretson
IPC: C08K3/40 , C08K3/013 , G02B5/128 , E01F9/524 , C08K3/22 , C03C12/02 , C08L23/14 , C09D123/14 , C08L51/06 , C08L23/08
Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.
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公开(公告)号：US10605967B2
公开(公告)日：2020-03-31
申请号：US15502685
申请日：2015-08-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Ryan A. Bachman , Jimmie R. Baran, Jr. , Joseph D. Engebretson , James E. Garbe
Abstract: The present disclosure generally relates to retroreflective elements including a core and a plurality of glass or glass-ceramic beads adjacent to the core. The retroreflective elements further include a plurality of particles having a diameter that is less than the diameter of the glass or glass ceramic beads in the retroreflective elements. The present disclosure also generally relates to articles (including, for example, retroreflective roadway liquid pavement markings) including these retroreflective elements and methods of making and using these retroreflective elements.
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Patent Agency Ranking
公开(公告)号：US20180291175A1
公开(公告)日：2018-10-11
申请号：US15759124
申请日：2016-09-06
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Matthew D. Wilding , Stephen L. Lieder , Eugene H. Carlson , Kenton D. Budd , Joseph D. Engebretson
Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.
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公开(公告)号：US20170242165A1
公开(公告)日：2017-08-24
申请号：US15502685
申请日：2015-08-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Ryan A. Bachman , Jimmie R. Baran, JR. , Joseph D. Engebretson , James E. Garbe
IPC: G02B5/128 , C09D163/00 , C09C3/06 , C03C12/02 , C09D5/33
CPC classification number: G02B5/128 , C03C12/02 , C03C17/007 , C03C2217/42 , C09C3/063 , C09D5/004 , C09D163/00 , E01F9/524
Abstract: The present disclosure generally relates to retroreflective elements including a core and a plurality of glass or glass-ceramic beads adjacent to the core. The retroreflective elements further include a plurality of particles having a diameter that is less than the diameter of the glass or glass ceramic beads in the retroreflective elements. The present disclosure also generally relates to articles (including, for example, retroreflective roadway liquid pavement markings) including these retroreflective elements and methods of making and using these retroreflective elements.
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公开(公告)号：US20250155616A1
公开(公告)日：2025-05-15
申请号：US18836944
申请日：2023-02-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Craig W. Lindsay , Anatoly Z. Rosenflanz , Billy J. Frederick, JR. , Jacqueline C. Rolf , Joseph D. Engebretson , Luke E. Heinzen
IPC: G02B5/128 , C03C3/062 , C03C12/02 , C04B35/119 , C04B35/488 , E01F9/524
Abstract: Microspheres and retroreflective articles are described. In one embodiment, the microspheres comprise at least 40 wt. % alumina, at least 35 wt. % zirconia, and silica. In another embodiment, the microspheres comprise at least 80, 85, or 90 wt. % of a combination of alumina, zirconia, and silica and the microspheres have a density of at least 3.
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公开(公告)号：US12043723B2
公开(公告)日：2024-07-23
申请号：US17680602
申请日：2022-02-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Matthew D. Wilding , Stephen L Lieder , Eugene H. Carlson , Kenton D. Budd , Joseph D. Engebretson
IPC: C08K3/22 , C03C12/02 , C08K3/013 , C08K3/40 , C08L23/08 , C08L23/14 , C08L51/06 , C09D123/14 , E01F9/524 , G02B5/128
CPC classification number: C08K3/22 , C03C12/02 , C08K3/013 , C08K3/40 , C08L23/0853 , C08L23/14 , C08L51/06 , C09D123/14 , E01F9/524 , G02B5/128 , C08K2003/2241 , C08L2205/18 , Y10T428/252 , C09D123/14 , C08L51/06 , C08L23/0853 , C08K3/40 , C08K3/013 , C08L23/14 , C08L51/06 , C08L23/0853 , C08K3/40 , C08K3/013
Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.
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公开(公告)号：US20220177671A1
公开(公告)日：2022-06-09
申请号：US17680602
申请日：2022-02-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Matthew D. Wilding , Stephen L. Lieder , Eugene H. Carlson , Kenton D. Budd , Joseph D. Engebretson
IPC: C08K3/22 , C03C12/02 , G02B5/128 , E01F9/524 , C08K3/40 , C08K3/013 , C08L23/14 , C09D123/14 , C08L51/06 , C08L23/08
Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.
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