Patents by Inventor Shu Hotta
Shu Hotta 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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Publication number: 20130037843Abstract: A light emitting transistor of the present invention has a light emitting layer, both a source electrode and a drain electrode both of which are connected with the light emitting layer electrically, an insulation layer arranged on the light emitting layer, a gate electrode arranged on the insulation layer. The light emitting layer is made from an organic semiconductor material. The light emitting transistor has also a periodic structure and the gate electrode to which an AC voltage is applied. And the emission intensity can be high, and width of the emission spectrum can be reduced. In addition, it is easy to control the amplitude of the emitting light and the width of emission spectrum reproducibly.Type: ApplicationFiled: February 9, 2011Publication date: February 14, 2013Inventors: Takeshi Yamao, Shu Hotta, Yoichi Sakurai, Yoshitaka Makino, Kohei Terasaki, Akinori Okada
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Publication number: 20020114973Abstract: Provided is a new molecular compound excellent in luminous property, which has a molecular structure wherein a thiophene ring and a benzene (or naphthalene) ring are directly bonded to each other, as a molecular compound making it possible to control its luminous color relatively easily and realize highly efficient and bright luminescence. In this compound, its color tone of emitted light can be variously changed by altering the number of the thiophenering and the benzene (or naphthalene)-ring and the bonding order of the rings. Thus, if this molecular compound is used as a luminous material, it is possible to easily cope with both control of its luminous color and realization of highly efficient and bright luminescence. Use of a luminous material using this molecular compound makes it possible to realize luminescence having wide colors from violet to red highly efficiently.Type: ApplicationFiled: December 3, 2001Publication date: August 22, 2002Applicant: Japan Chemical Innovation InstituteInventors: Shu Hotta, Takashi Tamaki
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Patent number: 6355365Abstract: Provided is a new molecular compound excellent in luminous property, which has a molecular structure wherein a thiophene ring and a benzene (or naphthalene) ring are directly bonded to each other, as a molecular compound making it possible to control its luminous color relatively easily and realize highly efficient and bright luminescence. In this compound, its color tone of emitted light can be variously changed by altering the number of the thiophene ring and the benzene (or naphthalene) ring and the bonding order of the rings. Thus, if this molecular compound is used as a luminous material, it is possible to easily cope with both control of its luminous color and realization of highly efficient and bright luminescence. Use of a luminous material using this molecular compound makes it possible to realize luminescence having wide colors from violet to red highly efficiently.Type: GrantFiled: May 10, 1999Date of Patent: March 12, 2002Assignees: Japan Chemical Innovation Institute, Agency of Industrial Science & TechnologyInventors: Shu Hotta, Takashi Tamaki
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Patent number: 5912473Abstract: A method of manufacturing an organic electronic device having a substrate and a pair of electrodes facing each other, including the steps of forming a polytetrafluoroethylene oriented film on a substrate, and contacting an oligothiophene compound with the polytetrafluoroethylene oriented film to form an organic oriented film on the polytetrafluoroethylene oriented film between the pair of electrodes wherein the long axis of oligothiophene molecules is oriented to the orientation of the polytetrafluoroethylene oriented film and crystallized.Type: GrantFiled: August 13, 1996Date of Patent: June 15, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuya Wakita, Shu Hotta, Nobuo Sonoda, Yang Yang
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Patent number: 5556706Abstract: A conductive layered product is made by adhering an oligothiophene compound to the surface of a polytetrafluoroethylene (PTFE), wherein the surface of said PTFE is oriented by an orientation treatment, and wherein the molecular chains of said oligothiophene compound are oriented and crystallized in the orientation direction of the PTFE, thus improving the orientation of the oligothiophene compound of a low molecular conductive material by a simple method. The oligothophene compound adhered to the PTFE oriented film is oriented and crystallized. A gaseous-phase method and a casting method are acceptable methods for adhering the compound. It is preferable to use oligothiophene compounds with 4-6 polymerization degrees. The oligothiophene compound, in which the .alpha. position at the end of molecular chains is replaced with an alkyl group, can also be used.Type: GrantFiled: October 6, 1993Date of Patent: September 17, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuya Wakita, Shu Hotta, Nobuo Sonoda, Yang Yang
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Patent number: 5546889Abstract: A method of manufacturing an organic electronic device having a substrate and a pair of electrodes facing each other, including the steps of forming a polytetrafluoroethylene oriented film on a substrate, and contacting an oligothiophene compound with the polytetrafluoroethylene oriented film to form an organic oriented film on the polytetrafluoroethylene oriented film between the pair of electrodes wherein the long axis of oligothiophene molecules is oriented to the orientation of the polytetrafluoroethylene oriented film and crystallized.Type: GrantFiled: September 30, 1994Date of Patent: August 20, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuya Wakita, Shu Hotta, Nobuo Sonoda, Yang Yang
