Patents by Inventor Tetsuo Akiyama
Tetsuo Akiyama 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: 8383547Abstract: The present invention relates to provide an aflatoxin production inhibitor that inhibits aflatoxin production specifically and efficiently, is highly safe, and is practical, and an efficient production method thereof; and a method for controlling aflatoxin contamination that uses the aflatoxin production inhibitor, specifically relating to an aflatoxin production inhibitor that includes at least one of a dioctatin represented by the following formula (I) and a derivative thereof, as an active ingredient: where, in the formula (I), R represents one of hydrogen and a methyl group.Type: GrantFiled: December 19, 2011Date of Patent: February 26, 2013Assignees: Microbial Chemistry Research Foundation, The University of TokyoInventors: Shohei Sakuda, Keita Nakamura, Tetsuo Akiyama, Yoshikazu Takahashi, Yasuhiko Muraoka, Ikuko Kurata
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Publication number: 20120190746Abstract: The present invention relates to provide an aflatoxin production inhibitor that inhibits aflatoxin production specifically and efficiently, is highly safe, and is practical, and an efficient production method thereof; and a method for controlling aflatoxin contamination that uses the aflatoxin production inhibitor, specifically relating to an aflatoxin production inhibitor that includes at least one of a dioctatin represented by the following formula (I) and a derivative thereof, as an active ingredient: where, in the formula (I), R represents one of hydrogen and a methyl group.Type: ApplicationFiled: December 19, 2011Publication date: July 26, 2012Applicants: The University of Tokyo, Microbial Chemistry Research FoundationInventors: Shohei Sakuda, Keita Nakamura, Tetsuo Akiyama, Yoshikazu Takahashi, Yasuhiko Muraoka, Ikuko Kurata
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Publication number: 20100179324Abstract: An anti-tumor agent containing, as an active ingredient, at least one of a sulphostin-related compound represented by the following General Formula (I), a pharmacologically acceptable salt thereof and a hydrate thereof; and a pharmaceutical composition containing the anti-tumor agent: where n is an integer of 1 to 3.Type: ApplicationFiled: January 11, 2010Publication date: July 15, 2010Applicants: Microbial Chemistry Research Foundation, NIPPON KAYAKU KABUSHIKI KAISHAInventors: Tetsuo AKIYAMA, Toru Masuda, Masatoshi Abe
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Patent number: 7699912Abstract: The air-cleaner includes a housing. The air-cleaner includes a filter element located in the housing to filter air taken into the housing. The air-cleaner includes an adsorption element for adsorbing vaporized fuel flowing into the housing. The housing includes first and second housing components having open ends put on each other. The filter element is held between the first and second housing components, separating the housing into a clean side and a dust side. The adsorption element includes a frame at the periphery; and an adsorption portion located inside the frame. One of the first and second housing components as the clean side has an inner side back in the open end, the inner side having a mounting portion having the adsorption element mounted thereto. The mounting portion includes the adsorption element; and a support member placed thereon.Type: GrantFiled: August 7, 2007Date of Patent: April 20, 2010Assignee: Toyo Roki Seizo Kabushiki KaishaInventors: Soichi Uemura, Wataru Sugimoto, Osamu Kaneko, Tetsuo Akiyama, Atsushi Suzuki
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Patent number: 7473306Abstract: An air cleaner is provided with a housing, a filter element disposed inside the housing for filtrating air introduced into the housing, and an adsorption element disposed in the housing for adsorbing gasified fuel in the housing, the adsorption element including an adsorbing member adsorbing gasified fuel and a frame surrounding the adsorbing member to hold the adsorbing member. The air cleaner further includes a plurality of first fusing projections projecting from one surface of the frame, a plurality of ribs formed to an inner surface of the housing so as to project therefrom and extending laterally and transversely to cross each other, and a plurality of second fusing projections formed to the inner surface of the housing at positions corresponding to the location of the first fusing projections formed to the frame of the adsorption element, each of the second projections being surrounded by a pair of crossing ribs.Type: GrantFiled: June 6, 2006Date of Patent: January 6, 2009Assignee: Toyo Roki Seizo Kabushiki KaishaInventors: Soichi Uemura, Tetsuo Akiyama
