Patents by Inventor Michiyasu Takahashi
Michiyasu Takahashi 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: 7971580Abstract: Startability of an internal combustion engine using a mixed fuel of gasoline and alcohol is improved. An intake passage of the engine has a main flow channel provided with a throttle valve and a bypass flow channel for bypassing the throttle valve. A bypass quantity adjusting mechanism adjusts the bypass quantity in the bypass flow channel. A control device detects or estimates the mixing ratio of alcohol of the fuel and controls the bypass quantity adjusting mechanism so that a bypass quantity before a first explosion is smaller than a bypass quantity after the first explosion when the mixing ratio of alcohol is equal to or more than a predetermined value.Type: GrantFiled: September 16, 2008Date of Patent: July 5, 2011Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Michihisa Nakamura, Michiyasu Takahashi
-
Publication number: 20090239738Abstract: Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXn or MOXn (wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.Type: ApplicationFiled: February 13, 2009Publication date: September 24, 2009Applicants: SUMITOMO METAL INDUSTRIES, LTD., OSAKA TITANIUM TECHNOLOGIES CO., LTD.Inventors: Katsumi Okada, Katsuhiro Nishihara, Yasuhiro Masaki, Haruhiko Kajimura, Michiyasu Takahashi, Tadashi Yao, Tadashi Ogasawara, Munetoshi Watanabe, Shiji Shimosaki, Kouji Oda, Sadanobu Nagaoka
-
Patent number: 7521133Abstract: Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXn or MOXn (wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.Type: GrantFiled: March 20, 2003Date of Patent: April 21, 2009Assignees: Osaka Titanium Technologies Co., Ltd., Sumitomo Metal Industries, Ltd.Inventors: Katsumi Okada, Katsuhiro Nishihara, Yasuhiro Masaki, Haruhiko Kajimura, Michiyasu Takahashi, Tadashi Yao, Tadashi Ogasawara, Munetoshi Watanabe, Shiji Shimosaki, Kouji Oda, Sadanobu Nagaoka
-
Publication number: 20090076706Abstract: Startability of an internal combustion engine using a mixed fuel of gasoline and alcohol is improved. An intake passage of the engine has a main flow channel provided with a throttle valve and a bypass flow channel for bypassing the throttle valve. A bypass quantity adjusting mechanism adjusts the bypass quantity in the bypass flow channel. A control device detects or estimates the mixing ratio of alcohol of the fuel and controls the bypass quantity adjusting mechanism so that a bypass quantity before a first explosion is smaller than a bypass quantity after the first explosion when the mixing ratio of alcohol is equal to or more than a predetermined value.Type: ApplicationFiled: September 16, 2008Publication date: March 19, 2009Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Michihisa NAKAMURA, Michiyasu TAKAHASHI
-
Patent number: 7017548Abstract: An unstable idling state immediately after engine start is stabilized. The difference between a target idling engine speed corresponding to the cooling water temperature and an actual engine speed is integrated. The ignition timing is changed toward advance or retard while using a value obtained by multiplying the integration value of the engine speed difference with a gain, as an ignition timing changing amount. Immediately after engine start, the gain is made relatively large to rapidly increase engine speed. When the engine speed approaches the target engine speed, the gain is set to a smaller usual gain, and, in a change to the same advancing or retarding side, a change to an ignition timing in the same side is suppressed using a smaller advancing or retarding gain. In a throttle-off state, an ignition timing corresponding to the cooling water temperature is set to rapidly reduce engine speed.Type: GrantFiled: December 2, 2002Date of Patent: March 28, 2006Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Yuichiro Sawada, Hitoshi Hasegawa, Michiyasu Takahashi
-
Patent number: 6983646Abstract: The atmospheric pressure is detected accurately without using an atmospheric pressure sensor. The atmospheric pressure is obtained from an intake air pressure just before an inlet valve opens by detecting an intake air pressure. Since the intake air pressure just before the inlet valve opens becomes unstable when the engine load is large, the atmospheric pressure is calculated from an intake air pressure just before the inlet valve opens when the engine load is small. In addition, since the intake air pressure just before the inlet valve opens depending upon engine rotational speeds, the atmospheric pressure is calculated from an intake air pressure just before the inlet valve opens when the engine rotational speed resides in a predetermined rotational speed area.Type: GrantFiled: October 22, 2002Date of Patent: January 10, 2006Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Yuichiro Sawada, Michiyasu Takahashi
-
Publication number: 20050227008Abstract: Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXn or MOXn (wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.Type: ApplicationFiled: March 20, 2003Publication date: October 13, 2005Inventors: Katsumi Okada, Katsuhiro Nishihara, Yasuhiro Masaki, Haruhiko Kajimura, Michiyasu Takahashi, Tadashi Yao, Tadashi Ogasawara, Munetoshi Watanabe, Shiji Shimosaki, Kouji Oda, Sadanobu Nagaoka