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Patent number: 5216102Abstract: The present invention provides a process for producing a polyacetylene.In the present process for producing a polyacetylene, acetylene is polymerized with a Ziegler-Natta catalyst consisting of a trialkylaluminum and an alkyl titanate, wherein there is used, as the trialkylaluminum, a trialkylaluminum having an alkyl group of 6 or more carbon atoms, or, as the alkyl titanate, an alkyl titanate having an alkyl group of 6 or more carbon atoms.The polyacetylene obtained according to the present invention is superior in mechanical properties, particularly stretchability.Type: GrantFiled: September 30, 1991Date of Patent: June 1, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mamoru Soga, Shu Hotta, Nobuo Sonoda, Hideki Shirakawa, Kazuo Akagi
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Patent number: 5109109Abstract: A process for producing aromatic polymers which comprise subjecting halogenated aromatic compounds or combinations of aromatic compounds and polyhalogenated aromatic compounds to dehydrohalogenation reaction in the presence of a metal halide for condensation. The halogenated aromatic compounds, aromatic compounds and polyhalogenated aromatic compounds include not only those compounds having benzene nucleus or nuclei, but also compounds of aromatic character such as heterocyclic five-membered compounds. A high degree of polymerization is attained according to the process.Type: GrantFiled: December 12, 1990Date of Patent: April 28, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Mamoru Soga, Nobuo Sonoda
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Patent number: 5009815Abstract: A composition of nonlinear optical materials is disclosed which comprises two or more organic compounds, at least one of which is a first organic compound with a .pi.-electron conjugated system containing an electron-donative substituent group and an electron-attractive substituent group.Type: GrantFiled: February 9, 1990Date of Patent: April 23, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuya Wakita, Nobuo Sonoda, Tokihiko Shimizu, Shu Hotta, Mamoru Soga
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Patent number: 4983696Abstract: A polyacetylene with excellent stretchability can be obtained by a process which comprises polymerizing acetylene with a Ziegler-Natta catalyst consisting of a tetraalkyl titanate and a trialkylaluminum, wherein in the Ziegler-Natta catalyst at least one of the tetraalkyl titanate and the trialkylaluminum has a long chain alkyl group and the molar ratio of al to Ti is 1.5-10.Type: GrantFiled: January 16, 1990Date of Patent: January 8, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mamoru Soga, Shu Hotta, Nobuo Sonoda
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Patent number: 4735879Abstract: The present invention provides a recording medium employing conductive polymers and a recording method employing the recording medium. The recording medium of the present invention is comprised of a substrate and a conductive polymer layer including a dopant therein and layered on the substrate. In addition, the recording method according to the present invention is effected on the basis of selective change in the amount of the dopant contained in the conductive polymers. The recording medium according to the present invention is utilizable ion the field of recording, memory and electronic devices, while displaying remarkably advantageous recording characteristics and environmental stability.Type: GrantFiled: April 23, 1985Date of Patent: April 5, 1988Assignee: Matsushita Electrical Industrial Co., Ltd.Inventors: Shu Hotta, Mamoru Soga, Wataru Shimotsuma
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Patent number: 4615938Abstract: Dye-receiving sheets for thermal recording which comprise a support and a dye-developing or receiving layer formed on the support. The layer is made of a composition comprising a dispersion of inorganic fine particles uniformly dispersed throughout a binder of a mixture comprising a first resin having good dye receptivity or good affinity for dyes and a second resin immiscible with the first resin. The binder mixture of two different types of resins allows microscopic interstices to exist at or along boundaries of the resins, through which interstices dye molecules penetrate and chemically combine with and/or adsorb on active sites of the inorganic particles and the first resin.Type: GrantFiled: December 5, 1984Date of Patent: October 7, 1986Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Tokihiko Shimizu, Nobuyoshi Taguchi
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Patent number: 4582587Abstract: Polymeric materials consisting essentially of a polymer of recurring units of a five-membered oxygen family heterocyclic ring which is selected from furan, thiophene, selenophene, tellurophene and derivatives thereof. The polymer is doped with anions of the specific type. A method for producing the polymeric materials is also described which comprises electrochemically polymerizing a five-membered oxygen family heterocyclic compound in coexistence with an acceptor with or without use of a supporting electrolyte in such a way that anions of the specific type is taken in the polymerized heterocyclic compound. The polymeric material is obtained in the form of a dense tenacious film.Type: GrantFiled: November 28, 1984Date of Patent: April 15, 1986Assignee: Matsushita Electric Industrial Co.Inventors: Shu Hotta, Tomiharu Hosaka, Nobuo Sonoda, Wataru Shimotsuma