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Publication number: 20080034974Abstract: The air-cleaner includes a housing. The air-cleaner includes a filter element located in the housing to filter an air taken into the housing. The air-cleaner includes an adsorption element for adsorbing a vaporized fuel flowing into the housing. The housing includes first and second housing components having open ends put on each other. The filter element is held between the first and second housing components, separating the housing into a clean side and a dust side. The adsorption element includes a frame at the periphery; and an adsorption portion located inside of the frame. One housing component of the first and second housing components as the clean side has an inner side back in the open end, the inner side having a mounting portion having the adsorption element mounted thereto. The mounting portion includes the adsorption element; and a support member put on the adsorption element and supporting the adsorption portion. The support member is located back in said one housing component for fixing.Type: ApplicationFiled: August 7, 2007Publication date: February 14, 2008Inventors: Soichi UEMURA, Wataru Sugimoto, Osamu Kaneko, Tetsuo Akiyama, Atsushi Suzuki
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Publication number: 20060272509Abstract: An air cleaner is provided with a housing, a filter element disposed inside the housing for filtrating air introduced into the housing, and an adsorption element disposed in the housing for adsorbing gasified fuel in the housing, the adsorption element including an adsorbing member adsorbing gasified fuel and a frame surrounding the adsorbing member to hold the adsorbing member. The air cleaner further includes a plurality of first fusing projections projecting from one surface of the frame, a plurality of ribs formed to an inner surface of the housing so as to project therefrom and extending laterally and transversely to cross each other, and a plurality of second fusing projections formed to the inner surface of the housing at positions corresponding to the location of the first fusing projections formed to the frame of the adsorption element, each of the second projections being surrounded by a pair of crossing ribs.Type: ApplicationFiled: June 6, 2006Publication date: December 7, 2006Applicant: TOYO ROKI SEIZO KABUSHIKI KAISHAInventors: Soichi Uemura, Tetsuo Akiyama
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Patent number: 6579989Abstract: A sulphostin analogue represented by the general formula, wherein n is an integer of from 0 to 3, provided that a case where n is 2 and steric configurations of C* and P* are S and R, respectively, is excluded, or a pharmaceutically acceptable salt thereof.Type: GrantFiled: November 13, 2001Date of Patent: June 17, 2003Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu KaiInventors: Tomio Takeuchi, Yasuhiko Muraoka, Masatoshi Abe, Tetsuo Akiyama, Shigeko Harada
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Patent number: 6214340Abstract: This invention provides a physiologically active substance having a strong dipeptidyl peptidase IV inhibitory activity. The physiologically active substance sulphostin is obtained by culturing a microorganism belonging to the genus Streptomyces and having an ability to produce the physiologically active substance sulphostin, producing and accumulating this substance in the cultures, and harvesting it from the cultures.Type: GrantFiled: May 12, 2000Date of Patent: April 10, 2001Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu KaiInventors: Tomio Takeuchi, Masa Hamada, Yasuhiko Muraoka, Tetsuo Akiyama, Masatoshi Abe, Hiroshi Naganawa, Yoshikazu Takahashi
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Patent number: 5238229Abstract: Prior to annealing of cold rolled stainless steel strip, soot is deposited on the surface of the stainless steel strip by a soot generating burner, and thereby the heat absorption efficiency of the stainless steel strip in the annealing furnace is increased to enhance the heat treatment capability in the annealing furnace. This soot generating burner forms a flame by injecting a premixed gas at low air ratio of fuel gas and pure oxygen or high oxygen enriched air from the nozzle opening, and an air injection port for injecting air for guiding the flame is formed on the outer circumference of the nozzle opening. By this guide air, the flame is guided to form, so to speak, an air curtain, and it is therefore possible to direct the flame efficiently to the surface of the stainless steel strip, thereby preventing the soot from depositing near the nozzle opening.Type: GrantFiled: March 27, 1992Date of Patent: August 24, 1993Assignees: Nisshin Steel Co., Ltd., Chugai Ro Co., Ltd.Inventors: Takakatsu Adachi, Hitoshi Matsumura, Tetsuo Akiyama
