Patents by Inventor Atsushi Yanai
Atsushi Yanai 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: 11401188Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.Type: GrantFiled: April 12, 2018Date of Patent: August 2, 2022Assignee: ISHIGAKI COMPANY LIMITEDInventors: Manabu Yamashita, Masakazu Morita, Hiroyuki Mino, Yasuaki Nishihara, Atsushi Yanai, Ryosuke Tamauchi, Yasutaka Suetsugu, Masayoshi Katayama
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Patent number: 10974982Abstract: A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.Type: GrantFiled: January 6, 2016Date of Patent: April 13, 2021Assignee: ISHIGAKI COMPANY LIMITEDInventors: Manabu Yamashita, Masakazu Morita, Hiroyuki Mino, Yasuaki Nishihara, Atsushi Yanai, Ryosuke Tamauchi, Yasutaka Suetsugu, Masayoshi Katayama
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Publication number: 20180230036Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.Type: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Applicant: ISHIGAKI COMPANY LIMITEDInventors: Manabu YAMASHITA, Masakazu MORITA, Hiroyuki MINO, Yasuaki NISHIHARA, Atsushi YANAI, Ryosuke TAMAUCHI, Yasutaka SUETSUGU, Masayoshi KATAYAMA
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Patent number: 9975798Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.Type: GrantFiled: January 6, 2016Date of Patent: May 22, 2018Assignee: ISHIGAKI COMPANY LIMITEDInventors: Manabu Yamashita, Masakazu Morita, Hiroyuki Mino, Yasuaki Nishihara, Atsushi Yanai, Ryosuke Tamauchi, Yasutaka Suetsugu, Masayoshi Katayama
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Publication number: 20160115065Abstract: A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.Type: ApplicationFiled: January 6, 2016Publication date: April 28, 2016Applicant: ISHIGAKI COMPANY LIMITEDInventors: Manabu Yamashita, Masakazu Morita, Hiroyuki Mino, Yasuaki Nishihara, Atsushi Yanai, Ryosuke Tamauchi, Yasutaka Suetsugu, Masayoshi Katayama
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Publication number: 20160115066Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.Type: ApplicationFiled: January 6, 2016Publication date: April 28, 2016Applicant: ISHIGAKI COMPANY LIMITEDInventors: Manabu Yamashita, Masakazu Morita, Hiroyuki Mino, Yasuaki Nishihara, Atsushi Yanai, Ryosuke Tamauchi, Yasutaka Suetsugu, Masayoshi Katayama
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Publication number: 20110140665Abstract: A power supply device is provided that includes a battery pack 10, and forcedly discharging circuits 20. The battery pack 10 includes serially-connected rechargeable battery cells 2. The forcedly discharging circuits 20 are connected to the battery cells 2 in parallel so that, when a cell voltage of a battery cell is becomes higher than a predetermined voltage, this battery cell is forcedly discharged. The forcedly discharging circuits 20 are composed of analog circuits. When a cell voltage of a battery cell exceeds the predetermined voltage, one of the forcedly discharging circuits 20 corresponding to this battery cell forcedly discharges this battery cell. Since forcedly discharging circuit 20 is not composed of controlling software but is physically composed of an analog circuit, the forcedly discharging circuit can stably operate without malfunction caused by noise. A power supply device can be provided that includes a protection circuit with improved reliability.Type: ApplicationFiled: December 16, 2010Publication date: June 16, 2011Inventors: Shigeto TAMEZANE, Kimihiko FURUKAWA, Atsushi YANAI
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Patent number: 7544443Abstract: A nonaqueous electrolyte secondary battery 10 according to an embodiment of the present invention includes a positive electrode 11 having a positive electrode active material that can intercalate and deintercalate lithium, a negative electrode 12 having a negative electrode active material that can intercalate and deintercalate lithium, and a nonaqueous electrolyte having lithium ion conductivity. The positive electrode active material is a layered lithium transition metal composite oxide (for example, one represented by Li1+x(NiyCozMn1?y?z)1?xO2 (where 0?x?0.15, 0.1?y?0.6, and 0?z?0.5)) to which an IVa group element (Zr) and a Va group element (Nb) are added. According to these features, it is possible to provide a nonaqueous electrolyte secondary battery with a selected element to be added to the lithium transition metal composite oxide to reduce the I-V resistance (improve the I-V characteristic), and thereby improving the output/input characteristics.Type: GrantFiled: March 6, 2007Date of Patent: June 9, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Toyoki Fujihara, Atsushi Yanai, Naoya Nakanishi, Toshiyuki Nohma, Keisuke Minami
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Patent number: 7452636Abstract: A lithium secondary battery including a positive electrode, a negative electrode including a carbon material as an active material, and a nonaqueous electrolyte comprising a solute dissolved in a nonaqueous solvent in which ?-butyrolactone is the main solvent, wherein the carbon material has a ratio (ID/IG) of a Raman spectrum intensity (a peak intensity ratio) (R) obtained by Raman spectroscopy of 0.2 or greater, and the nonaqueous electrolyte includes at least 0.1 part by weight of vinylene carbonate and at least 0.1 part by weight of vinyl ethylene carbonate in 100 parts by weight of the nonaqueous electrolyte.Type: GrantFiled: March 4, 2004Date of Patent: November 18, 2008Assignee: SANYO Electric Co., Ltd.Inventors: Atsushi Yanai, Katsunori Yanagida, Yoshinori Kida, Takaaki Ikemachi, Toshiyuki Nohma
