Patents by Inventor Hisamitsu Kamezaki
Hisamitsu Kamezaki 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: 9831521Abstract: To provide a nonaqueous electrolytic storage element, which contains: a positive electrode, which contains a positive electrode material layer including a positive electrode active material capable of reversibly accumulating and releasing anions; a negative electrode, which contains a negative electrode material layer including a negative electrode active material capable of reversibly accumulating and releasing cations; a separator provided between the positive electrode and the negative electrode; and a nonaqueous electrolyte containing an electrolyte salt, wherein a pore volume of the negative electrode material layer per unit area of the negative electrode is larger than a pore volume of the positive electrode material layer per unit area of the positive electrode.Type: GrantFiled: December 12, 2013Date of Patent: November 28, 2017Assignee: Ricoh Company, Ltd.Inventors: Okitoshi Kimura, Nobuaki Onagi, Eiko Hibino, Hisamitsu Kamezaki, Anna Hirowatari, Yasunori Sugimoto
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Patent number: 9754726Abstract: To provide a nonaqueous electrolytic capacitor element, which contains: a positive electrode containing a positive electrode active material capable of intercalating or deintercalating anions; a negative electrode containing a negative electrode active material; and a nonaqueous electrolyte, which contains a nonaqueous solvent, an electrolyte salt containing a halogen atom, and a compound having a site capable of bonding to an anion containing a halogen atom.Type: GrantFiled: November 11, 2013Date of Patent: September 5, 2017Assignees: Ricoh Company, Ltd., Kyushu UniversityInventors: Nobuaki Onagi, Okitoshi Kimura, Eiko Hibino, Hisamitsu Kamezaki, Tatsumi Ishihara
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Publication number: 20170047583Abstract: A non-aqueous electrolyte storage element, which contains a positive electrode; a negative electrode; and a non-aqueous electrolyte, wherein the positive electrode is an electrode, which contains: graphite-carbon composite particles composed of graphite particles and a carbon layer covering the graphite particles, and containing crystalline carbon; and activated carbon, and wherein the positive electrode is capable of accumulating and releasing anions.Type: ApplicationFiled: May 1, 2015Publication date: February 16, 2017Inventors: Hisamitsu KAMEZAKI, Nobuaki ONAGI, Masaki YOSHIO
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Publication number: 20170005361Abstract: A nonaqueous electrolyte secondary battery, which contains: an anode capable of accumulating or releasing metal lithium, or a lithium ion, or both; a cathode relative to the anode; and a nonaqueous electrolyte, in which a lithium salt is dissolved in a nonaqueous solvent, wherein, after repeating charge of the nonaqueous electrolyte secondary battery to an overcharge region and discharge for the charge 20 times, a charge capacity of the nonaqueous electrolyte secondary battery for 21st charge is a capacity equal to or greater than 100% SOC (State of Charge), where 100% SOC is an arbitrary capacity indicating that electric potential of the anode is reduced by 5% or greater based on a relative value, compared to electric potential thereof when SOC is 0%.Type: ApplicationFiled: December 5, 2014Publication date: January 5, 2017Applicant: Ricoh Company, Ltd.Inventors: Hisamitsu KAMEZAKI, Nobuaki ONAGI, Masaki YOSHIO
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Publication number: 20160013488Abstract: Provided is a power storage element, including: a positive electrode; a negative electrode containing a carbonaceous material as a negative-electrode active material; and a non-aqueous electrolytic solution obtained by dissolving an electrolyte in a non-aqueous solvent, wherein a crystallite size Lc(002) of the carbonaceous material in a c-axis direction is from 1.65 nm to 241.1 nm, and wherein cations of electrolyte ions are intercalated into and deintercalated from the negative electrode, and anions thereof are intercalated into and deintercalated from the positive electrode.Type: ApplicationFiled: July 9, 2015Publication date: January 14, 2016Inventors: Hisamitsu KAMEZAKI, Nobuaki ONAGI, Masaki YOSHIO
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Publication number: 20150303512Abstract: To provide a nonaqueous electrolytic storage element, which contains: a positive electrode, which contains a positive electrode material layer including a positive electrode active material capable of reversibly accumulating and releasing anions; a negative electrode, which contains a negative electrode material layer including a negative electrode active material capable of reversibly accumulating and releasing cations; a separator provided between the positive electrode and the negative electrode; and a nonaqueous electrolyte containing an electrolyte salt, wherein a pore volume of the negative electrode material layer per unit area of the negative electrode is larger than a pore volume of the positive electrode material layer per unit area of the positive electrode.Type: ApplicationFiled: December 12, 2013Publication date: October 22, 2015Inventors: Okitoshi KIMURA, Nobuaki ONAGI, Eiko HIBINO, Hisamitsu KAMEZAKI, Anna HIROWATARI, Yasunori SUGIMOTO
