Patents by Inventor Hironari Sudeji
Hironari Sudeji 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: 12235482Abstract: An optical film formed of a resin C including a copolymer P containing a polymerization unit A and a polymerization unit B, wherein the optical film includes a phase separation structure that expresses structural birefringence, the phase separation structure includes a phase (A) containing as a main component the polymerization unit A and a phase (B) containing as a main component the polymerization unit B, and |n(A)?n(B)| is 0.12 or more.Type: GrantFiled: November 8, 2019Date of Patent: February 25, 2025Assignee: ZEON CORPORATIONInventors: Kazuki Kumazawa, Hironari Sudeji
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Patent number: 12139570Abstract: A phase difference film composed of a resin C containing a copolymer P including a polymerization unit A and a polymerization unit B, the phase difference film including a lamellar phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the formulae (1A): f(A)>0.5 and (2):D(A)>D(B), or the formulae (1B): f(B)>0.5 and (2). f(A) represents a total weight ratio of the polymerization unit A in the copolymer P, f(B) represents a total weight ratio of the polymerization unit B in the copolymer P, D(A)=ReA(450)/ReA(550), D(B)=ReB(450)/ReB(550), and ReA(450), ReA(550), ReB(450) and ReB(550) are as defined in the description.Type: GrantFiled: March 18, 2019Date of Patent: November 12, 2024Assignee: ZEON CORPORATIONInventors: Takeshi Asada, Hironari Sudeji, Kensaku Fujii, Yusuke Yasu, Hiroya Nishioka
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Publication number: 20240218113Abstract: Provided is a resin that can simultaneously achieve a high refractive index, high heat resistance, and low birefringence. A hydrogenated cycloolefin copolymer is obtained through hydrogenation of a cycloolefin copolymer that includes a structural unit derived from 1-naphthylnorbornene and a structural unit derived from 2-naphthylnorbornene, wherein an average endo isomer ratio of the 1-naphthylnorbornene and the 2-naphthylnorbornene is 50 mol % or more. The hydrogenated cycloolefin copolymer is suitable for use as a material of an optical element such as an optical lens.Type: ApplicationFiled: February 22, 2022Publication date: July 4, 2024Applicant: ZEON CORPORATIONInventors: Satoshi YAMADA, Hironari SUDEJI
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Patent number: 11970562Abstract: A phase difference film composed of a resin containing a copolymer including polymerization units A and B, the phase difference film including a cylindrical phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the following condition (1) or (2). Condition (1): D(A)>D(B) and f(B)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are parallel to each other. Condition (2): D(A)>D(B) and f(A)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are orthogonal to each other.Type: GrantFiled: March 18, 2019Date of Patent: April 30, 2024Assignee: ZEON CORPORATIONInventors: Takeshi Asada, Hironari Sudeji, Kensaku Fujii, Yusuke Yasu, Hiroya Nishioka
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Patent number: 11867873Abstract: A multilayer optical film including: an A layer formed of an alicyclic structure-containing polymer resin; and a B layer disposed on at least one surface of the A layer to be in direct contact therewith, the B layer serving as a masking layer, wherein the B layer is a cured product of a material Y including a dispersion of a crosslinkable polymer (a) and solid particles (b), and the B layer has a thickness tB of 10 ?m or more and 25 ?m or less. A production method including the steps of applying the material Y onto a surface of the A layer, to form a layer of the material Y; and curing the layer of the material Y.Type: GrantFiled: August 6, 2021Date of Patent: January 9, 2024Assignee: ZEON CORPORATIONInventor: Hironari Sudeji
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Publication number: 20230241829Abstract: A method for producing a phase difference film is provided. The phase difference film includes an orientation layer formed of a resin C having a negative intrinsic birefringence value. The resin C contains a block copolymer having a block (A) including as a main component a polymerization unit A having a negative intrinsic birefringence value and a block (B) including as a main component a polymerization unit B, and a weight fraction of the block (A) therein being 50% by weight or more and 90% by weight or less. The phase difference film has an NZ factor of greater than 0 and smaller than 1. The method comprising: forming a single layer film of the resin C; and causing phase separation of the resin C in the film, which includes a step of applying to the film a stress along a thickness direction thereof.Type: ApplicationFiled: February 21, 2023Publication date: August 3, 2023Applicant: ZEON CORPORATIONInventors: Takeshi ASADA, Hironari SUDEJI, Kensaku FUJII
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Patent number: 11654601Abstract: Provided is a resin sheet including a plurality of aspheric sections having low variation of thickness precision and high shape precision. A method of producing a resin sheet includes hot press forming a thermoplastic resin film formed using a thermoplastic resin so as to produce a resin sheet including a plurality of aspheric sections that are separated from one another. The hot press forming is performed by increasing the pressing pressure to a final pressing pressure with an average pressure increase rate of 0.1 MPa/s or less at a pressing temperature that is at least 40° C. higher than the glass-transition temperature of the thermoplastic resin.Type: GrantFiled: September 15, 2020Date of Patent: May 23, 2023Assignee: ZEON CORPORATIONInventors: Taichi Sawaguchi, Hironari Sudeji