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Patent number: 7378190Abstract: Storage performance in a charged state is improved with a non-aqueous electrolyte secondary battery using gamma-butyrolactone as a solvent. A non-aqueous electrolyte secondary battery includes a positive electrode (2) containing a positive electrode active material including a lithium-containing transition metal oxide; a negative electrode (1) containing a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte including a solute and a solvent; wherein the solvent contains 50 volume % or more of gamma-butyrolactone with respect to the total volume of the solvent, and the positive electrode active material contains a phosphate salt M1PO4, where M1 is a metal element capable of having a valency of 3.Type: GrantFiled: March 17, 2005Date of Patent: May 27, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Atsushi Yanai, Yoshinori Kida, Toshiyuki Nohma
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Patent number: 7335446Abstract: Cycle performance is improved without degrading initial efficiency of a non-aqueous electrolyte secondary battery that includes a positive electrode, a negative electrode, a non-aqueous electrolyte containing a solute and a solvent, the positive electrode including a positive electrode active material made of a lithium-containing transition metal oxide that contains lithium and cobalt and has a layered structure. The lithium-containing transition metal oxide is at least partially covered with a surface-treatment layer containing a phosphate compound represented by the chemical formula M1POk, where M1 is at least one element that can have a valency of 3 and k is an integer in a range of 2 to 4, and the lithium-containing transition metal oxide contains a group IVA element M2 and a group IIA element M3 of the periodic table.Type: GrantFiled: February 23, 2005Date of Patent: February 26, 2008Assignee: SANYO Electric Co., Ltd.Inventors: Takanobu Chiga, Katsunori Yanagida, Atsushi Yanai, Yoshinori Kida
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Publication number: 20070212607Abstract: A nonaqueous electrolyte secondary battery 10 according to an embodiment of the present invention includes a positive electrode 11 having a positive electrode active material that can intercalate and deintercalate lithium, a negative electrode 12 having a negative electrode active material that can intercalate and deintercalate lithium, and a nonaqueous electrolyte having lithium ion conductivity. The positive electrode active material is a layered lithium transition metal composite oxide (for example, one represented by Li1+x(NiyCozMn1-y-z)1-xO2 (where 0?x?0.15, 0.1?y?0.6, and 0?z?0.5)) to which an IVa group element (Zr) and a Va group element (Nb) are added. According to these features, it is possible to provide a nonaqueous electrolyte secondary battery with a selected element to be added to the lithium transition metal composite oxide to reduce the I-V resistance (improve the I-V characteristic), and thereby improving the output/input characteristics.Type: ApplicationFiled: March 6, 2007Publication date: September 13, 2007Applicant: SANYO ELECTRIC CO., LTD.Inventors: Toyoki Fujihara, Atsushi Yanai, Naoya Nakanishi, Toshiyuki Nohma, Keisuke Minami
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Publication number: 20060063070Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery comprising a lithium-transition metal oxide having a layered structure and containing at least cobalt as a transition metal, wherein at least part of the surface of the lithium-transition metal oxide is coated by a treatment layer comprising low-temperature phase lithium cobalt oxide.Type: ApplicationFiled: September 22, 2005Publication date: March 23, 2006Inventors: Takanobu Chiga, Atsushi Yanai, Yoshinori Kida, Toshiyuki Nohma
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Publication number: 20050233222Abstract: Charge-discharge characteristics are improved in a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte containing a phosphoric ester compound as a solvent. In a non-aqueous electrolyte for secondary batteries containing a phosphoric ester compound, a lithium salt having an oxalato complex as an anion is contained as a solute. Preferably, the non-aqueous electrolyte contains lithium bis(oxalato)borate at a concentration of 0.01 to 0.2 mol/L with respect to the solvent, and more preferably, the non-aqueous electrolyte also contains vinylene carbonate.Type: ApplicationFiled: March 11, 2005Publication date: October 20, 2005Inventors: Katsunori Yanagida, Takanobu Chiga, Atsushi Yanai, Yoshinori Kida
