Patents by Inventor Hiroshi Hara
Hiroshi Hara 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: 8152299Abstract: A fundus camera includes an illumination optical system, an observation photographic optical system, a photographic diaphragm unit located in a position conjugate with the subject's eye in the observation photographic optical system, and an imaging unit disposed in the observation photographic optical system. The photographic diaphragm unit includes a first photographic diaphragm fixed during capturing of a still image and a second photographic diaphragm movable during capturing of a moving image. The fundus camera further includes a diaphragm driving unit configured to move the second photographic diaphragm on a plane orthogonal to an optical axis, an image recording unit configured to capture, with the first photographic diaphragm, a still image based on an output of the imaging unit and, with the second photographic diaphragm, a moving image based on an output of the imaging unit, and a display unit configured to display an image captured by the imaging unit.Type: GrantFiled: July 6, 2010Date of Patent: April 10, 2012Assignee: Canon Kabushiki KaishaInventor: Hiroshi Hara
-
Publication number: 20120058337Abstract: An object of the present invention is to provide a pitch carbon fiber having a decreased occurrence of cracking along the direction of the fiber axis of the pitch carbon fiber, which has conventionally occurred in a melt blowing method, and having high thermal conductivity. The invention is directed to a pitch carbon fiber having a melt mark recognized in the fiber corresponding to 60 to less than 100% of the cross-section of the fiber, and having a lattice spacing (d 002 value) of 0.3362 nm or less in the graphite layer and a crystallite size (Lc) of 60 nm or more derived from the thicknesswise direction, as determined by X-ray diffractometry. The pitch carbon fiber can be produced under specific conditions for spinning and infusibilization.Type: ApplicationFiled: December 17, 2009Publication date: March 8, 2012Applicant: TEIJIN LIMITEDInventors: Hiroshi Sakurai, Hiroshi Hara, Shoichi Takagi
-
Publication number: 20120050515Abstract: A fundus camera, having a first light source for observing an object, a second light source for photographing the object and an image pickup element, determines a light intensity of the second light source based on first image data obtained by illuminating an eye to be examined through the first light source and by forming an image on the image pickup element using light reflected from the eye to be examined. A computer analyzes second image data obtained by illuminating the eye to be examined through the second light source with the light intensity determined by the fundus camera and by forming an image on the image pickup element using light reflected from the eye to be examined. The computer controls brightness correction processing of the second image data based on the analysis result and information relating to a time of photographing the second image data.Type: ApplicationFiled: August 12, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Masao Shikaumi, Hiroshi Hara
-
Publication number: 20120032740Abstract: An amplifier for receiving an optical signal is disclosed. The amplifier provides a response time controller including an integrator with two time constants, a linear amplifier, a hysteresis comparator, an another integrator, and a switch to change the time constant. The switch includes two voltage followers, one of which turns off the switch to set the time constant in a longer state; while, the other of which turns on the switch and reflects the input of the integrator to set the time constant in a shorter state.Type: ApplicationFiled: September 8, 2011Publication date: February 9, 2012Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hiroshi Hara, Sosaku Sawada
-
Publication number: 20110316622Abstract: An electronic circuit includes an amplifier that amplifies an input signal, a control circuit configured to generate a control signal by averaging an output signal of the amplifier based on a time constant, a first time constant control circuit configured to generate a first time constant control signal based on the control signal, the first time constant control signal changing the time constant of the control circuit to a second time constant from a first time constant smaller than the second time constant, a second time constant control circuit configured to generate a second time constant control signal by averaging the output signal of the amplifier based on a third time constant between the first time constant and the second time constant, the second time constant control signal changing the time constant of the control circuit to the first time constant from the second time constant, and a bypass circuit bypassing the input signal of the amplifier based on the control signal.Type: ApplicationFiled: June 23, 2011Publication date: December 29, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventor: Hiroshi Hara
-
