Patents by Inventor Hiroyuki Aizawa
Hiroyuki Aizawa 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).
-
Publication number: 20070120449Abstract: Provided is an angular velocity sensor which is thin, requires no individual adjustment and can control the generation of signals that are unnecessary to the angular velocity sensor and are generated on the sensing electrodes when the tuning fork is made to vibrate in the X-axis direction, and a method for manufacturing the angular velocity sensor. Centers (8d) and (9d) of top electrodes (8c) and (9c) as components of detection units are shifted by ?W from centers (10) and (11) of main surfaces (3a) and (3b) of arms (1a) and (1b) of the tuning fork vibrator towards side surfaces (3c) and (3e) adjacent to main surfaces (3a) and (3b), respectively.Type: ApplicationFiled: June 30, 2005Publication date: May 31, 2007Inventors: Hiroyuki Aizawa, Satoshi Ohuchi, Takeshi Yamamoto
-
Patent number: 7184293Abstract: A crosspoint-type ferroelectric memory is provided. In the crosspoint-type ferroelectric memory, a first memory cell array and a second memory cell array are stacked with a first interlayer insulating layer and a second interlayer insulating layer therebetween. The first memory cell array includes lower electrodes formed in stripes, upper electrodes formed in stripes in a direction that crosses the lower electrodes, ferroelectric capacitors that are disposed at least at intersecting parts of the lower electrodes and the upper electrodes, and an embedded insulating layer formed between the ferroelectric capacitors. The interlayer insulating layer includes a conductive layer between a first insulating layer and a second insulating layer.Type: GrantFiled: October 27, 2004Date of Patent: February 27, 2007Assignee: Seiko Epson CorporationInventors: Kazumasa Hasegawa, Hiroyuki Aizawa
-
Publication number: 20060272412Abstract: Provided are an angular velocity sensor with improved reliability by preventing an electric short circuit resulting from etching debris left on the bottom electrode after the etching of the conductive layers, and a method for manufacturing the angular velocity sensor. The drive electrode unit, the monitor electrode unit and the sensing electrode unit are each provided with bottom electrode (29) formed on substrate (33) having the shape of a tuning fork, piezoelectric film (30) made of piezoelectric material and formed on bottom electrode (29), and top electrode (31) formed on piezoelectric film (30). Ends (31T) of top electrode (31) are located inside ends (30T) of piezoelectric film (30) so as to expose ends (30T) of piezoelectric film (30) beyond top electrode (31), thereby forming exposed parts (32). When exposed parts (32) have a thickness of âtâ, piezoelectric film (30) is made to have an exposed width (L) of not less than 0.3 t.Type: ApplicationFiled: June 23, 2005Publication date: December 7, 2006Applicant: ATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Satoshi Ohuchi, Hiroyuki Aizawa, Toshiyuki Nozoe
-
Publication number: 20060150733Abstract: An angular velocity sensor includes a tuning fork vibrator, a drive unit provided on the tuning folk vibrator, and a detection unit for detecting an amount of deflection of the tuning folk vibrator. The tuning fork vibrator includes a first vibrating arm having a first end and a second end and having a fundamental vibration frequency, a second vibrating arm having a first end and a second end and having the fundamental vibration frequency, and a coupling portion for coupling the first end of the first vibrating arm to the first end of the second vibrating arm. The drive unit is provided on the first vibrating arm and causes the first vibrating arm to vibrate. The drive unit has a driving resistance. The detection unit is provided on one of the first vibrating arm and the second vibrating arm, and detects an amount of deflection of the one of the first vibrating arm and the second vibrating arm when deflecting due to an angular velocity applied to the tuning fork vibrator.Type: ApplicationFiled: February 1, 2005Publication date: July 13, 2006Inventors: Satoshi Ohuchi, Hiroyuki Aizawa
-
Publication number: 20060090565Abstract: An angular velocity sensor is provided with an oscillator including a pair of drive arms, a base portion coupled to one end of each drive arm, and a flexible arm extending from the base portion in a direction opposite from the drive arms. This angular velocity sensor is also provided with driving member which oscillates the pair of drive arms in approaching or separating direction, and distortion detecting member which detects a distortion of the flexible arm in the oscillating direction of the drive arms.Type: ApplicationFiled: November 1, 2005Publication date: May 4, 2006Inventors: Satoshi Ohuchi, Toshiyuki Nozoe, Hiroyuki Aizawa
-
Publication number: 20050117431Abstract: A crosspoint-type ferroelectric memory is provided. In the crosspoint-type ferroelectric memory, a first memory cell array and a second memory cell array are stacked with a first interlayer insulating layer and a second interlayer insulating layer therebetween. The first memory cell array includes lower electrodes formed in stripes, upper electrodes formed in stripes in a direction that crosses the lower electrodes, ferroelectric capacitors that are disposed at least at intersecting parts of the lower electrodes and the upper electrodes, and an embedded insulating layer formed between the ferroelectric capacitors. The interlayer insulating layer includes a conductive layer between a first insulating layer and a second insulating layer.Type: ApplicationFiled: October 27, 2004Publication date: June 2, 2005Inventors: Kazumasa Hasegawa, Hiroyuki Aizawa