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Patent number: 4541830Abstract: A dye transfer sheet for heat-sensitive recording is described which comprises a substrate, and a thin layer of at least one sublimable dye formed on one side of the substrate. The dye layer comprises non-sublimable particles uniformly distributed throughout the layer to form irregularities on the layer surface.Type: GrantFiled: November 10, 1983Date of Patent: September 17, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Tokihiko Shimizu, Nobuyoshi Taguchi
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Patent number: 4510089Abstract: 1,2,3,4,5,6,7,8-Octahydro-11,11,12,12-tetracyano-9,10-anthraquinodimethane compounds of the general formula ##STR1## in which W, X, Y and Z independently represent hydrogen, halogen, hydroxyl group, hydrocarbon group having 1 to 8 carbon atoms, alkoxy group or acyloxy group provided that W=Y and X=Z, or W=Z and X=Y. The compositions and charge transfer complexes comprising these compounds are also described together with intermediates for the compounds.Type: GrantFiled: June 8, 1982Date of Patent: April 9, 1985Assignee: Matsushita Electric Industrial Company, LimitedInventors: Shu Hotta, Tomiharu Hosaka, Wataru Shimotsuma
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Patent number: 4501686Abstract: Polymeric materials consisting essentially of a polymer of recurring units of a five-membered oxygen family heterocyclic ring which are selected from furan, thiophene, selenophene, tellurophene and derivatives thereof. The polymer is doped with anions of the specific type. A method for producing the polymeric materials is also described which comprises electrochemically polymerizing a five-membered oxygen family heterocyclic compound in coexistence with an acceptor with or without use of a supporting electrolyte in such a way that anions of the specific type are taken in the polymerized heterocyclic compound. The polymeric material is obtained in the form of a dense tenacious film.Type: GrantFiled: April 25, 1983Date of Patent: February 26, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Tomiharu Hosaka, Nobuo Sonoda, Wataru Shimotsuma
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Patent number: 4500459Abstract: A 11,11,12,12,-tetracyano-9,10-antraquinondimethane compound of the general formula ##STR1## wherein Z.sub.2, Z.sub.3, Z.sub.6 and Z.sub.7 each is H, halogen, alkyl, phenyl, alkylphenyl, hydroxyalkyl, carboxyalkyl, hydroxy, amino or carboxy and Z.sub.1, Z.sub.4, Z.sub.5 and Z.sub.8 each is H, Cl, hydroxy or amino; said halogen being F, Cl, Br or I and said alkyl, alkylphenyl, hydroxyalkyl and carboxyalkyl each containing up to 8 carbon atoms.The compounds within the scope of the above general formula are of value as organic conductors or organic semiconductors and can be used broadly as electronic materials.Type: GrantFiled: March 12, 1982Date of Patent: February 19, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Tomiharu Hosaka, Wataru Shimotsuma
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Patent number: 4478753Abstract: A process for producing 11,11,12,12-tetracyano-9,10-anthraquinodimethane or its derivatives of the general formula ##STR1## in which Z.sub.1, Z.sub.4, Z.sub.5, and Z.sub.8 independently represent hydrogen, chlorine, hydroxy or amino group and Z.sub.2, Z.sub.3, Z.sub.6 and Z.sub.7 independently represent hydrogen, halogen, alkyl which has 1 to 8 carbon atoms, phenyl, alkylphenyl whose alkyl group has 1 to 2 carbon atoms, hyroxyalkly which has 1 to 8 carbon atoms, carboxyalkyl whose alkyl group has 1 to 8 carbon atoms, hydroxy amino, or carboxyl group, the process comprising introduction of dicyanomethyl groups into an anthracene compound of the following general formula at 9 and 10 positions ##STR2## in which Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, Z.sub.5, Z.sub.6, Z.sub.7 and Z.sub.8 have the same meanings as defined above, and dehydrogenation of the dicyanomethyl groups.Type: GrantFiled: September 28, 1982Date of Patent: October 23, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Tomiharu Hosaka, Nobuo Sonoda, Wataru Shimotsuma
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Patent number: 4439569Abstract: This invention is directed to a polymeric thermo-sensitive material which comprises a polyamide composition containing compounds of sulphur-contained compounds or phosphorous acid ester, and which is smaller in polarization in the application of direct-current electric field, higher in temperature detection function, does not cause flexibility deterioration due to heating operation and is less in hygroscopicity. A composition containing thiophosphorous acid ester and bis(hydroxyphenyl) sulfide derivative from a group of the phosphorous acid ester is particularly superior in quality.Type: GrantFiled: September 22, 1982Date of Patent: March 27, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Yoshio Kishimoto, Wataru Shimotsuma
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Patent number: 4426546Abstract: A functional electric device is described, which device comprises a functional material layer, and a pair of electrodes separated from each other and electrically contacting with the functional material layer. At least one of the pair of electrodes is made of copper or an alloy of copper and a copper inactivating agent is present between the functional material layer and the at least one of the paired electrodes. The functional electric device includes heat-sensitive, fusing and photovoltaic elements.Type: GrantFiled: December 11, 1981Date of Patent: January 17, 1984Assignee: Matsushita Electric Industrial Company, LimitedInventors: Shu Hotta, Tomiharu Hosaka, Wataru Shimotsuma, Yoshio Kishimoto