Patents by Inventor Yoshiteru Kakinuma
Yoshiteru Kakinuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11795349Abstract: The disclosed adhesive sheet exhibits high anchoring performance and where separation between the substrate and the adhesive layer substantially does not occur when unwinding or re-peeling in actual applications. The adhesive sheet comprises a substrate including a urethane polymer component at least at a portion of a surface and a silicone adhesive layer that is in contact with the urethane polymer component, wherein the urethane polymer having a chain extender-derived hard segment and a polyoxyalkylene polyol-derived soft segment.Type: GrantFiled: January 3, 2019Date of Patent: October 24, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Yoshiteru Kakinuma, Aizoh Sakurai
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Patent number: 10968370Abstract: An article 10 is provided with an adhesive layer 14 that includes an adhesive, a release layer 12 that is stacked on the adhesive layer 14, and an air layer 16 that is interposed between the adhesive layer 14 and the release layer 12. On a surface 12a of the release layer 12 that opposes the adhesive layer 14, microprotrusions 20 that contact the adhesive layer 14 with tips 20a are provided. The microprotrusions 20 are provided with a wall-shaped portion 22 having a shape that at least partially surrounds the air layer 16 between the adhesive layer 14 and the release layer 12. The wall-shaped portion 22 protects a main portion 14a of the adhesive layer 14 that is adjacent to the air layer 16 from contamination. By selecting a shape, dimensions, and the like of the micro protrusions 20, a release force of the release layer 12 can be adjusted to a desired range.Type: GrantFiled: June 3, 2016Date of Patent: April 6, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Aizoh Sakurai, Yoshiteru Kakinuma, Bing Liu
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Publication number: 20210054240Abstract: The disclosed adhesive sheet exhibits high anchoring performance and where separation between the substrate and the adhesive layer substantially does not occur when unwinding or re-peeling in actual applications. The adhesive sheet comprises a substrate including a urethane polymer component at least at a portion of a surface and a silicone adhesive layer that is in contact with the urethane polymer component, wherein the urethane polymer having a chain extender-derived hard segment and a polyoxyalkylene polyol-derived soft segment.Type: ApplicationFiled: January 3, 2019Publication date: February 25, 2021Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: YOSHITERU KAKINUMA, AIZOH SAKURAI
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Publication number: 20200369921Abstract: The disclosed adhesive sheet that exhibits high anchoring performance and where separation between the substrate and the adhesive layer substantially does not occur when unwinding or re-peeling in actual applications. The adhesive sheet comprises a substrate including a heteroatom-containing polymer component at least at a portion of a surface a silicone adhesive layer that is in contact with the heteroatom-containing polymer component, wherein the heteroatom-containing polymer having, at a side chain, an N,N-substituted amino group or a heterocyclic group.Type: ApplicationFiled: January 2, 2019Publication date: November 26, 2020Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventor: YOSHITERU KAKINUMA
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Patent number: 10294333Abstract: Siloxane-based gel compositions are prepared from room temperature condensation curable mixtures that include 0.5-45% by weight silicone resin with at least two hydroxyl groups, 99.5-55% by weight of at least one silanol-terminated siloxane fluid, and a co-curable compound with an amino group. The siloxane-based gel compositions can be used as adhesives or sealants in medical articles.Type: GrantFiled: December 4, 2013Date of Patent: May 21, 2019Assignee: 3M Innovative Properties CompanyInventors: Junkang J. Liu, Hironobu Ishiwatari, Siegfried K. Welke, Yoshiteru Kakinuma
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Publication number: 20180179419Abstract: A laminated film (10) includes a substrate layer (14) having a first surface (14a) and a second surface (14b) on opposite sides thereof, an adhesive layer (16) layered upon the first surface (14a), and a backing layer (12) that is releasably layered upon the second surface (14b) and supports the substrate layer (14) to be in a spread-out state. Fine projections (20) are provided on a surface (12a) of the backing layer (12) on a side opposite the substrate layer (14). The laminated film (10) can be wound with the adhesive layer (16) facing inward and tips of the fine projections (20) contacting the adhesive layer (16) to form a film roll.Type: ApplicationFiled: June 8, 2016Publication date: June 28, 2018Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventor: YOSHITERU KAKINUMA
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Publication number: 20180171183Abstract: An article 10 is provided with an adhesive layer 14 that includes an adhesive, a release layer 12 that is stacked on the adhesive layer 14, and an air layer 16 that is interposed between the adhesive layer 14 and the release layer 12. On a surface 12a of the release layer 12 that opposes the adhesive layer 14, microprotrusions 20 that contact the adhesive layer 14 with tips 20a are provided. The microprotrusions 20 are provided with a wall-shaped portion 22 having a shape that at least partially surrounds the air layer 16 between the adhesive layer 14 and the release layer 12. The wall-shaped portion 22 protects a main portion 14a of the adhesive layer 14 that is adjacent to the air layer 16 from contamination. By selecting a shape, dimensions, and the like of the micro protrusions 20, a release force of the release layer 12 can be adjusted to a desired range.Type: ApplicationFiled: June 3, 2016Publication date: June 21, 2018Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: AIZOH SAKURAI, YOSHITERU KAKINUMA, BING LIU
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Patent number: 9333723Abstract: An adhesive composition is disclosed that comprises acrylic adhesive particles having an average diameter of 10 to 100 micrometers obtained by suspension polymerization of an acrylic monomer mixture which comprises a branched C 14-22 alkyl group containing (meth)acrylate and a polar monomer. The adhesive composition may be applied to an adhesive dressing or patch. The adhesive has excellent water vapor permeability, excellent adhesion to skin with low skin irritation when applied, less adhesive residue after peeling, and less keratin damage. The adhesive does not cause wetness or peeling from sweat while being worn.Type: GrantFiled: March 4, 2011Date of Patent: May 10, 2016Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Hiroko Akiyama, Yorinobu Takamatsu, Yoshiteru Kakinuma
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Publication number: 20150376345Abstract: Siloxane-based gel compositions are prepared from room temperature condensation curable mixtures that include 0.5-45% by weight silicone resin with at least two hydroxyl groups, 99.5-55% by weight of at least one silanol-terminated siloxane fluid, and a co-curable compound with an amino group. The siloxane-based gel compositions can be used as adhesives or sealants in medical articles.Type: ApplicationFiled: December 4, 2013Publication date: December 31, 2015Inventors: Junkang J. Liu, Hironobu Ishiwatari, Siegfried K. Welke, Yoshiteru Kakinuma
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Publication number: 20130260137Abstract: An adhesive composition is disclosed that comprises acrylic adhesive particles having an average diameter of 10 to 100 micrometers obtained by suspension polymerization of an acrylic monomer mixture which comprises a branched C 14-22 alkyl group containing (meth)acrylate and a polar monomer. The adhesive composition may be applied to an adhesive dressing or patch. The adhesive has excellent water vapor permeability, excellent adhesion to skin with low skin irritation when applied, less adhesive residue after peeling, and less keratin damage. The adhesive does not cause wetness or peeling from sweat while being worn.Type: ApplicationFiled: March 4, 2011Publication date: October 3, 2013Inventors: Hiroko Akiyama, Yorinobu Takamatsu, Yoshiteru Kakinuma