Patents by Inventor Kazushi Shiren
Kazushi Shiren 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: 11800785Abstract: A polycyclic aromatic compound represented by general formula (1) described below and having a bulky substituent in a molecule is used as a material for an organic device, whereby, for example, an organic EL device excellent in quantum efficiency can be provided. In particular, concentration quenching can be suppressed even if a use concentration is comparatively high, and therefore the present art is advantageous in a device production process. In formula (1) described above, R1, R3, R4 to R7, R8 to R11 and R12 to R15 are independently hydrogen, aryl or the like, X1 is —O— or >N—R (R is aryl or the like), Z1 and Z2 are a bulky substituent such as aryl, and at least one hydrogen in the compound represented by formula (1) may be replaced by halogen or deuterium.Type: GrantFiled: November 16, 2018Date of Patent: October 24, 2023Assignees: KWANSEI GAKUIN EDUCATIONAL FOUNDATION, SK MATERIALS JNC CO., LTD.Inventors: Takuji Hatakeyama, Kazushi Shiren, Yuko Yamaga, Guofang Wang, Yasuyuki Sasada
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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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Publication number: 20230096132Abstract: According to the present invention, options for materials for organic devices such as materials for organic EL elements are increased by addition of a cycloalkane, by condensation, to a polycyclic aromatic compound in which a plurality of aromatic rings are linked together by boron atoms, oxygen atoms, and the like. By using a novel cycloalkane-condensed polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent emission efficiency and element life is provided.Type: ApplicationFiled: April 14, 2020Publication date: March 30, 2023Applicants: Kwansei Gakuin Educational Foundation, SK Materials JNC Co., Ltd.Inventors: Takuji HATAKEYAMA, Kazushi SHIREN, Akiko KAGEYAMA, Hiroyuki TANAKA, Akihide MIZUTANI, Yasuyuki SASADA
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Publication number: 20220376179Abstract: An object of the present invention is to provide an organic electroluminescent element having optimal light emitting characteristics. The above problem is solved by an organic electroluminescent element having a light emitting layer containing a compound of formula (1) or a multimer compound having a plurality of structures of formula (1) and a compound of formula (2). (In formula (1), ring A, ring B, and ring C each represent an aryl ring or the like, X1 and X2 each independently represent O or N—R, and the R represents an aryl or the like. In formula (2), R1 to R10 each represent an aryl or the like.Type: ApplicationFiled: November 17, 2017Publication date: November 24, 2022Inventors: Takuji HATAKEYAMA, Yukihiro FUJITA, Kazushi SHIREN, Takao KIKUCHI, Guofang WANG
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Publication number: 20220006012Abstract: A polycyclic aromatic compound represented by general formula (1) described below and having a bulky substituent in a molecule is used as a material for an organic device, whereby, for example, an organic EL device excellent in quantum efficiency can be provided. In particular, concentration quenching can be suppressed even if a use concentration is comparatively high, and therefore the present art is advantageous in a device production process. In formula (1) described above, R1, R3, R4 to R7, R8 to R11 and R12 to R15 are independently hydrogen, aryl or the like, X1 is —O— or >N—R (R is aryl or the like), Z1 and Z2 are a bulky substituent such as aryl, and at least one hydrogen in the compound represented by formula (1) may be replaced by halogen or deuterium.Type: ApplicationFiled: November 16, 2018Publication date: January 6, 2022Applicants: KWANSEI GAKUIN EDUCATIONAL FOUNDATION, JNC CORPORATIONInventors: Takuji HATAKEYAMA, Kazushi SHIREN, Yuko YAMAGA, Guofang WANG, Yasuyuki SASADA
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Patent number: 11139438Abstract: By manufacturing an organic EL element using a material for a light emitting layer including a pyrene-based compound represented by the following formula (2) as a host material and a polycyclic aromatic compound in which a plurality of aromatic rings is linked with a boron atom and a nitrogen atom or an oxygen atom as a dopant material, an organic EL element having, for example, excellent light emission efficiency is provided. In the above formula (2), at least one hydrogen atom in a pyrene moiety may be substituted by an aryl having 6 to 10 carbon atoms or the like. Ar represents an aryl having 14 to 40 carbon atoms or a heteroaryl having 12 to 40 carbon atoms. These groups may be substituted by an aryl having 6 to 10 carbon atoms or the like. s and p each independently represent an integer of 1 or 2. s and p do not simultaneously represent 2. One or more hydrogen atoms in a compound represented by formula (2) may be each independently substituted by a halogen atom, cyano, or a deuterium atom.Type: GrantFiled: January 10, 2019Date of Patent: October 5, 2021Assignees: Kwansei Gakuin Educational Foundation, SK Materials JNC Co., Ltd.Inventors: Takuji Hatakeyama, Yuko Yamaga, Daisuke Baba, Kazushi Shiren