-
Patent number: 6816771Abstract: An intake air control system for an internal combustion engine is provided which comprises an intake throttle valve that controls an intake air quantity of air flowing into the engine, an EGR valve that controls a quantity of exhaust gas recirculated back to a portion of an intake system of the engine downstream of the intake throttle valve, and a control unit that controls the intake throttle valve and the EGR valve in accordance with an operating condition of the engine. The control unit includes a target opening area calculating section that calculates a target opening area of the intake throttle valve based on a target EGR ratio corresponding to the operating condition of the engine, and a control section that controls an opening degree of the intake throttle valve based on the target opening area. An intake air control method is also provided.Type: GrantFiled: March 21, 2003Date of Patent: November 9, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Manabu Miura, Hiroyuki Aizawa, Takashi Shirakawa
-
Publication number: 20040043187Abstract: The laminated structure comprises a lightweight and shape-retaining foamed resin base member, an outer circumference frame integrally laminated on the reverse side of the formed resin base member along the outer circumference of an article, and bridging ribs connecting between respective points on the outer circumference frame. Accordingly, the present invention provides a lightweight laminated structure with low cost by reducing the amount of the resin used, since the molded synthetic resin comprising the outer circumference frame and bridging ribs has a small projection area.Type: ApplicationFiled: August 28, 2002Publication date: March 4, 2004Inventors: Tetsuyuki Ota, Masahiko Hara, Tatsushi Ohno, Hiroyuki Aizawa, Kiyohiko Obara
-
Publication number: 20030188712Abstract: An intake air control system for an internal combustion engine is provided which comprises an intake throttle valve that controls an intake air quantity of air flowing into the engine, an EGR valve that controls a quantity of exhaust gas recirculated back to a portion of an intake system of the engine downstream of the intake throttle valve, and a control unit that controls the intake throttle valve and the EGR valve in accordance with an operating condition of the engine. The control unit includes a target opening area calculating section that calculates a target opening area of the intake throttle valve based on a target EGR ratio corresponding to the operating condition of the engine, and a control section that controls an opening degree of the intake throttle valve based on the target opening area. An intake air control method is also provided.Type: ApplicationFiled: March 21, 2003Publication date: October 9, 2003Applicant: NISSAN MOTOR CO., LTD.Inventors: Manabu Miura, Hiroyuki Aizawa, Takashi Shirakawa
-
Patent number: 6380302Abstract: The present invention provides a surfactant composition for emulsion polymerization. The surfactant composition for emulsion polymerization comprises a compound (a) represented by the formula (I) and having a critical micelle concentration (CMC) in the range of from not less than 0.007 mol L−1 to not more than 0.1 mol L−1 and a compound (b) represented by the formula (II) and having a CMC in the range of from not less than 1×10−5 mol L−1 to less than 0.007 mol L−1, as essential components, and the molar ratio of the components (a) to (b) in terms of (a)/(b) is from 5/95 to 75/25: R1O—(A1O)m—SO3M1 (I) R2O—(A2O)n—SO3M2 (II) (in the formulae, R1 and R2 are monovalent aliphatic hydrocarbon groups; A1 and A2 are alkylene groups having 2 to 4 carbons; m and n are numbers from 1 to 50; and M1 and M2 are monovalent cations).Type: GrantFiled: February 28, 2000Date of Patent: April 30, 2002Assignee: Kao CorporationInventors: Takayuki Ikenaga, Atsuhito Mori, Hiroyuki Aizawa, Hiroki Sawada, Yasuo Ishii, Yoshinori Mitsuda
-
Patent number: 6298299Abstract: At least an engine speed, an opening of an accelerator and an amount of an intake air are detected as an engine operating condition. A standard volume for injecting fuel oil is calculated on the basis of at least the engine speed and the opening of the accelerator. A target injection timing of fuel is set on the basis of the engine speed and the standard volume for injecting fuel oil. An actual fuel injection timing is detected. A standard target EGR rate is calculated on the basis of the engine speed, the amount of the intake air and the standard volume for injecting fuel oil. An amount of adjustment of a target EGR rate is calculated on the basis of the standard volume for injecting fuel oil, the target fuel injection timing and the actual fuel injection timing. A final target EGR rate is set on the basis of the standard target EGR rate and the amount of adjustment. An EGR is controlled on the basis of the final target EGR rate.Type: GrantFiled: October 31, 2000Date of Patent: October 2, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Hiroyuki Itoyama, Hiroyuki Aizawa
