Patents by Inventor Kazuhisa Morimoto
Kazuhisa Morimoto 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: 4845021Abstract: An optical recording medium which comprises a substrate and a recording layer of at least two J-aggregates of dyes formed on the substrate is described. The dyes may be photochromic dyes or other types of dyes capable of forming the aggregates which have narrower absorption spectral ranges than original dyes. A plurality of information bits can be written in the recording layer by irradiation of one laser beam spot. The recording layer is formed by an LB film method or a method capable of fluidizing a dye solution in a direction horizontal to the substrate surface. A recording method using the medium is also described.Type: GrantFiled: January 14, 1988Date of Patent: July 4, 1989Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Jinsei Miyazaki, Eiji Ando, Kimiaki Yoshino, Kazuhisa Morimoto
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Patent number: 4794068Abstract: An optical recording medium is prepared by the use of spiropyrane whose molecular structure contains an alkyl chain having at least 10 more carbon atoms, and by the use of an LB film method or a spin coating method. This recording medium is of a structure wherein when irradiated with the UV, the spiropyrane is photo-isomerized to photomerocyane and, thereafter, when subsequently heated at 35.degree. to 40.degree. C. for 15 minutes, a J-aggregate of the photomerocyane is formed in very stabilized form. When the recording medium is irradiated with light of wavelength of visible spectrum, the color is bleached with the information consequently recorded. The optical recording medium herein disclosed is rewritable and can retain the recorded information for 5,000 hours or more.Type: GrantFiled: August 31, 1987Date of Patent: December 27, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Jinsei Miyazaki, Eiji Ando, Kimiaki Yoshino, Kazuhisa Morimoto
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Patent number: 4737427Abstract: A optical recording medium which comprises a substrate and a recording layer of at least two J-aggregates of dyes formed on the substrate is described. The dyes may be photochromic dyes or other types of dyes capable of forming the aggregates which have narrower absorption spectral ranges than original dyes. A plurality of information bits can be written in the recording layer by irradiation of one laser beam spot. The recording layer is formed by an LB film method or a method capable of fluidizing a dye solution in a direction horizontal to the substrate surface. A recording method using the medium is also described.Type: GrantFiled: March 5, 1986Date of Patent: April 12, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Jinsei Miyazaki, Eiji Ando, Kimiaki Yoshino, Kazuhisa Morimoto
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Patent number: 4725460Abstract: This invention provides an optical filter comprises of a pair of solid polymer films, wherein (1) a first solid polymer film has a planar alignment of a cholesteric liquid crystal structure of either clockwise or counterclockwise helical structure, which alignment allows the light of a specified wavelength to be scattered selectively, and (2) a second solid polymer film has a planar alignment of a cholesteric liquid crystal structure of a helical structure whose helical direction is the opposite to that of the first solid polymer film, which alignment allows the light at the specified wavelength to be scattered selectively, wherein the optical axes of the first and second solid polymer films are made substantially parallel to each other.This invention also provides preparation methods of an optical filter mentioned above.Type: GrantFiled: March 12, 1985Date of Patent: February 16, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihiro Matsuo, Shoichi Ishihara, Kazuhisa Morimoto, Seiichi Nagata, Tetsu Ogawa
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Patent number: 4686169Abstract: An optical recording medium comprising a substrate and an information recording layer which consists of monolayer assemblies comprising a photochromic compound of which is based on cis-trans isomerization such as an amphipathic derivative of azobenzene, indigo or thioindigo having a long chain substituent, which monolayers are formed on the substrate by the Langmuir-Blodgett method and oriented in a two-dimensional plain. When the recording medium is irradiated by light, light absorption spectrum of the recording layer changes so that information is recorded. Since the photochromic compound is oriented in a monolayer, its photochromism lasts long.Type: GrantFiled: November 8, 1985Date of Patent: August 11, 1987Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kimiaki Yoshino, Eiji Ando, Jinsei Miyazaki, Kazuhisa Morimoto
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Patent number: 4472336Abstract: A method of manufacturing capacitance video discs comprising thermoplastic resins and conductive carbon black, wherein said conductive carbon black having an average primary particle size of 25 millimicrons or less is washed by water or an inorganic acid, heated at temperatures of 400.degree. to 1,200.degree. C. in a non-oxidizing atmosphere and wherein the coarse particles having a grain size of 0.05 mm or more are substantially eliminated. This method can provide video discs having reduced surface defects and stability after a moisture-proof test.Type: GrantFiled: April 16, 1982Date of Patent: September 18, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshio Enoki, Kazuhisa Morimoto