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Publication number: 20150303513Abstract: To provide nonaqueous electrolytic storage element, containing: a positive electrode, which contains a positive electrode active material capable of accumulating and releasing anions; a negative electrode containing a negative electrode active material capable of accumulating and releasing cations; and a nonaqueous electrolyte containing an electrolyte salt, wherein a capacity of the negative electrode per unit area is larger than a capacity of the positive electrode per unit area, and wherein an amount of the electrolyte salt in the nonaqueous electrode at the time of completion of charging after 50 cycles of charging and discharging is 0.2 mol/L to 1 mol/L, where the cycle of charging and discharging contains charging the nonaqueous electrolytic storage element to 5.2 V with constant electric current of 0.5 mA/cm2, followed by discharging the nonaqueous electrolytic storage element to 2.5 V with constant electric current of 0.5 mA/cm2.Type: ApplicationFiled: December 25, 2013Publication date: October 22, 2015Inventors: Anna HIROWATARI, Eiko HIBINO, Nobuaki ONAGI, Okitoshi KIMURA, Hisamitsu KAMEZAKI, Yasunori SUGIMOTO
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Publication number: 20150287537Abstract: To provide a nonaqueous electrolytic capacitor element, which contains: a positive electrode containing a positive electrode active material capable of intercalating or deintercalating anions; a negative electrode containing a negative electrode active material; and a nonaqueous electrolyte, which contains a nonaqueous solvent, an electrolyte salt containing a halogen atom, and a compound having a site capable of bonding to an anion containing a halogen atom.Type: ApplicationFiled: November 11, 2013Publication date: October 8, 2015Applicants: Ricoh Company, Ltd., Kyushu UniversityInventors: Nobuaki Onagi, Okitoshi Kimura, Eiko Hibino, Hisamitsu Kamezaki, Tatsumi Ishihara
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Publication number: 20140212705Abstract: A solid dye sensitization type solar cell includes a substrate, a first electrode disposed on the substrate, an electron transport layer including an electron transport semiconductor and disposed on the first electrode, the electron transport layer including a photosensitizing compound adsorbed on a surface of the electron transport semiconductor, a hole transport layer disposed on the electron transport layer, and a second electrode disposed on the hole transport layer. Each of the first electrode and the second electrode includes divided multiple electrodes.Type: ApplicationFiled: January 15, 2014Publication date: July 31, 2014Applicant: RICOH COMPANY, LTD.Inventors: Tamotsu Horiuchi, Tohru Yashiro, Hiroshi Deguchi, Hisamitsu Kamezaki, Takumi Yamaga, Keiichiroh Yutani, Yuko Arizumi
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Patent number: 8207330Abstract: A two-photon absorption material represented by the following General Formula (I): where R1 to R8 each represent hydrogen, halogen, a carboxyl group, a carboxylic acid ester group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted alkyl group; one to three of X1 to X4 each represent a substituted or unsubstituted amino group, a substituted or unsubstituted aminophenyl group, a substituted or unsubstituted dialkylaminophenyl group, a substituted or unsubstituted N,N-diphenyl-aminophenyl group, a substituted or unsubstituted indolyl group, or a substituted or unsubstituted azulenyl group, and the other represents or the others each represent hydrogen, halogen, a carboxyl group, a carboxylic acid ester group, a substituted or unsubstituted aryl group, a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted alkyl group or a perhalogenoalkyl group; and M represents two hydrogen atoms or a divalent, trivalent or tetravalent metal atom which may have oxygen orType: GrantFiled: April 14, 2009Date of Patent: June 26, 2012Assignee: Ricoh Company, Ltd.Inventors: Tatsuya Tomura, Tsutomu Sato, Takeshi Miki, Mikiko Takada, Hisamitsu Kamezaki
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Publication number: 20120125414Abstract: The photoelectric converter includes a substrate; and multiple cells located on the substrate so as to be overlaid. The first cell contacted with the substrate includes a transparent electrode located on the substrate, and a first photoelectric conversion layer located on the transparent electrode. The other cell or each of the others of the multiple cells includes a porous electroconductive layer located closer to the substrate and including an electroconductive material, and a photoelectric conversion layer located on the porous electroconductive layer. Each of the photoelectric conversion layers of the multiple cells includes an electron transport layer including an electron transport material, a dye connected with or adsorbed on the electron transport material, and a hole transport material. The hole transport material is also contained in voids of the porous electroconductive layer.Type: ApplicationFiled: October 27, 2011Publication date: May 24, 2012Applicant: RICOH COMPANY, LTD.Inventors: Hisamitsu KAMEZAKI, Yoshihisa NAIJO, Tohru YASHIRO, Tamotsu HORIUCHI, Masafumi TORII
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Publication number: 20100056775Abstract: A two-photon absorption material represented by the following General Formula (I): where R1 to R8 each represent hydrogen, halogen, a carboxyl group, a carboxylic acid ester group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted alkyl group; one to three of X1 to X4 each represent a substituted or unsubstituted amino group, a substituted or unsubstituted aminophenyl group, a substituted or unsubstituted dialkylaminophenyl group, a substituted or unsubstituted N,N-diphenyl-aminophenyl group, a substituted or unsubstituted indolyl group, or a substituted or unsubstituted azulenyl group, and the other represents or the others each represent hydrogen, halogen, a carboxyl group, a carboxylic acid ester group, a substituted or unsubstituted aryl group, a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted alkyl group or a perhalogenoalkyl group; and M represents two hydrogen atoms or a divalent, trivalent or tetravalent metal atom which may have oxygen orType: ApplicationFiled: April 14, 2009Publication date: March 4, 2010Inventors: Tatsuya TOMURA, Tsutomu Sato, Takeshi Miki, Mikiko Takada, Hisamitsu Kamezaki
