Patents by Inventor Kiyoshi Asahina
Kiyoshi Asahina 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: 9618311Abstract: A blast treatment method for blasting an object includes: a step in which an explosive is detonated inside a pressure vessel (30) which has an elasto-plastic metal, thereby imparting to the pressure vessel (30) an initial load wherein the primary and secondary stress generated in at least a portion of the pressure vessel becomes high enough to be in a plastic region exceeding the elastic region, thereby generating a shakedown state in the pressure vessel (30); and a subsequent step in which a treatment explosive (50) is detonated within the pressure vessel (30), thereby blasting the object (10).Type: GrantFiled: January 22, 2013Date of Patent: April 11, 2017Assignee: Kobe Steel, Ltd.Inventors: Koichi Hayashi, Takao Shirakura, Kiyoshi Asahina
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Patent number: 9327809Abstract: Provided are a salvage container and a salvaging method capable of salvaging ammunition dumped into the sea using a simple configuration while more reliably suppressing the leakage of a chemical agent from the ammunition. A salvage container includes: a container body (30); a lid (40) that blocks an opening portion of the container body (30); a gasket (70) that is formed of a compressively deformable member and that blocks a gap between an inner side surface (33) of the container body (30) and the lid (40) from the outer side in a specific direction; and a gasket presser (50) that clamps the gasket (70) between the gasket presser (50) and the lid (40).Type: GrantFiled: March 5, 2012Date of Patent: May 3, 2016Assignee: Kobe Steel, Ltd.Inventors: Atsushi Shinkai, Kiyoshi Asahina, Kenji Tamai
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Patent number: 8957276Abstract: An aspect of the present invention is a method of processing a waste material that contains mercury or a mercury compound, and chlorine or a mercury chloride, the method including a step of adding a chlorine scavenger to the waste material, and stowing the waste material in a treatment vessel; and a step of subjecting the waste material to a blasting treatment by fitting an explosive to the treatment vessel and detonating the explosive inside a pressure-proof container.Type: GrantFiled: May 12, 2010Date of Patent: February 17, 2015Assignees: National Institute of Advanced Industrial Science and Technology, Kobe Steel, Ltd.Inventors: Takehiro Matsunaga, Ken Okada, Miyako Akiyoshi, Shiyuu Usuba, Masaya Ueda, Koichi Hayashi, Kiyoshi Asahina
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Publication number: 20140352522Abstract: Provided is a blast treatment method with which the object to be treated can be treated more reliably and efficiently. This method includes: a step wherein an explosive is detonated inside a pressure vessel (30) comprising an elasto-plastic metal, thereby imparting to the pressure vessel (30) an initial load wherein the primary + secondary stress generated in at least a portion of the structural parts of the pressure vessel becomes a stress that is included in a plastic region exceeding the elastic region, thereby generating a shakedown state in the pressure vessel (30); and a subsequent step wherein a treatment explosive (50) is detonated within the pressure vessel (30), thereby blasting the object (10) to be treated.Type: ApplicationFiled: January 22, 2013Publication date: December 4, 2014Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Koichi Hayashi, Takao Shirakura, Kiyoshi Asahina
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Publication number: 20130340662Abstract: Provided are a salvage container and a salvaging method capable of salvaging ammunition dumped into the sea using a simple configuration while more reliably suppressing the leakage of a chemical agent from the ammunition. A salvage container includes: a container body (30); a lid (40) that blocks an opening portion of the container body (30); a gasket (70) that is formed of a compressively deformable member and that blocks a gap between an inner side surface (33) of the container body (30) and the lid (40) from the outer side in a specific direction; and a gasket presser (50) that clamps the gasket (70) between the gasket presser (50) and the lid (40).Type: ApplicationFiled: March 5, 2012Publication date: December 26, 2013Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Atsushi Shinkai, Kiyoshi Asahina, Kenji Tamai