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Patent number: 10811613Abstract: An object is to provide a novel polycyclic aromatic compound and an organic electroluminescent element using the same. By providing a novel polycyclic aromatic compound having a diarylamino group and having a plurality of aromatic rings linked to each other via a boron atom, an oxygen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.Type: GrantFiled: January 13, 2017Date of Patent: October 20, 2020Assignees: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji Hatakeyama, Guofang Wang, Yohei Ono, Yuko Yamaga, Kazushi Shiren
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Publication number: 20200144513Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.Type: ApplicationFiled: June 11, 2019Publication date: May 7, 2020Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
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Publication number: 20200144515Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.Type: ApplicationFiled: June 11, 2019Publication date: May 7, 2020Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
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Publication number: 20200144514Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.Type: ApplicationFiled: June 11, 2019Publication date: May 7, 2020Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
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Publication number: 20190372023Abstract: An object of the present invention is to provide an organic electroluminescent element having optimal light emitting characteristics. The above problem is solved by an organic electroluminescent element having a light emitting layer containing a compound of formula (1) or a multimer compound having a plurality of structures of formula (1) and a compound of formula (2). (In formula (1), ring A, ring B, and ring C each represent an aryl ring or the like, X1 and X2 each independently represent O or N—R, and the R represents an aryl or the like. In formula (2), R1 to R16 each represent an aryl or the like.Type: ApplicationFiled: December 25, 2017Publication date: December 5, 2019Applicants: Kwansei Gakuin Education Foundation, JNC CorporationInventors: Takuji HATAKEYAMA, Yukihiro FUJITA, Kazushi SHIREN
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Patent number: 10374166Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.Type: GrantFiled: October 7, 2014Date of Patent: August 6, 2019Assignees: KWANSEI GAKUIN EDUCATIONAL FOUNDATION, JNC CORPORATIONInventors: Takuji Hatakeyama, Soichiro Nakatsuka, Kiichi Nakajima, Hiroki Hirai, Yohei Ono, Kazushi Shiren, Jingping Ni, Takeshi Matsushita, Toshiaki Ikuta
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Publication number: 20190229277Abstract: By manufacturing an organic EL element using a material for a light emitting layer including a pyrene-based compound represented by the following formula (2) as a host material and a polycyclic aromatic compound in which a plurality of aromatic rings is linked with a boron atom and a nitrogen atom or an oxygen atom as a dopant material, an organic EL element having, for example, excellent light emission efficiency is provided. In the above formula (2), at least one hydrogen atom in a pyrene moiety may be substituted by an aryl having 6 to 10 carbon atoms or the like. Ar represents an aryl having 14 to 40 carbon atoms or a heteroaryl having 12 to 40 carbon atoms. These groups may be substituted by an aryl having 6 to 10 carbon atoms or the like. s and p each independently represent an integer of 1 or 2. s and p do not simultaneously represent 2. One or more hydrogen atoms in a compound represented by formula (2) may be each independently substituted by a halogen atom, cyano, or a deuterium atom.Type: ApplicationFiled: January 10, 2019Publication date: July 25, 2019Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji Hatakeyama, Yuko Yamaga, Daisuke Baba, Kazushi Shiren
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Publication number: 20190214575Abstract: Provided is an organic electroluminescent element which has improved driving voltage and improved current efficiency. An organic electroluminescent element having the above-mentioned improved characteristics is provided by using, as a material for organic electroluminescent elements, a polycyclic aromatic compound in which a nitrogen atom and another heteroatom or a metal atom (X) are adjacent to each other in a non-aromatic ring.Type: ApplicationFiled: March 14, 2019Publication date: July 11, 2019Applicants: JNC Corporation, Kyoto UniversityInventors: Yohei ONO, Kazushi SHIREN, Toshiaki IKUTA, Jingping NI, Takeshi MATSUSHITA, Takuji HATAKEYAMA, Masaharu NAKAMURA, Shiguma HASHIMOTO