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Publication number: 20050208384Abstract: Storage performance in a charged state is improved with a non-aqueous electrolyte secondary battery using gamma-butyrolactone as a solvent. A non-aqueous electrolyte secondary battery includes a positive electrode (2) containing a positive electrode active material including a lithium-containing transition metal oxide; a negative electrode (1) containing a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte including a solute and a solvent; wherein the solvent contains 50 volume % or more of gamma-butyrolactone with respect to the total volume of the solvent, and the positive electrode active material contains a phosphate salt M1PO4, where M1 is a metal element capable of having a valency of 3.Type: ApplicationFiled: March 17, 2005Publication date: September 22, 2005Inventors: Atsushi Yanai, Yoshinori Kida, Toshiyuki Nohma
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Publication number: 20050196674Abstract: Cycle performance is improved without degrading initial efficiency of a non-aqueous electrolyte secondary battery that includes a positive electrode, a negative electrode, a non-aqueous electrolyte containing a solute and a solvent, the positive electrode including a positive electrode active material made of a lithium-containing transition metal oxide that contains lithium and cobalt and has a layered structure. The lithium-containing transition metal oxide is at least partially covered with a surface-treatment layer containing a phosphate compound represented by the chemical formula M1POk, where M1 is at least one element that can have a valency of 3 and k is an integer in a range of 2 to 4, and the lithium-containing transition metal oxide contains a group IVA element M2 and a group IIA element M3 of the periodic table.Type: ApplicationFiled: February 23, 2005Publication date: September 8, 2005Inventors: Takanobu Chiga, Katsunori Yanagida, Atsushi Yanai, Yoshinori Kida
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Patent number: 6869546Abstract: For us in nonaqueous electrolyte secondary cells, the invention provides an electrode which comprises a first carbon material serving as a core material, and a second carbon material coating the first carbon material over the surface thereof and containing boron. When used as an active substance for negative electrode to provide a nonaqueous electrolyte secondary cell, the electrode diminishes the reduction of the cell capacity that would result if the cell is allowed to store, giving improved storage characteristics to the cell.Type: GrantFiled: May 23, 2000Date of Patent: March 22, 2005Assignee: Sanyo Electric Co., Ltd.Inventors: Katsunori Yanagida, Atsushi Yanai, Takeshi Maeda, Yoshinori Kida, Atsuhiro Funahashi, Toshiyuki Nohma, Ikuo Yonezu
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Publication number: 20050053838Abstract: Storage performance in a charged state is improved in a non-aqueous electrolyte battery that contains 10 volume % or more of ?-butyrolactone, which is highly safe and reliable, as a solvent. A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material composed of a lithium-containing transition metal oxide containing lithium and cobalt, a negative electrode, and a non-aqueous electrolyte solution composed of a solute and a solvent. The solvent contains 10 volume % or more of ?-butyrolactone with respect to the total solvent, and the positive electrode active material contains a Group IVA element and a Group IIA element of the periodic table.Type: ApplicationFiled: July 23, 2004Publication date: March 10, 2005Inventors: Takeshi Ogasawara, Katsunori Yanagida, Atsushi Yanai, Yoshinori Kida, Toshiyuki Nohma
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Publication number: 20040224230Abstract: A lithium cell includes a positive electrode, a negative electrode employing a carbon material as an active material, and a non-aqueous electrolyte including a solute dissolved in a non-aqueous solvent, and is characterized in that the carbon material in the negative electrode has an RA value (IA/IG) of 0.05 or more, the RA value calculated from a peak intensity (IA) of a broad peak PA having a full width at half maximum of 100 cm−1 or more and a peak intensity (IG) in the vicinity of 1580 cm−1 as determined by laser Raman spectroscopy using an argon ion laser having a wavelength of 514.5 nm, the peak intensity (IA) determined from a peak PD in the vicinity of 1360 cm−1, as determined by the aforesaid laser Raman spectroscopy, which is separated into the broad peak PA having the full width at half maximum of 100 cm−1 or more and a peak PB having a full width at half maximum of less than 100 cm−1.Type: ApplicationFiled: March 9, 2004Publication date: November 11, 2004Inventors: Katsunori Yanagida, Atsushi Yanai, Yoshinori Kida, Takaaki Ikemachi, Toshiyuki Nohma, Takeshi Ogasawara
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Publication number: 20040224235Abstract: A lithium secondary battery including a positive electrode, a negative electrode including a carbon material as an active material, and a nonaqueous electrolyte comprising a solute dissolved in a nonaqueous solvent in which &ggr;-butyrolactone is the main solvent, wherein the carbon material has a ratio (ID/IG) of a Raman spectrum intensity (a peak intensity ratio) (R) obtained by Raman spectroscopy of 0.2 or greater, and the nonaqueous electrolyte includes at least 0.1 part by weight of vinylene carbonate and at least 0.1 part by weight of vinyl ethylene carbonate in 100 parts by weight of the nonaqueous electrolyte.Type: ApplicationFiled: March 4, 2004Publication date: November 11, 2004Inventors: Atsushi Yanai, Katsunori Yanagida, Yoshinori Kida, Takaaki Ikemachi, Toshiyuki Nohma