Publication number: 20110284795Abstract: Pitch-based graphitized short fibers formed from mesophase pitch as a raw material, having an average fiber diameter of 5 to 20 ?m, a percentage (CV value) of a variance of a fiber diameter with respect to the average fiber diameter of 8 to 15%, a number average fiber length of 20 to 500 ?m, and a crystallite size (La) derived from a growth direction of a hexagonal net plane of 30 nm or more, having graphene sheets that are closed upon observation of an end surface of a filler with a transmission electron microscope, and a substantially flat surface observed with a scanning electron microscope, and having an R value, which is a relative intensity ratio (ID/IG) of an intensity (ID) of a Raman band in the vicinity of 1,360 cm?1 to an intensity (IG) of a Raman band in the vicinity of 1,580 cm?1 measured by laser Raman spectroscopy, in a range of 0.01 to 0.07. The short fibers can be filled in a rubber composition at a high density without inhibition of curing of the rubber composition.Type: ApplicationFiled: January 27, 2010Publication date: November 24, 2011Applicant: TEIJIN LIMITEDInventors: Hiroshi Sakurai, Hiroki Sano, Hiroshi Hara, Shoichi Takagi
-
Patent number: 8054136Abstract: An electronic circuit includes a transimpedance amplifier, a bypass circuit that allows a part of an input signal to be applied to the transimpedance amplifier to flow through the bypass circuit so as to bypass the transimpedance amplifier on the basis of a control signal, and a control signal circuit that includes a hold circuit having a time constant that is variable on the basis of a time constant control signal and generates the control signal.Type: GrantFiled: March 11, 2010Date of Patent: November 8, 2011Assignee: Sumitomo Electric Device Innovations, Inc.Inventor: Hiroshi Hara
-
Patent number: 8017674Abstract: The invention provides a heat-conductive adhesive with high heat spread properties and excellent handleability. A pitch-based carbon fiber filler with high thermal conductivity and a smooth surface is combined with an adhesive resin to produce a heat-conductive adhesive with controlled viscosity and excellent handleability.Type: GrantFiled: July 27, 2007Date of Patent: September 13, 2011Assignee: Teijin LimitedInventors: Hiroki Sano, Hiroshi Hara, Tatsuichiro Kon
-
Patent number: 7972684Abstract: A transparent conductive laminated body (1) contains a polymer film having a metallic compound layer and a transparent conductive layer laminated sequentially on at least one surface thereof, (2) the metallic compound layer is in contact with the transparent conductive layer, and (3) the metallic compound layer has a thickness of 0.5 nm or more and less than 10.0 nm.Type: GrantFiled: August 18, 2005Date of Patent: July 5, 2011Assignee: Teijin LimitedInventors: Hiroshi Hara, Haruhiko Itoh, Isao Shiroishi, Hitoshi Mikoshiba
-
Publication number: 20110159767Abstract: A nonwoven fabric which contains pitch-based carbon fibers having a high elongation and a high elastic modulus which are not attained in the prior art and is obtained by improving the tensile elongation of carbon fibers derived from mesophase pitch, a felt obtained from the nonwoven fabric, and production processes therefore. The nonwoven fabric contains pitch-based carbon fibers, wherein the pitch-based carbon fibers have (i) an average fiber diameter (D1) measured by an optical microscope of more than 2 ?m and 20 ?m or less, (ii) a percentage of the degree of fiber diameter distribution (S1) to average fiber diameter (D1) measured by an optical microscope of 3 to 20%, (iii) a tensile elastic modulus of 80 to 300 GPa and (iv) a tensile elongation of 1.4 to 2.5%.Type: ApplicationFiled: December 2, 2010Publication date: June 30, 2011Applicant: TEIJIN LIMITEDInventors: Hiroshi SAKURAI, Hiroshi HARA, Hiroki SANO, Shuhei ONOUE, Yukio NAKAMOTO, Yoshio OSAWA, Shoichi TAKAGI
-
Patent number: 7947362Abstract: A carbon fiber composite sheet obtained by combining a carbon fiber aggregate with a thermosetting resin component selected from the group consisting of thermosetting silicone-based gel components, thermosetting epoxy resin components and thermosetting silicone resin components, and then curing the thermosetting resin component, the carbon fiber composite sheet having crystallite sizes of at least 5 nm in the direction of growth of the hexagonal mesh surface of the carbon fibers composing the carbon fiber aggregate, and the carbon fiber composite sheet having a thermal conductivity of at least 2 W/(m·K).Type: GrantFiled: April 26, 2007Date of Patent: May 24, 2011Assignee: Teijin LimitedInventors: Hiroshi Hara, Masumi Hirata, Hiroki Sano, Shoichi Takagi
-
Publication number: 20110046046Abstract: Disclosed is a safe and non-toxic prophylactic or therapeutic composition for diabetes or obesity. The prophylactic or therapeutic composition for diabetes or obesity comprises as an active ingredient, a calcium receptor activator such as ?-Glu-X-Gly, wherein X represents an amino acid or an amino acid derivative; ?-Glu-Val-Y, wherein Y represents an amino acid or an amino acid derivative; ?-Glu-Ala; ?-Glu-Gly; ?-Glu-Cys; ?-Glu-Met; ?-Glu-Thr; ?-Glu-Val; ?-Glu-Orn; Asp-Gly; Cys-Gly; Cys-Met; Glu-Cys; Gly-Cys; Leu-Asp; ?-Glu-Met(O); ?-Glu-?-Glu-Val; ?-Glu-Val-NH2; ?-Glu-Val-ol; ?-Glu-Ser; ?-Glu-Tau; ?-Glu-Cys(S-Me)(O); ?-Glu-Leu; ?-Glu-Ile; ?-Glu-t-Leu; ?-Glu-Cys(S-Me); cinacalcet; a cinacalcet analogue compound and protamine.Type: ApplicationFiled: August 24, 2010Publication date: February 24, 2011Inventors: Hiroshi HARA, Tohru HIRA, Yuzuro ETO
-