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Patent number: 8512479Abstract: Provided is a method of cleaning the inside of a pressure vessel for blasting to enable a short-time treatment regardless of the state of residual substances. This method includes: a step of setting an explosive for cleaning, different from an explosive for blasting, in an amount necessary for decomposing a residue of the object inside of a pressure vessel after a blasting step of setting and blasting the object and the explosive for blasting in the pressure vessel; and a step of decomposing the residue by exploding the explosive for cleaning in the pressure vessel.Type: GrantFiled: April 26, 2007Date of Patent: August 20, 2013Assignee: Kobe Steel, Ltd.Inventors: Kiyoshi Asahina, Ryusuke Kitamura, Keiichi Ishiyama, Tsuyoshi Imakita, Shigeo Tachibana
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Patent number: 8464624Abstract: A blast treatment method and an apparatus, which can perform the blast treatment of a treatment subject by using and securely initiating a blasting explosive having fluidity. The blast treatment method includes: a blasting preparation operation of housing a blasting explosive having fluidity in a container and placing the blasting explosive around a treatment subject as well as attaching an initiation device to the container; a housing operation of housing the container, the blasting explosive, and the treatment subject in a chamber; a decompression operation of decompressing the inside of the chamber; and a blasting operation of initiating the blasting explosive and blasting the treatment subject with the blasting explosive. In the decompression operation, the inside of the chamber is decompressed while a gas vent portion regulates the escape of the blasting explosive to the outside of the container and permits the escape of gases in the container to the outside.Type: GrantFiled: March 24, 2010Date of Patent: June 18, 2013Assignee: Kobe Steel, Ltd.Inventors: Kiyoshi Asahina, Kenji Koide, Takashi Gotou, Hideaki Shimoda, Ryusuke Kitamura, Nakaba Tsutsui
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Patent number: 8171837Abstract: It is intended to provide a pressure container which can prevent dispersion of a hazardous substance or the like to the exterior and ensure a high level of safety with a simple structure. To achieve this object, a pressure container (10) comprises an outer vessel (30) and an inner vessel (40) which receives an impact load produced at the time of blasting disposal operation. The inner vessel (40) is disposed inside the outer vessel (30). The inner vessel (40) has a pressure relieving part (50) which can discharge part of high-pressure gas produced in the inner vessel (40) at the time of the blasting disposal operation into a gap formed between the inner vessel (40) and the outer vessel (30).Type: GrantFiled: April 27, 2007Date of Patent: May 8, 2012Assignee: Kobe Steel, Ltd.Inventors: Kiyoshi Asahina, Ryusuke Kitamura, Kenji Tamai, Takao Shirakura
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Patent number: 8153855Abstract: The object is to rapidly clean-up an off-gas generated by blasting in a pressure vessel to such a level as to permit the exhaust of the off-gas. An object to be blasted is blasted in a pressure vessel to generate an off-gas, which is introduced into a combustion furnace to burning a combustible component contained in the off-gas. The off-gas after the burning in a reservoir section is stored in the reservoir section, and exhausted out of the reservoir section if a component contained in the off-gas complies a predetermined emission requirement, otherwise returned to at least one of the pressure vessel and the combustion furnace to be re-treated if the component does not comply the emission requirement.Type: GrantFiled: April 16, 2007Date of Patent: April 10, 2012Assignees: Kobe Steel, Ltd., Ceramatec, Inc.Inventors: Kiyoshi Asahina, Masato Katayama, Ryusuke Kitamura, Joseph J. Hartvigsen, Singaravelu Elangovan
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Publication number: 20120017753Abstract: A blast treatment method and an apparatus, which can perform the blast treatment of a treatment subject by using and securely initiating a blasting explosive having fluidity. The blast treatment method includes: a blasting preparation operation of housing a blasting explosive having fluidity in a container and placing the blasting explosive around a treatment subject as well as attaching an initiation device to the container; a housing operation of housing the container, the blasting explosive, and the treatment subject in a chamber; a decompression operation of decompressing the inside of the chamber; and a blasting operation of initiating the blasting explosive and blasting the treatment subject with the blasting explosive. In the decompression operation, the inside of the chamber is decompressed while a gas vent portion regulates the escape of the blasting explosive to the outside of the container and permits the escape of gases in the container to the outside.Type: ApplicationFiled: March 24, 2010Publication date: January 26, 2012Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Kiyoshi Asahina, Kenji Koide, Takashi Gotou, Hideaki Shimoda, Ryusuke Kitamura, Nakaba Tsutsui
