Patents by Inventor Eiji Okabe
Eiji Okabe 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: 12252643Abstract: A liquid crystal composition as a material used for elements for controlling electromagnetic wave signals in a frequency range of 1 GHz to 10 THz, and an element containing this composition are provided. In the liquid crystal composition, a characteristic balance is excellent, and at least one of characteristics of a wide temperature range of a nematic phase, a large refractive index anisotropy in a frequency region used for control, and a small dielectric loss tangent (tan ?) is satisfied. A liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) is provided: wherein R1 is an alkyl having 1 to 12 carbon atoms; ring A1 is 1,4-phenylene; L11, L13, L14, L16, Y11, and Y12 are each hydrogen; L12 is fluorine; and L15 is methyl.Type: GrantFiled: November 20, 2023Date of Patent: March 18, 2025Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji Okabe, Takanori Mori, Kazushi Shiren, Yuko Katano
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Patent number: 12247153Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a and c are respectively 0 or 1, b is 1, and a sum of a, b, and c is 2.Type: GrantFiled: April 10, 2024Date of Patent: March 11, 2025Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji Okabe, Takanori Mori, Kazushi Shiren, Yuko Katano
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Patent number: 12203024Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a, b, and c are respectively 0, 1, and 0.Type: GrantFiled: February 10, 2023Date of Patent: January 21, 2025Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji Okabe, Takanori Mori, Kazushi Shiren, Yuko Katano
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Publication number: 20240294830Abstract: A liquid crystal composition as a material used for elements for controlling electromagnetic wave signals in a frequency range of 1 GHz to 10 THz, and an element containing this composition are provided. In the liquid crystal composition, a characteristic balance is excellent, and at least one of characteristics of a wide temperature range of a nematic phase, a large refractive index anisotropy in a frequency region used for control, and a small dielectric loss tangent (tan ?) is satisfied. A liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) is provided. For example, R1 is an alkyl having 1 to 12 carbon atoms; ring A1 is 1,4-phenylene; L11, L13, L14, L16, Y11, and Y12 are each hydrogen; L12 is fluorine; and L15 is methyl.Type: ApplicationFiled: November 20, 2023Publication date: September 5, 2024Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji OKABE, Takanori MORI, Kazushi SHIREN, Yuko KATANO
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Publication number: 20240271041Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a and c are respectively 0 or 1, b is 1, and a sum of a, b, and c is 2.Type: ApplicationFiled: April 10, 2024Publication date: August 15, 2024Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji OKABE, Takanori MORI, Kazushi SHIREN, Yuko KATANO
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Patent number: 12060514Abstract: A material used in an element for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz. A liquid crystal composition containing at least one compound selected from a group of compounds represented by Formula (1), at least one compound selected from a group of compounds represented by Formula (2) and at least one compound selected from a group of compounds represented by Formula (3). In Formulae (1) to (3), R1, R21, R22, R31, and R32 may be alkyls having 1 to 12 carbon atoms; a ring A1 may be 1,4-phenylene; Z11, Z13, Z21, Z23, Z31, and Z33 may be single bonds; Z12, Z22, and Z32 may be —C?C— or —C?C—C?C—; L13 to L16, L21 to L23, and L31 to L36 may be hydrogen or fluorine; Y11 and Y12 may be hydrogen or fluorine; and n1 may be 0.Type: GrantFiled: July 13, 2021Date of Patent: August 13, 2024Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji Okabe, Takanori Mori, Yuko Katano
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Publication number: 20230265343Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a, b, and c are respectively 0, 1, and 0.Type: ApplicationFiled: February 10, 2023Publication date: August 24, 2023Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji OKABE, Takanori MORI, Kazushi SHIREN, Yuko KATANO
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Patent number: 11492551Abstract: As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan ? in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.Type: GrantFiled: September 8, 2021Date of Patent: November 8, 2022Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Takanori Mori, Yoichi Uriu, Eiji Okabe, Hitoshi Tobata
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Publication number: 20220119710Abstract: A material used in an element for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz. A liquid crystal composition containing at least one compound selected from a group of compounds represented by Formula (1), at least one compound selected from a group of compounds represented by Formula (2) and at least one compound selected from a group of compounds represented by Formula (3). For example, R1, R21, R22, R31, and R32 are alkyls having 1 to 12 carbon atoms; a ring A1 is 1,4-phenylene; Z11, Z13, Z21, Z23, Z31, and Z33 are single bonds; Z12, Z22, and Z32 are —C?C— or —C?C—C?C—; L13 to L16, L21 to L23, and L31 to L36 are hydrogen or fluorine; Y11 and Y12 are hydrogen or fluorine; and n1 is 0.Type: ApplicationFiled: July 13, 2021Publication date: April 21, 2022Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji OKABE, Takanori MORI, Yuko KATANO
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Publication number: 20220081618Abstract: As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan ? in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.Type: ApplicationFiled: September 8, 2021Publication date: March 17, 2022Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Takanori MORI, Yoichi URIU, Eiji OKABE, Hitoshi TOBATA
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Patent number: 11155753Abstract: There is provided a liquid crystal composition which has favorable characteristics and excellent characteristic balance as a material for an element used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz.Type: GrantFiled: October 21, 2019Date of Patent: October 26, 2021Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norio Tamura, Yoichi Uriu, Eiji Okabe, Koki Sago
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Publication number: 20200299581Abstract: A device using a liquid crystal medium exhibiting an optically isotropic liquid crystal phase, particularly, a blue phase liquid crystal medium for polarized light control application, in which reduction of an effective dielectric constant in a high frequency region is suppressed. A liquid crystal composition contains achiral component T, and has a liquid crystal phase optically exhibiting isotropy, in which achiral component T contains at least one compound selected from the group of compounds represented by formula (1) as a first component, at least one compound selected from the group of compounds represented by formula (2) and formula (3) as a second component, and is used for optical switching for controlling retardation by electric field-induced birefringence.Type: ApplicationFiled: March 19, 2020Publication date: September 24, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eiji OKABE, HITOSHI TOBATA
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Publication number: 20200263090Abstract: The disclosure provides a liquid crystal composition having favorable characteristics and excellent characteristic balance as a material used for an element used for phase control of an electromagnetic wave signal having a frequency of 1 MHz to 400 THz. A liquid crystal composition which is used for phase control of an electromagnetic wave signal having a frequency of 1 MHz to 400 THz, and which includes a compound selected from the group represented by Formula (1), in Formula (1), the ring A0 to the ring A4 are each independently 1,4-phenylene and the like; Z0 to Z3 are each independently a single bond or —CF2O—, where —CF2O— is one or less in Z0 to Z3; p is 0 or 1; and R1 is alkyl having 1 to 12 carbon atoms and the like, and R11 is —CN and the like.Type: ApplicationFiled: February 13, 2020Publication date: August 20, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoichi URYU, Norio TAMURA, Eiji OKABE, Koki SAGO, HITOSHI TOBATA
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Publication number: 20200224099Abstract: There is provided a liquid crystal composition which has favorable characteristics and excellent characteristic balance as a material for an element used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz.Type: ApplicationFiled: October 21, 2019Publication date: July 16, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norio TAMURA, Yoichi Uriu, Eiji OKABE, KOKI SAGO
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Publication number: 20200190404Abstract: As a material to be used in a device used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz, a liquid crystal composition having a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, large optical anisotropy, small dielectric loss, and thermal stability in a frequency range used for phase control and having good balance between characteristics is required. A liquid crystal composition used for phase control of an electromagnetic wave signal with any frequency of 1 MHz to 400 THz containing at least one compound selected from a group consisting of compounds represented by formula (1) and at least one compound selected from a group consisting of compounds represented by formula (2).Type: ApplicationFiled: October 2, 2019Publication date: June 18, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventor: Eiji OKABE
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Patent number: 10633589Abstract: Provided are a liquid-crystal-medium having stability to heat, light and so forth, a wide liquid-crystal-phase temperature-range and significantly large dielectric-anisotropy and developing an optically isotropic liquid-crystal-phase; and various optical-devices used in a wide temperature-range, having short response-time, a large contrast-ratio and low drive-voltage and suppressing decrease in an effective dielectric-constant in a high-frequency range.Type: GrantFiled: October 25, 2017Date of Patent: April 28, 2020Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Hitoshi Tobata, Eiji Okabe
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Publication number: 20190375988Abstract: Since a switching element using a nematic liquid crystal medium has a long response time, there is a limit to the number of control instances over a certain time. By using a liquid crystal composition exhibiting an optical isotropic phase, an element capable of performing polarization control at high speed is provided. A mixture comprising the liquid crystal composition and polymerizable monomers, a polymer/liquid crystal composite material obtained by polymerizing the mixture, an element comprising the liquid crystal composition or the polymer/liquid crystal composite, and a LIDAR comprising the element are provided.Type: ApplicationFiled: June 11, 2019Publication date: December 12, 2019Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Shinichi YAMAMOTO, Eiji OKABE
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Publication number: 20190316036Abstract: A liquid crystal composition that contains achiral component T including at least one compound selected from the group of compounds represented by formula (1) and at least one compound selected from the group of compounds represented by formula (2), and a chiral agent to develop an optically isotropic liquid crystal phase. In formulas (1) and (2), R1 and R2 are independently alkoxyalkyl; Z11, Z12, Z21 and Z22 are independently a single bond; L11 to L13, L21 and L22 are independently fluorine; and Y1 and Y2 are independently fluorine, for example.Type: ApplicationFiled: June 22, 2017Publication date: October 17, 2019Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Hitoshi TOBATA, Eiji OKABE
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Patent number: 10441936Abstract: Shown is a method for producing a liquid crystal capsule having a particle diameter of 30 to 150 nanometers, and a method for producing a liquid crystal capsule without using a homogenizer. The disclosure concerns a method for producing a liquid crystal capsule, including a step of preparing an emulsion by performing phase inversion emulsification of a mixed material obtained by mixing a liquid crystal composition, a monomer, a surfactant, and a polymerization initiator; and a step of producing a liquid crystal capsule by applying a coacervation method to the emulsion. The disclosure also concerns a liquid crystal capsule having a liquid crystal composition, a surfactant and a capsule wall, wherein the capsule wall has a closed curved shape, the liquid crystal composition and a hydrophobic moiety of the surfactant are arranged inside the capsule wall, and a hydrophilic moiety of the surfactant is arranged outside the capsule wall.Type: GrantFiled: July 10, 2015Date of Patent: October 15, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITYInventors: Tatsuo Taniguchi, Sho Hidaka, Eiji Okabe, Fumitaka Kondo
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Patent number: 10385272Abstract: Provided is a liquid crystal composition satisfying at least one or having suitable balance regarding at least two of characteristics such as high maximum or low minimum temperature of a nematic phase, large optical anisotropy, large positive dielectric anisotropy and high stability to ultraviolet light, and a liquid crystal display device including such a composition, particularly an encapsulated liquid crystal display device, and a liquid crystal display device serving as a constituent of 3D lenses.Type: GrantFiled: July 10, 2015Date of Patent: August 20, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventor: Eiji Okabe