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Publication number: 20230002544Abstract: Provided are a cycloolefin polymer simultaneously having a high refractive index, a low Abbe number, and low birefringence and also a method of producing this cycloolefin polymer and an optical element in which this cycloolefin polymer is used. The cycloolefin polymer is a polymer, or hydrogenated product thereof, said polymer comprising a structural unit derived from a naphthyl group-containing alicyclic compound (A) represented by following formula (1), in a specific proportion. In formula (1), one of R2a to R5a is a naphthyl group and remaining groups among R2a to R5a and R1a are as defined in the specification.Type: ApplicationFiled: November 26, 2020Publication date: January 5, 2023Applicant: ZEON CORPORATIONInventor: Hironari SUDEJI
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Publication number: 20220288820Abstract: Provided is a resin sheet including a plurality of aspheric sections having low variation of thickness precision and high shape precision. A method of producing a resin sheet includes hot press forming a thermoplastic resin film formed using a thermoplastic resin so as to produce a resin sheet including a plurality of aspheric sections that are separated from one another. The hot press forming is performed by increasing the pressing pressure to a final pressing pressure with an average pressure increase rate of 0.1 MPa/s or less at a pressing temperature that is at least 40° C. higher than the glass-transition temperature of the thermoplastic resin.Type: ApplicationFiled: September 15, 2020Publication date: September 15, 2022Applicant: ZEON CORPORATIONInventors: Taichi SAWAGUCHI, Hironari SUDEJI
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Publication number: 20220011490Abstract: An optical film formed of a resin C including a copolymer P containing a polymerization unit A and a polymerization unit B, wherein the optical film includes a phase separation structure that expresses structural birefringence, the phase separation structure includes a phase (A) containing as a main component the polymerization unit A and a phase (B) containing as a main component the polymerization unit B, and |n(A)?n(B)| is 0.12 or more.Type: ApplicationFiled: November 8, 2019Publication date: January 13, 2022Applicant: ZEON CORPORATIONInventors: Kazuki KUMAZAWA, Hironari SUDEJI
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Publication number: 20220011491Abstract: An optical film formed of a resin C including a copolymer P containing a polymerization unit A and a polymerization unit B, wherein the optical film includes a phase separation structure that expresses structural birefringence, the phase separation structure includes a phase containing as a main component the polymerization unit A and a phase containing as a main component the polymerization unit B, and a value of Rth/d calculated from the thickness-direction retardation Rth (nm) and thickness d (nm) is 2.5×10-3 or more.Type: ApplicationFiled: November 8, 2019Publication date: January 13, 2022Applicant: ZEON CORPORATIONInventors: Kazuki KUMAZAWA, Hironari SUDEJI
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Publication number: 20210364672Abstract: A multilayer optical film including: an A layer formed of an alicyclic structure-containing polymer resin; and a B layer disposed on at least one surface of the A layer to be in direct contact therewith, the B layer serving as a masking layer, wherein the B layer is a cured product of a material Y including a dispersion of a crosslinkable polymer (a) and solid particles (b), and the B layer has a thickness tB of 10 ?m or more and 25 ?m or less. A production method including the steps of applying the material Y onto a surface of the A layer, to form a layer of the material Y; and curing the layer of the material Y.Type: ApplicationFiled: August 6, 2021Publication date: November 25, 2021Applicant: ZEON CORPORATIONInventor: Hironari SUDEJI
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Patent number: 11130848Abstract: An optical layered film includes at least one A layer including a thermoplastic resin [A] and a B layer formed of a thermoplastic resin [B], wherein the at least one A layer is provided on at least one of surfaces of the B layer, a thickness-direction retardation Rthb of the B layer satisfies the following formula (1), and a tensile elongation at break Sa of a 1.5 mm-thick film (a1) formed of the thermoplastic resin [A] satisfies the following formula (2): (1) |Rthb|?40 nm, and (2) Sa?100%.Type: GrantFiled: September 19, 2018Date of Patent: September 28, 2021Assignee: ZEON CORPORATIONInventor: Hironari Sudeji