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Patent number: 7636289Abstract: An object of the invention is to provide an optical-recording medium in which problems such as cross-write, i.e., signals are recorded wrongly on adjacent tracks, and cross-erase i.e., recording signals on adjacent tracks are erased wrongly, can be solved, and which enables high-density recording; a method for producing the optical-recording medium; and a method for recording and reproducing an optical-recording medium. To achieve this object, the optical-recording medium includes a substrate, an optical-absorption layer which absorbs light and generates heat on or above the substrate, a recording layer, and record-blocking portions which block recording on the recording layer, in which the record-blocking portions are disposed between the recording layer and the optical-absorption layer, and between adjacent tracks, and recording marks are formed on the recording layer by the optical absorption function of the optical-absorption layer.Type: GrantFiled: August 19, 2005Date of Patent: December 22, 2009Assignee: Ricoh Company, Ltd.Inventors: Yoshitaka Hayashi, Hiroshi Miura, Hisamitsu Kamezaki
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Patent number: 7413788Abstract: For recording information at high density even at blue-laser wavelengths, a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.Type: GrantFiled: June 23, 2005Date of Patent: August 19, 2008Assignee: Ricoh Company, Ltd.Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki
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Publication number: 20080068970Abstract: An object of the invention is to provide an optical-recording medium in which problems such as cross-write, i.e., signals are recorded wrongly on adjacent tracks, and cross-erase i.e., recording signals on adjacent tracks are erased wrongly, can be solved, and which enables high-density recording; a method for producing the optical-recording medium; and a method for recording and reproducing an optical-recording medium. To achieve this object, the optical-recording medium includes a substrate, an optical-absorption layer which absorbs light and generates heat on or above the substrate, a recording layer, and record-blocking portions which block recording on the recording layer, in which the record-blocking portions are disposed between the recording layer and the optical-absorption layer, and between adjacent tracks, and recording marks are formed on the recording layer by the optical absorption function of the optical-absorption layer.Type: ApplicationFiled: August 19, 2005Publication date: March 20, 2008Applicant: RICOH COMPANY, LTD.Inventors: Yoshitaka Hayashi, Hiroshi Miura, Hisamitsu Kamezaki
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Publication number: 20060003136Abstract: For recording information at high density even at blue-laser wavelengths a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.Type: ApplicationFiled: June 23, 2005Publication date: January 5, 2006Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki
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Patent number: 6982110Abstract: An information recording medium includes a transparent substrate and a recording layer or a metal layer provided on the transparent substrate directly or via a ground layer. The information recording medium has a RAM area on which information is recorded, reproduced or erased, and a ROM area from which only reproduction is made, and an average thickness of the recording layer of said RAM area is larger than that of the recording layer or metal layer of the ROM area.Type: GrantFiled: May 23, 2002Date of Patent: January 3, 2006Assignee: Ricoh Company, Ltd.Inventors: Hisamitsu Kamezaki, Yasuo Sawada, Yasuhide Fujiwara
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Patent number: 6933032Abstract: For recording information at high density even at blue-laser wavelengths, a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.Type: GrantFiled: April 14, 2004Date of Patent: August 23, 2005Assignee: Ricoh Company, Ltd.Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki
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Patent number: 6866910Abstract: An information recording medium including a transparent substrate, and a recording layer or a metallic layer formed on the transparent substrate directly or through an undercoat layer, with an amplitude attenuation time of 1 second or less and/or a vibration frequency attenuation time of 3 seconds or less, when vibrated in the direction perpendicular to the flat surface of said information recording medium, or wherein when the information recording medium is in-plane vibrated in the direction perpendicular to the extending direction of information recording, reproducing and/or deleting tracks, a maximum in-plane deviation of a recording, reproducing or deleting position in the tracks in the perpendicular direction from a correct recording, reproducing or deleting position in the tracks is 12.Type: GrantFiled: May 20, 2003Date of Patent: March 15, 2005Assignee: Ricoh Company, Ltd.Inventors: Hisamitsu Kamezaki, Ippei Ogawa
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Publication number: 20040265532Abstract: For recording information at high density even at blue-laser wavelengths, a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.Type: ApplicationFiled: April 14, 2004Publication date: December 30, 2004Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki