Patents by Inventor Tomoaki Hara
Tomoaki Hara 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: 11965043Abstract: A resin particle includes a fluorescent colorant and a color pigment. A hue angle of the resin particle and a hue angle of the fluorescent colorant are different from each other. When a fluorescence peak wavelength in a spectral reflectance of the fluorescent colorant is represented by A (nm), an integrated value of a spectral reflectance (%) of the color pigment in a wavelength range of from A?30 (nm) to A+30 (nm) is 2,500 or more.Type: GrantFiled: July 6, 2020Date of Patent: April 23, 2024Assignee: FUJIFILM Business Innovation Corp.Inventors: Ryutaro Kembo, Masaru Takahashi, Yukiaki Nakamura, Tomoaki Tanaka, Satomi Hara
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Patent number: 10633590Abstract: The present application provides a liquid crystal composition with high dielectric constant anisotropy and a low viscosity, and to provide a liquid crystal display device with high contrast, high-speed responsivity, high light fastness, and high display quality without image sticking and display defects. The liquid crystal composition contains one or two or more compounds represented by the general formula (I). The liquid crystal composition is of great practical use as a liquid crystal composition for use in liquid crystal displays and is effective for high contrast, high-speed response, and high quality reliability.Type: GrantFiled: August 25, 2016Date of Patent: April 28, 2020Assignee: DIC CORPORATIONInventors: Junko Yamamoto, Tomoaki Hara, Go Sudo
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Patent number: 10093857Abstract: There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (?n) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently small viscosity (?), sufficiently small rotational viscosity (?1), a large elastic constant (K33), and negative dielectric anisotropy (??) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.Type: GrantFiled: March 27, 2014Date of Patent: October 9, 2018Assignee: DIC CORPORATIONInventors: Shinichi Hirata, Hyobok Cha, Naomi Hatano, Tomoaki Hara, Yasuo Umezu
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Publication number: 20180230383Abstract: The present application provides a liquid crystal composition with high dielectric constant anisotropy and a low viscosity, and to provide a liquid crystal display device with high contrast, high-speed responsivity, high light fastness, and high display quality without image sticking and display defects. The liquid crystal composition contains one or two or more compounds represented by the general formula (I). The liquid crystal composition is of great practical use as a liquid crystal composition for use in liquid crystal displays and is effective for high contrast, high-speed response, and high quality reliability.Type: ApplicationFiled: August 25, 2016Publication date: August 16, 2018Applicant: DIC CORPORATIONInventors: Junko Yamamoto, Tomoaki Hara, Go Sudo
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Publication number: 20180208846Abstract: There are provided a liquid crystal composition containing one or two or more compounds represented by the general formula (I) and a liquid crystal display device including the liquid crystal composition. A liquid crystal composition containing a compound represented by the general formula (I) has high dielectric constant anisotropy and low viscosity and is of great practical use as a liquid crystal composition for liquid crystal displays. A liquid crystal display device including a liquid crystal composition according to the present invention has a high contrast, high-speed responsivity, high light resistance, and a lower occurrence of image sticking and display defects, and is effective for higher-speed response and high-quality reliability.Type: ApplicationFiled: July 26, 2016Publication date: July 26, 2018Applicant: DIC CorporationInventors: Megumi Uzawa, Junko Yamamoto, Shirou Taniguchi, Tomoaki Hara, Go Sudo
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Patent number: 9777218Abstract: The present invention relates to a PSA-mode liquid crystal display device including a polymer produced by polymerizing a polymerizable compound by energy ray irradiation in a state in which a mixture of the polymerizable compound and a liquid crystal composition is held between the first substrate and the second substrate, the polymer having a number-average molecular weight of 50,000 or more in terms of polystyrene. In a PSA-mode display device in which alignment of liquid crystal molecules substantially vertically aligned between the substrates is controlled by applying a voltage, a pre-tilt angle can be properly given without being inhibited. Therefore, the present invention provides a PSA-mode display device with good alignment stability, uniform alignment within the substrates, and no or suppressed display defects and a method for producing the same.Type: GrantFiled: March 18, 2014Date of Patent: October 3, 2017Assignee: DIC CORPORATIONInventors: Tomoaki Hara, Wei Wu, Shotaro Kawakami
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Publication number: 20160319192Abstract: There is provided a liquid crystal composition whose refractive index anisotropy (?n) and nematic phase-isotropic liquid phase transition temperature (Tni) are sufficiently high, whose viscosity (?) is sufficiently low, whose rotational viscosity (?1) is sufficiently low, whose elastic constant (K33) is high, whose dielectric anisotropy (??) is high or whose ?? is negative with a large absolute value, and whose decrease in reliability after UV irradiation is small, and also provide a liquid crystal display element including the same, which has the excellent display quality and the high response speed.Type: ApplicationFiled: December 17, 2014Publication date: November 3, 2016Applicant: DIC CorporationInventors: Shinichi Hirata, Tomoaki Hara, Naomi Hatano, Yasuo Umezu
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Publication number: 20160237349Abstract: There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (?n) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently small viscosity (?), sufficiently small rotational viscosity (?1), a large elastic constant (K33), and negative dielectric anisotropy (??) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.Type: ApplicationFiled: March 27, 2014Publication date: August 18, 2016Applicant: DIC CorporationInventors: Shinichi Hirata, Hyobok Cha, Naomi Hatano, Tomoaki Hara, Yasuo Umezu
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Publication number: 20160060523Abstract: The present invention relates to a PSA-mode liquid crystal display device including a polymer produced by polymerizing a polymerizable compound by energy ray irradiation in a state in which a mixture of the polymerizable compound and a liquid crystal composition is held between the first substrate and the second substrate, the polymer having a number-average molecular weight of 50,000 or more in terms of polystyrene. In a PSA-mode display device in which alignment of liquid crystal molecules substantially vertically aligned between the substrates is controlled by applying a voltage, a pre-tilt angle can be properly given without being inhibited. Therefore, the present invention provides a PSA-mode display device with good alignment stability, uniform alignment within the substrates, and no or suppressed display defects and a method for producing the same.Type: ApplicationFiled: March 18, 2014Publication date: March 3, 2016Applicant: DIC CORPORATIONInventors: Tomoaki Hara, Wei Wu, Shotaro Kawakami
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Patent number: 9255274Abstract: An object of the present invention is to provide a translationally regulatable mRNA which has wider application and can perform specific ON-OFF regulation, an RNA-protein complex specifically bound to the mRNA, and a translational regulatory system. The present invention provides an mRNA having an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame, and an mRNA having a nucleotide sequence complementary to an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame.Type: GrantFiled: November 21, 2008Date of Patent: February 9, 2016Assignee: Japan Science and Technology AgencyInventors: Tan Inoue, Hirohide Saito, Tetsuhiro Kobayashi, Tomoaki Hara
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Publication number: 20110040077Abstract: An object of the present invention is to provide a translationally regulatable mRNA which has wider application and can perform specific ON-OFF regulation, an RNA-protein complex specifically bound to the mRNA, and a translational regulatory system. The present invention provides an mRNA having an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame, and an mRNA having a nucleotide sequence complementary to an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame.Type: ApplicationFiled: November 21, 2008Publication date: February 17, 2011Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Tan Inoue, Hirohide Saito, Tetsuhiro Kobayashi, Tomoaki Hara