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).

  • Patent number: 11180832
    Abstract: 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: Grant
    Filed: December 10, 2019
    Date of Patent: November 23, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun-ichi Sakamoto
  • Publication number: 20200190636
    Abstract: 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: Application
    Filed: December 10, 2019
    Publication date: June 18, 2020
    Inventor: Jun-ichi Sakamoto
  • Patent number: 9862656
    Abstract: 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: Grant
    Filed: September 25, 2012
    Date of Patent: January 9, 2018
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Akihiro Kuwana, Jun-ichi Sakamoto, Hiroyuki Hata
  • Patent number: 8941920
    Abstract: 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: Grant
    Filed: July 7, 2009
    Date of Patent: January 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Arai, Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai
  • Publication number: 20140378721
    Abstract: 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: Application
    Filed: September 25, 2012
    Publication date: December 25, 2014
    Inventors: Akihiro Kuwana, Jun-ichi Sakamoto, Hiroyuki Hata
  • Patent number: 8715516
    Abstract: 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: Grant
    Filed: January 26, 2011
    Date of Patent: May 6, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
  • Publication number: 20130241090
    Abstract: 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: Application
    Filed: December 8, 2011
    Publication date: September 19, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun-ichi Sakamoto, Junji Terada, Masaya Hisamatsu
  • Publication number: 20120176676
    Abstract: 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: Application
    Filed: December 28, 2011
    Publication date: July 12, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Jun-ichi Sakamoto
  • Publication number: 20110123765
    Abstract: 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: Application
    Filed: July 7, 2009
    Publication date: May 26, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiro Arai, Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai
  • Publication number: 20110114598
    Abstract: 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: Application
    Filed: January 26, 2011
    Publication date: May 19, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
  • Patent number: 7929209
    Abstract: 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: Grant
    Filed: February 21, 2007
    Date of Patent: April 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
  • Publication number: 20070201135
    Abstract: 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: Application
    Filed: February 21, 2007
    Publication date: August 30, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: Jun-ichi Sakamoto, Junji Terada, Noriyuki Nakai, Kazuhiro Arai
  • Patent number: 5932731
    Abstract: 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: Grant
    Filed: December 22, 1997
    Date of Patent: August 3, 1999
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Hiroshi Goda, Mikio Yamamoto, Jun-ichi Sakamoto, Hitoshi Karino
  • Patent number: 5811571
    Abstract: 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: Grant
    Filed: December 13, 1996
    Date of Patent: September 22, 1998
    Inventors: Hitoshi Karino, Hiroshi Goda, Jun-ichi Sakamoto, Katsuhiko Yoshida, Hideaki Nishiguchi
  • Patent number: 5741933
    Abstract: 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: Grant
    Filed: July 24, 1996
    Date of Patent: April 21, 1998
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Hiroshi Goda, Mikio Yamamoto, Jun-ichi Sakamoto, Hitoshi Karino
  • Patent number: 5035010
    Abstract: 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: Grant
    Filed: August 14, 1989
    Date of Patent: July 30, 1991
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Jun-ichi Sakamoto, Tetsuya Onkura, Kouichi Yoshida
  • Patent number: 3932901
    Abstract: 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: Grant
    Filed: August 22, 1974
    Date of Patent: January 20, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kanji Inui, Jun-Ichi Sakamoto, Yukihiro Gokoh