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Publication number: 20190181350Abstract: By introducing deuterium at a natural abundance ratio or higher into a novel polycyclic aromatic compound in which a plurality of aromatic rings is linked via a boron atom, an oxygen atom, or the like, options of a material for an organic device such as a material for an organic EL element are increased. Furthermore, by using a novel deuterium-substituted polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent luminous efficiency and element lifetime is provided.Type: ApplicationFiled: December 7, 2018Publication date: June 13, 2019Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji Hatakeyama, Takayuki HIROTA, Kazushi SHIREN, Yasuyuki SASADA
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Publication number: 20190058124Abstract: Provided is a delayed fluorescence organic EL element having optimal light emission characteristics, by a polycyclic aromatic compound represented by the following general formula (1) or a polycyclic aromatic compound multimer having a plurality of structures represented by the following general formula (1). ring A, ring B and ring C each independently represent an aryl ring or a heteroaryl ring, while at least one hydrogen atom in these rings may be substituted, Y1 represents B, X1 and X2 each independently represent N—R, R of the N—R is an optionally substituted aryl, an optionally substituted heteroaryl or alkyl, R of the N—R may be bonded to the ring A, ring B, and/or ring C with a linking group or a single bond, and at least one hydrogen atom in a compound or a structure represented by formula (1) may be substituted by a halogen atom or a deuterium atom.Type: ApplicationFiled: February 7, 2017Publication date: February 21, 2019Applicants: Kwansei Gakuin Educational Fondation, JNC CorporationInventors: Takuji HATAKEYAMA, Shintaro NOMURA, Toshiaki IKUTA, Kazushi SHIREN, Yohei ONO
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Publication number: 20190027694Abstract: An object is to provide a novel polycyclic aromatic compound and an organic electroluminescent element using the same. By providing a novel polycyclic aromatic compound having a diarylamino group and having a plurality of aromatic rings linked to each other via a boron atom, an oxygen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.Type: ApplicationFiled: January 13, 2017Publication date: January 24, 2019Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji Hatakeyama, Guofang WANG, Yohei ONO, Yuko YAMAGA, Kazushi SHIREN
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Publication number: 20180047913Abstract: Provided is an organic electroluminescent element which has improved driving voltage and improved current efficiency. An organic electroluminescent element having the above-mentioned improved characteristics is provided by using, as a material for organic electroluminescent elements, a polycyclic aromatic compound in which a nitrogen atom and another heteroatom or a metal atom (X) are adjacent to each other in a non-aromatic ring.Type: ApplicationFiled: October 12, 2017Publication date: February 15, 2018Applicants: JNC Corporation, Kyoto UniversityInventors: Yohei ONO, Kazushi SHIREN, Toshiaki IKUTA, Jingping NI, Takeshi MATSUSHITA, Takuji HATAKEYAMA, Masaharu NAKAMURA, Shiguma HASHIMOTO
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Publication number: 20150236274Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.Type: ApplicationFiled: October 7, 2014Publication date: August 20, 2015Applicants: Kwansei Gakuin Educational Foundation, JNC CorporationInventors: Takuji Hatakeyama, Soichiro Nakatsuka, Kiichi Nakajima, Hiroki Hirai, Yohei Ono, Kazushi Shiren, Jingping Ni, Takeshi Matsushita, Toshiaki Ikuta
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Publication number: 20150097162Abstract: Provided is an organic electroluminescent element which has improved driving voltage and improved current efficiency. An organic electroluminescent element having the above-mentioned improved characteristics is provided by using, as a material for organic electroluminescent elements, a polycyclic aromatic compound in which a nitrogen atom and another heteroatom or a metal atom (X) are adjacent to each other in a non-aromatic ring.Type: ApplicationFiled: September 11, 2013Publication date: April 9, 2015Applicants: JNC Corporation, Kyoto UniversityInventors: Yohei Ono, Kazushi Shiren, Toshiaki Ikuta, Jingping Ni, Takeshi Matsushita, Takuji Hatakeyama, Masaharu Nakamura, Shiguma Hashimoto