Patents by Inventor Michio Shirai
Michio Shirai 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: 6917475Abstract: The invention provides an optical element that has a low refractive-index chromatic dispersion, a high degree of freedom in molding or forming as is the case with synthetic resins, and moldability or formability that lends itself to mass production. The optical element is obtained by molding or otherwise forming a composition containing a first material that is a fine particle having an Abbe number vd of 80 or greater indicative of a chromatic dispersion in a visible range and having a size of less than 400 nm, and a second material that is an organic/inorganic hybrid material comprising an organic polymer material having a carbon-carbon bond in a main chain and an inorganic component.Type: GrantFiled: June 17, 2003Date of Patent: July 12, 2005Assignee: Olympus CorporationInventors: Naohito Shiga, Kunihisa Obi, Atsushi Goto, Tetsuhide Takeyama, Michio Shirai
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Publication number: 20050007681Abstract: The invention provides an optical system comprising an optical element that is improved in terms of resistance to scratching, weather resistance, etc. and has an optical surface defined by an aspheric surface. The optical system comprises an optical element having an entrance surface and an exit surface. At least either one of the entrance surface and the exit surface is defined by an aspheric surface. The optical element comprises an organic/inorganic hybrid.Type: ApplicationFiled: May 21, 2004Publication date: January 13, 2005Applicant: Olympus CorporationInventors: Michio Shirai, Kunihisa Obi
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Publication number: 20040132948Abstract: The present invention is directed to provide an organic/inorganic composite optical material and an optical element in which organic component and inorganic component are in good dispersed state and which has excellent optical characteristics. The organic/inorganic composite optical material comprises an organic high-molecular substance and an inorganic polymer which is prepared by the polycondensation of a metal alkoxide compound, and is characterized in that the metal alkoxide compound includes a functional group capable of interacting with the organic high-molecular substance or a monomer/oligomer generating the organic high-molecular substance to form a chemical bond therebetween.Type: ApplicationFiled: December 18, 2003Publication date: July 8, 2004Applicant: Olympus CorporationInventor: Michio Shirai
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Publication number: 20030231403Abstract: The invention provides an optical element that has a low refractive-index chromatic dispersion, a high degree of freedom in molding or forming as is the case with synthetic resins, and moldability or formability that lends itself to mass production. The optical element is obtained by molding or otherwise forming a composition containing a first material that is a fine particle having an Abbe number vd of 80 or greater indicative of a chromatic dispersion in a visible range and having a size of less than 400 nm, and a second material that is an organic/inorganic hybrid material comprising an organic polymer material having a carbon-carbon bond in a main chain and an inorganic component.Type: ApplicationFiled: June 17, 2003Publication date: December 18, 2003Applicant: Olympus Optical Co., Ltd.Inventors: Naohito Shiga, Kunihisa Obi, Atsushi Goto, Tetsuhide Takeyama, Michio Shirai
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Patent number: 5962686Abstract: N-Benzylazolium derivatives of the general formula (I), ##STR1## wherein Q is the remainder of an azole compound of the formula II ##STR2## possessing antifungal activity; Z is nitrogen or methine;R.sup.1 and R.sup.2 are each independently a hydrogen atom or a group --OY ?in which Y is a group easily hydrolyzable under physiological condition!;R.sup.3 and R.sup.4 are each independently a hydrogen or halogen atom, lower alkyl, lower alkoxy, lower alkylthio, (lower alkylcarbonyl)thiomethyl, carboxy or methoxycarbonyl; andX.sup.- is a pharmaceutically acceptable anion,as well as salts, hydrates or solvates of the compounds of the general formula (I) have antiftngal properties.Type: GrantFiled: January 8, 1999Date of Patent: October 5, 1999Assignee: Hoffmann-La Roche Inc.Inventors: Shigeyasu Ichihara, Chikako Murasaki, Noriko Ohga, Jun Ohwada, Daisuke Sawada, Nobuo Shimma, Michio Shirai, Isao Umeda
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Patent number: 5900486Abstract: N-Benzylazolium derivatives of the general formula (I), ##STR1## wherein Q is the remainder of an azole compound of the formula II ##STR2## possessing antifungal activity; Z is nitrogen or methine;R.sup.1 and R.sup.2 are each independently a hydrogen atom or a group --OY ?in which Y is a group easily hydrolyzable under physiological condition!;R.sup.3 and R.sup.4 are each independently a hydrogen or halogen atom, lower alkyl, lower alkoxy, lower alkylthio, (lower alkylcarbonyl)thiomethyl, carboxy or methoxycarbonyl; andX.sup.- is a pharmaceutically acceptable anion,as well as salts, hydrates or solvates of the compounds of the general formula (I) have antifungal properties.Type: GrantFiled: September 9, 1997Date of Patent: May 4, 1999Assignee: Hoffmann-La Roche Inc.Inventors: Shigeyasu Ichihara, Chikako Murasaki, Noriko Ohga, Jun Ohwada, Daisuke Sawada, Nobuo Shimma, Michio Shirai, Isao Umeda
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Patent number: 5773403Abstract: A cleaning and drying solvent is disclosed which has excellent cleaning power and drying property and finds uses as a hand-cleaning agent, a precise cleaning agent and a drying agent for industrial parts. Since it does not contain halogens causing the depletion of the ozone layer, it is available as a solvent replacing freon. The cleaning and drying solvent is composed of a siloxane compound, in particular, hexamethyldisiloxane, an azeotropic or azeotrope-like composition of hexamethyldisiloxane and a lower alcohol, or a mixture of hexamethyldisiloxane and each of ketones, carboxylic esters, low molecular saturated hydrocarbons and low molecular alcohols.Type: GrantFiled: July 20, 1995Date of Patent: June 30, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Masamichi Hijino, Michio Shirai, Kunihiko Uzawa
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Patent number: 5562945Abstract: A method for post-cleaning finish drying is provided, by which finish drying of industrial parts can be conducted without leaving residues or corroding the cleaned material. In this method, finish drying can be performed without the use of freon being a cause of destruction of the ozonosphere. Preferably, a cleaned material is dipped (rinsed) in a low molecular weight siloxane having a content of organic compounds, such as dodecamethylpentasiloxane, of less than 0.01% by weight, taken out and dried. Also, preferably, the material rinsed with the low molecular weight siloxane is subjected to a vapor cleaning using a perfluorocarbon compound.Type: GrantFiled: April 29, 1994Date of Patent: October 8, 1996Assignee: Olympus Optical Co., Ltd.Inventors: Masamichi Hijino, Michio Shirai, Kazuhisa Karaki
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Patent number: 4778253Abstract: A device for retaining an optical part is disclosed, which comprises an optical element, a holding frame and an adhesive for fixing the optical element to the holding frame. The adhesive comprises an ultraviolet curing type adhesive containing 0.5-20% by weight of a filler.Type: GrantFiled: March 26, 1986Date of Patent: October 18, 1988Assignee: Olympus Optical Company LimitedInventors: Naohito Siga, Naoyuki Seo, Takae Harutake, Michio Shirai
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Patent number: 4725126Abstract: A device for retaining a lens by a lens holding frame is disclosed, which comprises a plurality of non-adhesion portions formed on an outer periphery of the lens an inner periphery of the frame, and an adhesive inserted into portions other than the non-adhesion portions between the lens and the frame.Type: GrantFiled: March 19, 1986Date of Patent: February 16, 1988Assignee: Olympus Optical Company LimitedInventors: Naohito Siga, Naoyuki Seo, Takae Harutake, Michio Shirai