-
Patent number: 6932057Abstract: To permit reliable occurrence of initial combustion at the start of an engine during which a stroke is not determined by only a crank pulse and to increase an engine speed. During a period from when cranking is started until a stroke is detected, fuel is injected once every rotation of a crankshaft before an intake stroke (or an expansion stroke), and ignition is effected once every rotation of the crankshaft in the vicinity of the top dead center, thereby enabling initial combustion without involvement of reverse rotation of the engine. If a stroke is detected, fuel injection and ignition are effected once per cycle. When the engine speed fails to become equal to or higher than a predetermined speed, the ignition timing is set to a point before the compression dead center and in the vicinity of 10° toward advance, thereby immediately increasing the engine speed.Type: GrantFiled: October 22, 2002Date of Patent: August 23, 2005Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Yuichiro Sawada, Hitoshi Hasegawa, Michiyasu Takahashi
-
Patent number: 6845313Abstract: There is provided an engine start control method and an engine start control apparatus which can judge cell starting and kick starting with a simple constitution to perform optimum engine start according the respective starting. The engine start control method and the engine start control apparatus have a cell starting program at the time when an engine is started by a cell motor and a human power starting program at the time when the engine is started by a human power, detect a difference between a battery voltage at the time of engine stop and a battery voltage at the time of commencement of engine start, and starts the engine in accordance with the cell starting program if this difference is larger than a predetermined value and starts the engine in accordance with the human power starting program if the difference is smaller than the predetermined value.Type: GrantFiled: October 22, 2002Date of Patent: January 18, 2005Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Hitoshi Hasegawa, Yuuichirou Sawada, Michiyasu Takahashi
-
Patent number: 6840236Abstract: To accurately detect occurrence of erroneous detection of a crank pulse associated with dropout of a crank pulse or occurrence of noise. A cogless section is provided in cogs provided on an outer periphery of a crankshaft for transmitting a crank pulse. Occurrence of erroneous detection of a crank pulse is detected through use of an instantaneous rotational speed of the crankshaft computed from a crank pulse assigned to the cogless section and crank pulses assigned to cogs before and after the cogless section. When too few crank pulses are detected, a rapid increases arises in the instantaneous rotational speed of the crankshaft computed from the crank pulses after occurrence of a rapid decrease. The number of detected cramp pulses—which are fewer than the original crank pulses—is detected from the number of crank pulses existing between occurrence of a rapid decrease and occurrence of a rapid increase.Type: GrantFiled: October 22, 2002Date of Patent: January 11, 2005Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Michiyasu Takahashi, Hitoshi Hasegawa, Yuichiro Sawada
-
Publication number: 20040261767Abstract: To permit reliable occurrence of initial combustion at the start of an engine during which a stroke is not determined by only a crank pulse and to increase an engine speed.Type: ApplicationFiled: April 23, 2004Publication date: December 30, 2004Inventors: Yuichiro Sawada, Hitoshi Hasegawa, Michiyasu Takahashi
-
Publication number: 20040255902Abstract: An unstable idling state immediately after engine start is stabilized.Type: ApplicationFiled: May 28, 2004Publication date: December 23, 2004Inventors: Yuichiro Sawada, Hitoshi Hasegawa, Michiyasu Takahashi
-
Publication number: 20040254714Abstract: To accurately detect occurrence of erroneous detection of a crank pulse associated with dropout of a crank pulse or occurrence of noise.Type: ApplicationFiled: April 21, 2004Publication date: December 16, 2004Inventors: Michiyasu Takahashi, Hitoshi Hasegawa, Yuichiro Sawada
-
Publication number: 20040244471Abstract: The atmospheric pressure is detected accurately without using an atmospheric pressure sensor.Type: ApplicationFiled: April 26, 2004Publication date: December 9, 2004Inventors: Yuichirou Sawada, Michiyasu Takahashi
-
Patent number: 6335458Abstract: The object of the present invention is to provide novel compounds corresponding to the A ring part of vitamin D derivatives having a substituent at the 2-position. According to the present invention, there are provided compounds of the general formula (1): (wherein R1, R2 and R3, which may be the same or different, represent a hydrogen atom or a protecting group and R4 represents a lower alkyl group), intermediates for synthesizing them and a process for preparing them.Type: GrantFiled: August 28, 2000Date of Patent: January 1, 2002Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Kunio Ogasawara, Michiyasu Takahashi