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Patent number: 8042446Abstract: An object of the present invention is to improve durability of a pressure vessel for blasting an article to be treated such as hazardous substance or explosive therein. The pressure vessel 10, means for achieving the object, has an external vessel 31 and an internal vessel 32 installed in the external vessel 31. The external vessel 31 has a strength for retaining pressure caused by blasting the article. The internal vessel 32 receives fragments of the treated article 100 to protect the external vessel 31 against the fragments. The internal vessel 32 preferably covers almost entire internal surface of the external vessel 31.Type: GrantFiled: March 6, 2006Date of Patent: October 25, 2011Assignees: National Institute of Advanced Industrial Science and Technology, Kabushiki Kaisha Kobe Seiko ShoInventors: Shuzo Fujiwara, Takehiro Matsunaga, Kiyoshi Asahina, Kenji Tamai, Kenji Koide, Katsuo Kurose
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Patent number: 8006600Abstract: A method of blasting hazardous substance or explosive in a pressure vessel is provided to improve efficiency while suppressing enlargement of the pressure vessel. To achieve it, the method includes an installing step of installing two or more articles to be treated at a certain spacing in the pressure vessel, an initial blasting step of blasting one of the articles to be treated, and a following blasting step of blasting the article to be treated next to the previously blasted article to be treated after a particular time from the instant of the previous blast. Each of the articles is blasted sequentially through the initial and following blasting steps.Type: GrantFiled: March 6, 2006Date of Patent: August 30, 2011Assignees: Kabushiki Kaisha Kobe Seiko Sho, National Institute of Advanced Industrial Science and TechnologyInventors: Shuzo Fujiwara, Takehiro Matsunaga, Kiyoshi Asahina, Kenji Koide, Takashi Gotou, Hideaki Shimoda
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Patent number: 7913571Abstract: The present invention aims at estimating a residual life of a blasting vessel. For the estimation, a strain gauge 30 is attached to a blasting vessel 10. The strain gauge 30 measures high-frequency repetitive strain caused in the blasting chamber 10 in each explosion. Strain waveform data obtained with the strain gauge 30 is analyzed to calculate the cumulative degree of fatigue damage due to a high-frequency repetitive load applied to the blasting vessel 10 in each explosion. A residual life of the blasting vessel 10 is estimated on the basis of a cumulative value of the cumulative degrees of fatigue damage.Type: GrantFiled: February 28, 2006Date of Patent: March 29, 2011Assignee: Kobe Steel, Ltd.Inventors: Kiyoshi Asahina, Ryusuke Kitamura, Toshio Hamada, Takao Shirakura
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Patent number: 7866244Abstract: It is intended to provide a blasting treatment apparatus which can prevent dispersion of a hazardous substance or the like to the exterior with a simple structure. To achieve this object, a blasting treatment apparatus (1) comprises a pressure container (10) including an outer vessel (31) and an inner vessel (32) and a suction device. The outer vessel (32) has a first sucking part (17) and a second sucking part (18) for interconnecting the interior and the exterior of the outer vessel (31) at an end thereof opposite to a pressure-resistant lid (11) and in an upper wall. The inner vessel (32) has an interconnect hole (16) for interconnecting the interior and the exterior of the inner vessel (32) at a location thereof corresponding to the first sucking part (17).Type: GrantFiled: April 20, 2007Date of Patent: January 11, 2011Assignee: Kobe Steel, Ltd.Inventors: Kiyoshi Asahina, Ryusuke Kitamura
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Publication number: 20100292525Abstract: An aspect of the present invention is a method of processing a waste material that contains mercury or a mercury compound, and chlorine or a mercury chloride, the method including a step of adding a chlorine scavenger to the waste material, and stowing the waste material in a treatment vessel; and a step of subjecting the waste material to a blasting treatment by fitting an explosive to the treatment vessel and detonating the explosive inside a pressure-proof container.Type: ApplicationFiled: May 12, 2010Publication date: November 18, 2010Inventors: Takehiro Matsunaga, Ken Okada, Miyako Akiyoshi, Shiyuu Usuba, Masaya Ueda, Koichi Hayashi, Kiyoshi Asahina