Publication number: 20110007273Abstract: A fundus camera includes an illumination optical system, an observation photographic optical system, a photographic diaphragm unit located in a position conjugate with the subject's eye in the observation photographic optical system, and an imaging unit disposed in the observation photographic optical system. The photographic diaphragm unit includes a first photographic diaphragm fixed during capturing of a still image and a second photographic diaphragm movable during capturing of a moving image. The fundus camera further includes a diaphragm driving unit configured to move the second photographic diaphragm on a plane orthogonal to an optical axis, an image recording unit configured to capture, with the first photographic diaphragm, a still image based on an output of the imaging unit and, with the second photographic diaphragm, a moving image based on an output of the imaging unit, and a display unit configured to display an image captured by the imaging unit.Type: ApplicationFiled: July 6, 2010Publication date: January 13, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Hiroshi Hara
-
Patent number: 7846543Abstract: An object of the present invention is to provide carbon fibers which have a high conductivity, readily form a network in a matrix and are suitable for use in a radiating member as well as a molded product thereof. The present invention is pitch-based carbon fibers which are obtained from mesophase pitch and have an average fiber diameter (AD) of 5 to 20 ?m, a ratio (CVAD value) of the degree of filament diameter distribution to average fiber diameter (AD) of 5 to 15, a number average fiber length (NAL) of 25 to 500 ?m, a volume average fiber length (VAL) of 55 to 750 ?m and a value obtained by dividing the volume average fiber length (VAL) by the number average fiber length (NAL) of 1.02 to 1.50, and a manufacturing method and molded product thereof.Type: GrantFiled: March 4, 2008Date of Patent: December 7, 2010Assignee: Teijin LimitedInventors: Hiroki Sano, Hiroshi Hara
-
Publication number: 20100231295Abstract: An electronic circuit includes a transimpedance amplifier, a bypass circuit that allows a part of an input signal to be applied to the transimpedance amplifier to flow through the bypass circuit so as to bypass the transimpedance amplifier on the basis of a control signal, and a control signal circuit that includes a hold circuit having a time constant that is variable on the basis of a time constant control signal and generates the control signal.Type: ApplicationFiled: March 11, 2010Publication date: September 16, 2010Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventor: Hiroshi Hara
-
Patent number: 7767302Abstract: To provide a carbon fiber reinforcement having excellent thermal conductivity and mechanical properties which is manufactured by mixing together two different types of pitch-based carbon short fibers having a ratio of the degree of filament diameter distribution to average fiber diameter of 0.05 to 0.2 and a fiber length of 20 to 6,000 ?m which differ from each other in average fiber diameter or by mixing one of them with a pitch-based carbon fiber web to improve dispersibility into a matrix resin or increase the dispersion ratio of the pitch-based carbon short fibers.Type: GrantFiled: November 20, 2009Date of Patent: August 3, 2010Assignee: Teijin LimitedInventors: Masumi Hirata, Hiroshi Hara, Tetsuo Ban
-
Patent number: 7755434Abstract: An electronic circuit includes a differential amplifier circuit, a first smoothing circuit, a second smoothing circuit and a first switch. The differential amplifier circuit receives a digital input signal and a reference signal. The first smoothing circuit smoothes the digital input signal with a first capacitance value. The second smoothing circuit smoothes the digital input signal with a second capacitance value larger than the first capacitance value. The first switch selects one of output signals from the first smoothing circuit and the second smoothing circuit as the reference signal.Type: GrantFiled: July 3, 2008Date of Patent: July 13, 2010Assignee: Eudyna Devices Inc.Inventors: Hiroshi Hara, Sosaku Sawada
-
Patent number: 7748575Abstract: A screw type material feeding apparatus in which a screw rotary driving axis with a spiral material supply blade is rotatably contained in a material feeding tube. The apparatus comprises a material divider with plural vanes provided at the distal end of the rotary driving axis, the plural vanes radially project from the screw rotary driving axis.Type: GrantFiled: September 27, 2005Date of Patent: July 6, 2010Assignee: Kabushikikaisha Matsui SeisakushoInventors: Kazunari Hanaoka, Takayuki Okuda, Hiroshi Hara
-
Publication number: 20100165166Abstract: The present invention has as an object to provide a solid-state imaging device which makes possible mixing pixels without causing quality deterioration, such as non-uniformity of an image.Type: ApplicationFiled: May 28, 2008Publication date: July 1, 2010Applicant: PANASONIC CORPORATIONInventors: Hiroshi Hara, Yoshiaki Kato
-
Publication number: 20100104846Abstract: An object of the present invention is to provide carbon fibers which have a high conductivity, readily form a network in a matrix and are suitable for use in a radiating member as well as a molded product thereof. The present invention is pitch-based carbon fibers which are obtained from mesophase pitch and have an average fiber diameter (AD) of 5 to 20 ?m, a ratio (CVAD value) of the degree of filament diameter distribution to average fiber diameter (AD) of 5 to 15, a number average fiber length (NAL) of 25 to 500 ?m, a volume average fiber length (VAL) of 55 to 750 ?m and a value obtained by dividing the volume average fiber length (VAL) by the number average fiber length (NAL) of 1.02 to 1.50, and a manufacturing method and molded product thereof.Type: ApplicationFiled: March 4, 2008Publication date: April 29, 2010Applicant: TEIJIN LIMITEDInventors: Hiroki Sano, Hiroshi Hara