Patents by Inventor Jun-Ichi Sakamoto
Jun-Ichi Sakamoto 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: 20230272548Abstract: An alloy member includes a base material that includes a surface layer and is a magnesium-lithium alloy (Mg—Li alloy) having an ?-phase and a ?-phase, and an anticorrosive film is able to be formed on the surface layer. A degree of orientation in a (110) plane of the ?-phase of the Mg—Li alloy is more than or equal to 70%. An average grain size of the Mg—Li alloy is less than or equal to 50 ?m. A Li concentration of the surface layer is lower than a Li concentration of inside of the base material.Type: ApplicationFiled: February 22, 2023Publication date: August 31, 2023Inventors: HIROTOMO TAMIYA, JUN-ICHI SAKAMOTO, KEIICHI ISHIZUKA
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Publication number: 20220010412Abstract: Provided is an alloy member including a substrate made of magnesium-lithium alloy with a sum of content of magnesium and content of lithium of 90 mass % or more and a coating film disposed on the substrate. The coating film contains fluorine and oxygen, with a fluorine content of more than 50 atom % and an oxygen content of less than 5 atom %.Type: ApplicationFiled: September 23, 2021Publication date: January 13, 2022Inventor: Jun-ichi Sakamoto
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Patent number: 11180832Abstract: Provided is an alloy member including a substrate made of magnesium-lithium alloy with a sum of content of magnesium and content of lithium of 90 mass % or more and a coating film disposed on the substrate. The coating film contains fluorine and oxygen, with a fluorine content of more than 50 atom % and an oxygen content of less than 5 atom %.Type: GrantFiled: December 10, 2019Date of Patent: November 23, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Jun-ichi Sakamoto
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Publication number: 20200190636Abstract: Provided is an alloy member including a substrate made of magnesium-lithium alloy with a sum of content of magnesium and content of lithium of 90 mass % or more and a coating film disposed on the substrate. The coating film contains fluorine and oxygen, with a fluorine content of more than 50 atom % and an oxygen content of less than 5 atom %.Type: ApplicationFiled: December 10, 2019Publication date: June 18, 2020Inventor: Jun-ichi Sakamoto
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Patent number: 9862656Abstract: Provided are a method for producing paraffins and an apparatus for producing paraffins, in which each high-purity paraffin can be produced with high efficiency while complicated operations such as distillation are not carried out. An apparatus for producing paraffins includes a separation and recovery unit and a hydrogenation unit. The separation and recovery unit has a separator containing silver ions, and separates impurities from raw material olefins containing olefins as main components and recovers the olefins, by bringing the raw material olefins into contact with the separator. The hydrogenation unit brings the olefins recovered by the separation and recovery unit into contact with hydrogen in a presence of a catalyst and subjects the recovered olefins to a hydrogenation reaction, thereby obtaining high-purity paraffins.Type: GrantFiled: September 25, 2012Date of Patent: January 9, 2018Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Akihiro Kuwana, Jun-ichi Sakamoto, Hiroyuki Hata
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Patent number: 8941920Abstract: Provided are an optical element and a method of producing an optical element in which sufficient adhesion with an upper layer can be secured without damaging spectral characteristics. The production method includes the step of forming a first structural body in which a space part and a structural part are alternately and repeatedly arranged, the step of forming an etching stopper layer on an upper part of the structural part, and the step of forming a second structural body on the etching stopper layer by etching.Type: GrantFiled: July 7, 2009Date of Patent: January 27, 2015Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Arai, Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai
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Publication number: 20140378721Abstract: Provided are a method for producing paraffins and an apparatus for producing paraffins, in which each high-purity paraffin can be produced with high efficiency while complicated operations such as distillation are not carried out. An apparatus for producing paraffins includes a separation and recovery unit and a hydrogenation unit. The separation and recovery unit has a separator containing silver ions, and separates impurities from raw material olefins containing olefins as main components and recovers the olefins, by bringing the raw material olefins into contact with the separator. The hydrogenation unit brings the olefins recovered by the separation and recovery unit into contact with hydrogen in a presence of a catalyst and subjects the recovered olefins to a hydrogenation reaction, thereby obtaining high-purity paraffins.Type: ApplicationFiled: September 25, 2012Publication date: December 25, 2014Inventors: Akihiro Kuwana, Jun-ichi Sakamoto, Hiroyuki Hata