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Publication number: 20090260509Abstract: It is intended to provide a pressure container which can prevent dispersion of a hazardous substance or the like to the exterior and ensure a high level of safety with a simple structure. To achieve this object, a pressure container (10) comprises an outer vessel (30) and an inner vessel (40) which receives an impact load produced at the time of blasting disposal operation. The inner vessel (40) is disposed inside the outer vessel (30). The inner vessel (40) has a pressure relieving part (50) which can discharge part of high-pressure gas produced in the inner vessel (40) at the time of the blasting disposal operation into a gap formed between the inner vessel (40) and the outer vessel (30).Type: ApplicationFiled: April 27, 2007Publication date: October 22, 2009Inventors: Kiyoshi Asahina, Ryusuke Kitamura, Kenji Tamai, Takao Shirakura
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Publication number: 20090229451Abstract: It is intended to provide a blasting treatment apparatus which can prevent dispersion of a hazardous substance or the like to the exterior with a simple structure. To achieve this object, a blasting treatment apparatus (1) comprises a pressure container (10) including an outer vessel (31) and an inner vessel (32) and a suction device. The outer vessel (32) has a first sucking part (17) and a second sucking part (18) for interconnecting the interior and the exterior of the outer vessel (31) at an end thereof opposite to a pressure-resistant lid (11) and in an upper wall. The inner vessel (32) has an interconnect hole (16) for interconnecting the interior and the exterior of the inner vessel (32) at a location thereof corresponding to the first sucking part (17).Type: ApplicationFiled: April 20, 2007Publication date: September 17, 2009Applicant: KABUSHIKI KAISHA KOBE SEIKO SHOInventors: Kiyoshi Asahina, Ryusuke Kitamura
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Publication number: 20090165636Abstract: Provided is a method of cleaning the inside of a pressure vessel for blasting to enable a short-time treatment regardless of the state of residual substances. This method includes: a step of setting an explosive for cleaning, different from an explosive for blasting, in an amount necessary for decomposing a residue of the object inside of a pressure vessel after a blasting step of setting and blasting the object and the explosive for blasting in the pressure vessel; and a step of decomposing the residue by exploding the explosive for cleaning in the pressure vessel.Type: ApplicationFiled: April 26, 2007Publication date: July 2, 2009Applicant: KABUSHIKI KAISHA KOBE SEIKO SHOInventors: Kiyoshi Asahina, Ryusuke Kitamura, Keiichi Ishiyama, Tsuyoshi Imakita, Shigeo Tachibana
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Publication number: 20090131733Abstract: The object is to rapidly clean-up an off-gas generated by blasting in a pressure vessel to such a level as to permit the exhaust of the off-gas. An object to be blasted is blasted in a pressure vessel to generate an off-gas, which is introduced into a combustion furnace to burning a combustible component contained in the off-gas. The off-gas after the burning in a reservoir section is stored in the reservoir section, and exhausted out of the reservoir section if a component contained in the off-gas complies a predetermined emission requirement, otherwise returned to at least one of the pressure vessel and the combustion furnace to be re-treated if the component does not comply the emission requirement.Type: ApplicationFiled: April 16, 2007Publication date: May 21, 2009Inventors: Kiyoshi Asahina, Masato Katayama, Ryusuke Kitamura, Joseph J. Hartvigsen, Singaravelu Elangovan
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Publication number: 20090095146Abstract: An object of the present invention is to improve durability of a pressure vessel for blasting an article to be treated such as hazardous substance or explosive therein. The pressure vessel 10, means for achieving the object, has an external vessel 31 and an internal vessel 32 installed in the external vessel 31. The external vessel 31 has a strength for retaining pressure caused by blasting the article. The internal vessel 32 receives fragments of the treated article 100 to protect the external vessel 31 against the fragments. The internal vessel 32 preferably covers almost entire internal surface of the external vessel 31.Type: ApplicationFiled: March 6, 2006Publication date: April 16, 2009Applicants: NATIONAL INSTITUTE OF ADVANCED INDUST SCI & TECH, KABUSHIKI KAISHA KOBE SEIKO SHOInventors: Shuzo Fujiwara, Takehiro Matsunaga, Kiyoshi Asahina, Kenji Tamai, Kenji Koide, Katsuo Kurose