-
Patent number: 6214114Abstract: A coating apparatus includes: a conveyor for conveying an object to be coated; and a coater for coating a coating liquid by jetting the coating liquid from a slit in a film shape and by causing the coating liquid to collide with the object to be coated. The coater is not in contact with the object to be coated, and a clearance of a slit exit d (m) of the coater satisfies a relation of 0<d≦5×10−5 (m). The clearance of the slit exit of the coater is smaller than a clearance of a slit inlet through which the coating liquid is injected, the slit has, on a side of the slit exit, slit side surfaces which face each other to be in parallel.Type: GrantFiled: February 13, 1998Date of Patent: April 10, 2001Assignee: Konica CorporationInventors: Shigetoshi Kawabe, Hiroyuki Aizawa, Seiichi Tobisawa
-
Patent number: 6167342Abstract: At least an engine speed, an opening of an accelerator and an amount of an intake air are detected as an engine operating condition. A standard volume for injecting fuel oil is calculated on the basis of at least the engine speed and the opening of the accelerator. A target injection timing of fuel is set on the basis of the engine speed and the standard volume for injecting fuel oil. An actual fuel injection timing is detected. A standard target EGR rate is calculated on the basis of the engine speed, the amount of the intake air and the standard volume for injecting fuel oil. An amount of adjustment of a target EGR rate is calculated on the basis of the standard volume for injecting fuel oil, the target fuel injection timing and the actual fuel injection timing. A final target EGR rate is set on the basis of the standard target EGR rate and the amount of adjustment. An EGR is controlled on the basis of the final target EGR rate.Type: GrantFiled: October 26, 1999Date of Patent: December 26, 2000Assignee: Nissan Motor Co., Ltd.Inventors: Hiroyuki Itoyama, Hiroyuki Aizawa
-
Patent number: 6012431Abstract: At least an engine speed, an opening of an accelerator and an amount of an intake air are detected as an engine operating condition. A standard volume for injecting fuel oil is calculated on the basis of at least the engine speed and the opening of the accelerator. A target injection timing of fuel is set on the basis of the engine speed and the standard volume for injecting fuel oil. An actual fuel injection timing is detected. A standard target EGR rate is calculated on the basis of the engine speed, the amount of the intake air and the standard volume for injecting fuel oil. An amount of adjustment of a target EGR rate is calculated on the basis of the standard volume for injecting fuel oil, the target fuel injection timing and the actual fuel injection timing. A final target EGR rate is set on the basis of the standard target EGR rate and the amount of adjustment. An EGR is controlled on the basis of the final target EGR rate.Type: GrantFiled: June 3, 1997Date of Patent: January 11, 2000Assignee: Nissan Motor Co., Ltd.Inventors: Hiroyuki Itoyama, Hiroyuki Aizawa
-
Patent number: 5547510Abstract: An coating apparatus comprises at least two coating bars along which a support member is conveyed in a running direction, wherein a center line mean roughness (Ra) on the edge at the downstream side of the downstream bar is not larger than 0.5 .mu.m and the maximum height (Rmax) on the edge is not larger than 6.0 .mu.m.Type: GrantFiled: April 1, 1994Date of Patent: August 20, 1996Assignee: Konica CorporationInventors: Hiroyuki Aizawa, Seiichi Tobisawa
-
Patent number: 4754293Abstract: An image forming apparatus employing a face-down delivery system in which the plane of the recording medium at any position relative to any other position assumed by the recording medium beginning with a stacking tray and ending with a delivery tray does not exceed 90.degree.. The apparatus includes a detachable cartridge which includes a photosensitive member, a charging device and a cleaning device. In one preferred embodiment, register rollers and fixing rollers are positioned relative to each other such that a substantially zero angular deviation exists in the path traveled by the recording medium between these two pairs of rollers.Type: GrantFiled: April 2, 1987Date of Patent: June 28, 1988Assignee: Seiko Epson CorporationInventors: Hiroyuki Aizawa, Mitsuaki Maruyama, Shigeru Sawada, Yasuhiro Gyoutoku, Hiroshi Niki, Kouichi Higashimura, Kenji Aoki
-
Patent number: RE34948Abstract: An image forming apparatus employing a face-down delivery system in which the plane of the recording medium at any position relative to any other position assumed by the recording medium beginning with a stacking tray and ending with a delivery tray does not exceed 90.degree.. The apparatus includes a detachable cartridge which includes a photosensitive member, a charging device and a cleaning device. In one preferred embodiment, register rollers and fixing rollers are positioned relative to each other such that a substantially zero angular deviation exists in the path traveled by the recording medium between these two pairs of rollers.Type: GrantFiled: January 6, 1989Date of Patent: May 23, 1995Assignee: Seiko Epson CorporationInventors: Hiroyuki Aizawa, Mitsuaki Maruyama, Shigeru Sawada, Yasuhiro Gyoutoku, Hiroshi Niki, Kouichi Higashimura, Kenji Aoki