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Publication number: 20210032396Abstract: A phase difference film composed of a resin C containing a copolymer P including a polymerization unit A and a polymerization unit B, the phase difference film including a lamellar phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the formulae (1A): f(A)>0.5 and (2):D(A)>D(B), or the formulae (1B): f(B)>0.5 and (2). f(A) represents a total weight ratio of the polymerization unit A in the copolymer P, f(B) represents a total weight ratio of the polymerization unit B in the copolymer P, D(A)=ReA(450)/ReA(550), D(B)=ReB(450)/ReB(550), and ReA(450), ReA(550), ReB(450) and ReB(550) are as defined in the description.Type: ApplicationFiled: March 18, 2019Publication date: February 4, 2021Applicant: ZEON CORPORATIONInventors: Takeshi ASADA, Hironari SUDEJI, Kensaku FUJII, Yusuke YASU, Hiroya NISHIOKA
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Publication number: 20210009744Abstract: A phase difference film composed of a resin containing a copolymer including polymerization units A and B, the phase difference film including a cylindrical phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the following condition (1) or (2). Condition (1): D(A)>D(B) and f(B)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are parallel to each other. Condition (2): D(A)>D(B) and f(A)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are orthogonal to each other.Type: ApplicationFiled: March 18, 2019Publication date: January 14, 2021Applicant: ZEON CORPORATIONInventors: Takeshi ASADA, Hironari SUDEJI, Kensaku FUJII, Yusuke YASU, Hiroya NISHIOKA
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Publication number: 20200223995Abstract: An optical layered film includes at least one A layer including a thermoplastic resin [A] and a B layer formed of a thermoplastic resin [B], wherein the at least one A layer is provided on at least one of surfaces of the B layer, a thickness-direction retardation Rthb of the B layer satisfies the following formula (1), and a tensile elongation at break Sa of a 1.5 mm-thick film (a1) formed of the thermoplastic resin [A] satisfies the following formula (2): (1) |Rthb|?40 nm, and (2) Sa?100%.Type: ApplicationFiled: September 19, 2018Publication date: July 16, 2020Applicant: ZEON CORPORATIONInventor: Hironari SUDEJI
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Publication number: 20200209452Abstract: A phase difference film including an orientation layer formed of a resin C having a negative intrinsic birefringence value, wherein the resin C contains a block copolymer having a block (A) including as a main component a polymerization unit A having a negative intrinsic birefringence value and a block (B) including as a main component a polymerization unit B, and a weight fraction of the block (A) therein being 50% by weight or more and 90% by weight or less, and the phase difference film has an NZ factor of greater than 0 and smaller than 1; and the production method thereof. Preferably, in the orientation layer, the resin C exhibits a phase separation structure, and a distance between phases in the phase separation structure is 200 nm or less.Type: ApplicationFiled: May 18, 2018Publication date: July 2, 2020Applicant: ZEON CORPORATIONInventors: Takeshi ASADA, Hironari SUDEJI, Kensaku FUJII
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Publication number: 20190255821Abstract: A multilayer optical film including: an A layer formed of an alicyclic structure-containing polymer resin; and a B layer disposed on at least one surface of the A layer to be in direct contact therewith, the B layer serving as a masking layer, wherein the B layer is a cured product of a material Y including a dispersion of a crosslinkable polymer (a) and solid particles (b), and the B layer has a thickness tB of 10 ?m or more and 25 ?m or less; and a production method including the steps of applying the material Y onto a surface of the A layer, to form a layer of the material Y; and curing the layer of the material Y.Type: ApplicationFiled: March 23, 2017Publication date: August 22, 2019Applicant: ZEON CORPORATIONInventor: Hironari SUDEJI
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Patent number: 10338291Abstract: A multilayer film including: an A layer composed of a thermoplastic resin; and a B layer disposed on at least one of the surfaces of the A layer, the B layer being composed of a material Y that contains as a main component a polymer having a glass transition temperature of ?50 to 40° C., and a thickness Ta of the A layer, a thickness Tb of the B layer, a planar orientation coefficient P of the A layer, a loss modulus Ea? of the A layer, a loss modulus Eb? of the B layer, a storage modulus Ea? of the A layer, and a storage modulus Eb? of the B layer satisfying following formulae (1) to (4): 2.5×10?3<Tb/Ta<1.0×10?1??(1) P>1.0×10?3??(2) Eb?>Ea?+0.01 GPa??(3) Eb?<Ea??1 GPa.Type: GrantFiled: December 24, 2014Date of Patent: July 2, 2019Assignee: ZEON CORPORATIONInventor: Hironari Sudeji
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Patent number: 9658377Abstract: By provision of an A layer consisting of a resin having a positive intrinsic birefringence value; a B layer consisting of a resin containing a styrene polymer and having a negative intrinsic birefringence value; and a C layer consisting of a resin containing a polymer having an alicyclic structure, in this order; a phase difference film wherein, when the C layer is removed, retardation Re at an incident angle of 0° and retardation R40 at an incident angle of 40° satisfy a relationship of 0.92?R40/Re?1.08 is realized.Type: GrantFiled: December 20, 2011Date of Patent: May 23, 2017Assignee: ZEON CORPORATIONInventors: Hironari Sudeji, Taku Hatano