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Patent number: 4785251Abstract: A digital frequency and phase comparator for both detecting a frequency of a digital signal and the phase thereof relative to a reference signal, wherein polarity inversions of the output phase different signal and saturated characteristics of the circuit when the phase difference succeeds a predetermined value are eliminated. The inventive digital frequency and phase comparator includes a time counter, an input holding circuit for holding a first and a second count value of the time counter at two different input timings of an input signal, a first arithmetic device for determining one of the frequency and period of the inputs signal in response to the first and second count values held by the input timing holding device, and a second arithmetic device for determining a phase of the input signal relative to a reference signal in response to a selected one of the first and second count values held in the input timing holding device.Type: GrantFiled: January 21, 1987Date of Patent: November 15, 1988Assignee: Pioneer Electronic CorporationInventors: Tetsuo Akiyama, Satoshi Kusano
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Patent number: 4723235Abstract: A system for playing back information recorded on a recording medium on which a lead-in code and a lead-out code are respectively recorded at the beginning and the end of a program area, comprises a first control means for rapidly moving a pickup device at least across the area of the lead-in code of the recording medium, a second control means for moving back the pickup means when the lead-out code is detected during the movement of the pickup device by the first control means, and means for discriminating the type of recording when the pickup device reaches the program area during the operation of the first and second control means. By this provision, a queuing time before the playback of the recorded program is shortened without a fear of omitting the program area.Type: GrantFiled: June 13, 1984Date of Patent: February 2, 1988Assignee: Pioneer Electronic CorporationInventors: Shigeru Yasuda, Tetsuo Akiyama
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Patent number: 4677602Abstract: A device for controlling recording track jump operations includes a tracking servo loop which is activated when a data detecting point is traversed from an initial recording track on a recording disk to a target recording track. Circuitry is provided for accurate compensation in the event of overshooting the target recording track. A jump signal generating circuit may also be provided to reduce the frequency of generated traverse signals from a first frequency level to a second, lower frequency level when the data detecting point is a selected number of recording tracks away from the target recording track, or to gradually reduce the speed which the data detecting point traverses the recording tracks as the data detecting point moves from the initial recording track to the target recording track.Type: GrantFiled: April 5, 1984Date of Patent: June 30, 1987Assignee: Pioneer Electronic CorporationInventors: Takashi Okano, Tetsuo Akiyama
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Patent number: 4657504Abstract: A burner assembly of a type wherein both the combustion air and gaseous fuel are controlled by a pressure equalizing control device comprises an inner barrel and a combustion air preheating passage both arranged exteriorly of a gaseous fuel supply tube, an annular space defined exteriorly of the gaseous fuel supply tube and communicated with the preheating passage through at least one perforation in the inner barrel, and an exhaust passage provided with an exhaust gas sucking device and disposed adjacent the preheating passage.Type: GrantFiled: October 21, 1985Date of Patent: April 14, 1987Assignee: Chugai Ro Co., Ltd.Inventors: Tetsuo Akiyama, Saiji Arita
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Patent number: 4561800Abstract: A method of and an apparatus for heating a road surface, in which hot air controlled to a predetermined temperature is blown against the road surface so as to heat the road surface. The apparatus includes a hot air generator provided with a burner and a thermal control unit, and a duct formed with blowing pores for blowing the hot air against the road surface.Type: GrantFiled: December 28, 1983Date of Patent: December 31, 1985Assignees: Chugai Ro Co., Ltd., Kajima Road Co., Ltd.Inventors: Toshiki Hatakenaka, Tetsuo Akiyama, Shinji Asada, Kunio Shinohara
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Patent number: 4498158Abstract: A method and apparatus for operating a data recording medium reproducing device in which a pick-up device reads address data from a recording medium such as a video disc. The read off data is compared with a supply desired address data to form a signal which represents whether the present position is inside, outside, or coincident with the desired position. A sequence controller operates in response to the output of the comparison to drive coarse and fine adjustment devices which position the pick-up device successively until the desired position or a position within the vicinity of desired position is reached.Type: GrantFiled: July 2, 1980Date of Patent: February 5, 1985Assignee: Universal Pioneer CorporationInventor: Tetsuo Akiyama