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Patent number: 8715516Abstract: An optical element having a three-dimensional structure which can function in a visible range and can improve adherence at a structural interface of the element, and a method of manufacturing the optical element. The optical element includes a substrate, and at least a first layer and a second layer on the substrate are manufactured such that each of the first layer and the second layer has a repetition structure of spaces and structural parts at a pitch equal to or less than a wavelength of visible light, and at an interface between the first layer and the second layer, overlapped structures are provided in which the repetition structure of the first layer and the repetition structure of the second layer overlap in a stack direction of the layers.Type: GrantFiled: January 26, 2011Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
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Publication number: 20130241090Abstract: Provided is a method of manufacturing an optical element having a structure, which is represented by a one-dimensional lattice, with high yield with the use of a sol-gel material. A titanium based sol-gel material is applied onto a substrate (1), and then is subjected to vacuum drying to form a titania sol layer (2) corresponding to a dried sol-gel film. Onto the titania sol layer (2), a line-and-space structure is transferred by embossing using a mold (3), and then the mold (3) is separated. Thus, a titania sol layer (4) having the structure is formed. Next, heating is performed to accelerate the dehydration condensation reaction of the sol-gel material to cure the sol-gel material, and thus a titanium oxide structure portion (5) having the line-and-space structure is formed.Type: ApplicationFiled: December 8, 2011Publication date: September 19, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Jun-ichi Sakamoto, Junji Terada, Masaya Hisamatsu
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Publication number: 20120176676Abstract: A line-and-space structure having a line portion and a space portion is formed by applying a sol-gel coating on a substrate and transferring a structure of a mold to the coating, and an embedded metal portion is formed by filling the space portion with a molten metal. As the metal to be molten, a metal material having a melting point of not higher than 650° C. and showing, after the solidification, an average extinction coefficient of higher than 5.0 or an average extinction coefficient of higher than 4.5 and an average refractive index of less than 1, at a wavelength range of 400 to 700 nm, is selected to improve optical characteristics.Type: ApplicationFiled: December 28, 2011Publication date: July 12, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Jun-ichi Sakamoto
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Publication number: 20110123765Abstract: Provided are an optical element and a method of producing an optical element in which sufficient adhesion with an upper layer can be secured without damaging spectral characteristics. The production method includes the step of forming a first structural body in which a space part and a structural part are alternately and repeatedly arranged, the step of forming an etching stopper layer on an upper part of the structural part, and the step of forming a second structural body on the etching stopper layer by etching.Type: ApplicationFiled: July 7, 2009Publication date: May 26, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Kazuhiro Arai, Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai
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Publication number: 20110114598Abstract: An optical element having a three-dimensional structure which can function in a visible range and can improve adherence at a structural interface of the element, and a method of manufacturing the optical element. The optical element includes a substrate, and at least a first layer and a second layer on the substrate are manufactured such that each of the first layer and the second layer has a repetition structure of spaces and structural parts at a pitch equal to or less than a wavelength of visible light, and at an interface between the first layer and the second layer, overlapped structures are provided in which the repetition structure of the first layer and the repetition structure of the second layer overlap in a stack direction of the layers.Type: ApplicationFiled: January 26, 2011Publication date: May 19, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
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Patent number: 7929209Abstract: An optical element having a three-dimensional structure which can function in a visible range and can improve adherence at a structural interface of the element, and a method of manufacturing the optical element. The optical element includes a substrate, and at least a first layer and a second layer on the substrate are manufactured such that each of the first layer and the second layer has a repetition structure of spaces and structural parts at a pitch equal to or less than a wavelength of visible light, and at an interface between the first layer and the second layer, overlapped structures are provided in which the repetition structure of the first layer and the repetition structure of the second layer overlap in a stack direction of the layers.Type: GrantFiled: February 21, 2007Date of Patent: April 19, 2011Assignee: Canon Kabushiki KaishaInventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