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Patent number: 4232869Abstract: A pickup cartridge for phonographic records, in which the damper material supporting an end portion of a cantilever is made of an elastomer comprising a blend polymer of a silicone rubber polymer and polyisobutylene. This damper material is advantageous for its high dampability and small temperature dependence of the dampability.Type: GrantFiled: August 31, 1978Date of Patent: November 11, 1980Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takashi Wakabayashi, Kazuhisa Morimoto
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Patent number: 4120813Abstract: There is provided a hygroscopic resin comprising a vinyl polymer having an epoxy group, said vinyl polymer being a copolymerization product between a vinyl monomer having a hydrophilic property and a further vinyl monomer having an epoxy group. This hygroscopic resin is not soluble in water or organic solvent and is thus useful for various applications, e.g., a humidity sensor can be made by dispersing a conductive powder in the hygroscopic resin. This humidity sensor has high sensitivity to humidity and can operate stably for a long time.Type: GrantFiled: May 16, 1977Date of Patent: October 17, 1978Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideo Hatanaka, Yoshinobu Murakami, Kazuhisa Morimoto
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Patent number: 4016094Abstract: An electro-optical device using a liquid crystal consisting of 99.9 to 30 wt.% of at least one nematic liquid crystal and 0.1 to 70 wt. % of at least one optically active liquid crystal compound, (+)-p-alkoxy-p'-(2-methylbutyl)azoxybenzene. Such a device has a better display performance than similar devices because the mixture has a threshold voltage and a rapid response to an electric signal applied to the device, and so it is very practical for a matrix display device.Type: GrantFiled: March 17, 1975Date of Patent: April 5, 1977Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahide Tsukamoto, Tetsuro Ohtsuka, Kazuhisa Morimoto, Yoshinobu Murakami
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Patent number: 3977769Abstract: The present invention provides an improved electro-optical device having a cell for containing a liquid crystal and consisting of two light-transparent plates opposed to each other and having electrically conductive electrodes on the inner surfaces thereof, the electrodes on at least one inner surface being transparent and spacer means between said opposed electrodes; and a power supply coupled to said electrodes for applying an electric voltage to said electrodes, whereas the improvement comprises a liquid crystal in said cell between said electrodes consisting of 99.95 to 65 wt.% of at least one nematic liquid crystal and 0.05 to 35 wt.Type: GrantFiled: April 22, 1975Date of Patent: August 31, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahide Tsukamoto, Tetsuro Ohtsuka, Kazuhisa Morimoto, Yoshinobu Murakami
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Patent number: 3973830Abstract: The present invention provides an improved electrooptical device having a cell for containing a liquid crystal and consisting of two light-transparent plates opposed to each other and having electrically conductive electrodes on the inner surfaces thereof, the electrodes on at least one inner surface being transparent, and spacer means between said opposed electrodes; and a power supply coupled to said electrodes for applying an electric voltage to said electrodes, whereas the improvement comprises a liquid crystal in said cell between said electrodes consisting of 99.95 to 65 wt.% of at least one nematic liquid crystal and 0.05 to 35 wt.Type: GrantFiled: April 23, 1975Date of Patent: August 10, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahide Tsukamoto, Tetsuro Ohtsuka, Kazuhisa Morimoto, Yoshinobu Murakami
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Patent number: 3966469Abstract: A photosensitive composition for electrophotography comprising a combination of poly-N-vinylcarbazole or halogenated poly-N-vinylcarbazole and prepolymer of diallylphthalate.This composition has an improved photodecay characteristics due to the use of the prepolymer of diallylphthalate, gives a high electrostatic contrast of a latent image and is useful for a contact exposure reproduction process.Type: GrantFiled: September 10, 1974Date of Patent: June 29, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Makoto Kuroda, Kazuhisa Morimoto, Akira Minobe
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Patent number: RE28698Abstract: An electrophotographic material is provided herein which comprises a conductive support layer and a photoconductive insulating layer, the latter layer comprising a photoconductive polymeric compound such as poly-N-vinylcarbazole, and a sensitizer having the following general formula ##SPC1##WhereinB represents a radical selected from the group consisting of ##SPC2## ##SPC3##Compounds falling under the latter general formula include such compounds as 2-phenyl-4-[(2'-phenyl-4'-benzopyranylidene) benzyl]-benzopyrylium perchlorate and 2,3-phenyl-4-[(2'-phenyl 4'-benzopyranylidene)benzyl]-6-methylbenzopyrylium perchlorate.Type: GrantFiled: August 7, 1974Date of Patent: January 27, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshinobu Murakami, Yo Hasegawa, Kazuhisa Morimoto