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Publication number: 20070201135Abstract: The present invention provides an optical element having a three-dimensional structure which can function in a visible range and can improve adherence at a structural interface of the element, and a method of manufacturing the optical element. The optical element including a substrate and at least a first layer and a second layer on the substrate is manufactured such that each of the first layer and the second layer has a repetition structure of spaces and structural parts at a pitch equal to or less than a wavelength of visible light, and at an interface between the first layer and the second layer, overlapped structures are provided in which the repetition structure of the first layer and the repetition structure of the second layer overlap in a stack direction of the layers.Type: ApplicationFiled: February 21, 2007Publication date: August 30, 2007Applicant: Canon Kabushiki KaishaInventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
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Patent number: 5932731Abstract: The present invention provides a process for preparing an aromatic or heteroaromatic thiol represented by the formula (2), the process comprising hydrolyzing an aromatic or heteroaromatic halogenated methyl sulfide represented by the formula (1)Ar.paren open-st.SCH.sub.3-m X.sub.m).sub.n (1)Ar.paren open-st.SH).sub.n (2)wherein Ar is an aromatic or heteroaromatic ring which has no substituent or which has an optional substituent or substituents, X is a halogen atom, m is an integer of 1 to 3 and n is 1 or 2.Type: GrantFiled: December 22, 1997Date of Patent: August 3, 1999Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Hiroshi Goda, Mikio Yamamoto, Jun-ichi Sakamoto, Hitoshi Karino
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Patent number: 5811571Abstract: The present invention is directed to a process for preparing an aromatic or heteroaromatic sulfonyl halide represented by the formula (3), the process comprising halogenating an aromatic or heteroaromatic methyl sulfide represented by the formula (1) or an aromatic or heteroaromatic methyl sulfoxide represented by the formula (2) with a halogenating agent in the presence of waterAr.paren open-st.SCH.sub.3-m X.sub.m).sub.n (1)Ar.paren open-st.SOCH.sub.3-m X.sub.m).sub.n (2)Ar.paren open-st.SO.sub.2 Y).sub.n (3)wherein Ar is an aromatic ring or a heteroaromatic ring which is unsubstituted or which has an optional substituent or substituents, X and Y are halogen atoms, m is an integer of 0 to 3 and n is 1 or 2. According to the present invention, aromatic or heteroaromatic sulfonyl halides can be produced industrially cheaply and easily.Type: GrantFiled: December 13, 1996Date of Patent: September 22, 1998Inventors: Hitoshi Karino, Hiroshi Goda, Jun-ichi Sakamoto, Katsuhiko Yoshida, Hideaki Nishiguchi
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Patent number: 5741933Abstract: The present invention provides a process for preparing an aromatic or heteroaromatic thiol represented by the formula (2), the process comprising hydrolyzing an aromatic or heteroaromatic halogenated methyl sulfide represented by the formula (1)Ar.paren open-st.SCH.sub.3-m X.sub.m).sub.n (1)Ar.paren open-st.SH).sub.n (2)wherein Ar is an aromatic or heteroaromatic ring which has no substituent or which has an optional substituent or substituents, X is a halogen atom, m is an integer of 1 to 3 and n is 1 or 2.According to the present invention, an aromatic or heteroaromatic thiol can be prepared at a commercially low cost and with ease.Type: GrantFiled: July 24, 1996Date of Patent: April 21, 1998Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Hiroshi Goda, Mikio Yamamoto, Jun-ichi Sakamoto, Hitoshi Karino
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Patent number: 5035010Abstract: A shower device includes a housing having a longitudinally elongated slit substantially in center part of the housing, substantially all constituents of the device being accommodated within the housing, so that a guide rail is disposed along the slit and a slider carrying a shower nozzle is displaced by a drive means for reciprocation along the guide rail with the shower nozzle disposed at the slit. The device is thus made excellent in the appearance and also in the safety with all water hoses disposed inside the housing.Type: GrantFiled: August 14, 1989Date of Patent: July 30, 1991Assignee: Matsushita Electric Works, Ltd.Inventors: Jun-ichi Sakamoto, Tetsuya Onkura, Kouichi Yoshida
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Patent number: 3932901Abstract: A flush toilet bowl of water reservoir containing and pedal operating type which is compact, easy to assemble and convenient and economical in operation is provided. The toilet bowl comprises a bowl unit including a bowl and a water reservoir formed between the bowl and an outer case and a supporting unit separable from the bowl unit and having a dropping port normally closed by a slidable valve and communicated with discharging port in the lower part of the bowl. The supporting unit comprises a diaphragm pump communicated with the water reservoir in the bowl unit for pumping its water to inner wall of the bowl, means for sliding the valve to open the dropping port, means for operating the diaphragm pump and treading pedals for operating the respective means separately. A further pedal is provided for simultaneously operating the treading pedals.Type: GrantFiled: August 22, 1974Date of Patent: January 20, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kanji Inui, Jun-Ichi Sakamoto, Yukihiro Gokoh