Patents Represented by Law Firm Sixbey, Friedman, Leedom & Ferguson, Jr.
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Patent number: 6008076Abstract: A thin film transistor and a semiconductor device and a method for forming the same. A silicon thin film formed on an insulating substrate is heated at 550 to 800.degree. C. so that it has crystallinity, and a thin film transistor is formed using the crystalline silicon film thus obtained. Thermal contraction of the insulating substrate is set in a range of 30 to 500 ppm in the heating process, so that the thin film transistor has high mobility, low threshold voltage and high off-resistance. Thermal contraction of the insulating substrate may be also set 100 ppm or less in a heating process after a patterning treatment in a thin film transistor producing process.Type: GrantFiled: November 6, 1996Date of Patent: December 28, 1999Assignee: Semicoductor Energy Laboratory Co., Ltd.Inventors: Mitsufumi Codama, Yukio Yamauchi, Naoya Sakamoto, Takeshi Fukada
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Patent number: 5970384Abstract: Silicon oxide films which are good as gate insulation films are formed by subjecting a silicon oxide film which has been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700.degree. C. in a dinitrogen monoxide atmosphere, or in an NH.sub.3 or N.sub.2 H.sub.4 atmosphere, while irradiating with ultraviolet light, reducing the hydrogen and carbon contents in the silicon oxide film and introducing nitrogen into the boundary with the silicon film in particular. Furthermore, silicon oxide films which are good as gate insulating films have been formed by subjecting silicon oxide films which have been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700.degree. C. in an N.sub.2 O atmosphere (or hydrogen nitride atmosphere) while irradiating with ultraviolet light, and then carrying out a heat treatment at 300-700.degree. C. in a hydrogen nitride atmosphere (N.sub.Type: GrantFiled: August 2, 1995Date of Patent: October 19, 1999Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yasuhiko Takemura, Mitsunori Sakama, Tomohiko Sato, Satoshi Teramoto, Shigefumi Sakai
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Patent number: 5805103Abstract: A distance monitoring system of a vehicle monitors a distance to a preceding vehicle traveling directly ahead of the vehicle to determines whether the preceding vehicle is decelerating by comparing a change in the vehicle speed with a reference value which is varied according to various driving condition in relation in particular to dangers such as collisions against the preceding vehicle.Type: GrantFiled: September 24, 1996Date of Patent: September 8, 1998Assignee: Mazda Motor CorporationInventors: Ayumu Doi, Hiroki Uemura, Yasunori Yamamoto, Tomohiko Adachi, Tohru Yoshioka
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Patent number: 5778841Abstract: A high strength, lightweight camshaft for an internal combustion engine, comprising a shaft body having an axially oriented hollow interior extending a predetermined length from between a pair of spaced points, respectively, adjacent the ends of the shaft body. Plural camshaft journal bearings are spaced apart on the shaft body and include a pair of end camshaft journal bearings positioned adjacent the ends of the shaft body, respectively, with at least one inner camshaft journal bearing positioned intermediate the pair of end camshaft journal bearings. Each end camshaft journal bearing has a lubricant transfer means formed therein for receiving lubricant from an external supply and for transferring lubricant into the hollow interior of the camshaft.Type: GrantFiled: February 26, 1997Date of Patent: July 14, 1998Assignee: Cummins Engine Company, Inc.Inventors: Steven W. Reedy, Rand D. Klopfer, Randal L. Myers
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Patent number: 5468653Abstract: A photoelectric conversion device has a non-single-crystal semiconductor laminate member formed on a substrate having a conductive surface, and a conductive layer formed on the non-single-crystal semiconductor laminate member. The non-single-crystal semiconductor laminate member has such a structure that a first non-single-crystal semiconductor layer having a P or N first conductivity type, an I-type second non-single-crystal semiconductor layer and a third non-single-crystal semiconductor layer having a second conductivity type opposite the first conductivity type are laminated in this order. The first (or third) non-single-crystal semiconductor layer is disposed on the side on which light is incident, and is P-type. The I-type non-single-crystal semiconductor layer has introduced thereinto a P-type impurity, such as boron which is distributed so that its concentration decreases towards the third (or first) non-single-crystal semiconductor layer in the thickwise direction of the I-type layer.Type: GrantFiled: December 13, 1993Date of Patent: November 21, 1995Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Shunpei Yamazaki
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Patent number: 5466033Abstract: A front body structure of a vehicle capable of controlling a crashed mode of a front side frame at a collision with reduced weight. A rear frame of the front side frame has high rigidity by making the thickness thereof thicker than that of the front frame. The weight of the front body is reduced by lessening the thickness of the front frame. A crashed mode is controlled by adjusting the thickness of the front frame and the rear frame. The front and rear frames are joined by a butt joint to each other at a set angle with respect to a vertical direction of a car body, so that a joint part between both frames can be easily bent at a collision. A reinforcement and a engine mount are respectively disposed at the inside and the outside of the joint part to reinforce the joint part.Type: GrantFiled: May 12, 1993Date of Patent: November 14, 1995Assignee: Mazda Motor CorporationInventors: Tetsuya Murakami, Masahiro Osumi, Toshisuke Nakanishi, Shigeaki Watanabe
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Patent number: 5089170Abstract: A divalent europium activated barium flourohalide phosphor wherein a portion of barium is replaced with an alkali metal and a trivalent metal, having the formula:Ba .sub.1-x M.sub.x/2 L.sub.x/2 FX:yEu.sup.2+in which M is at least one alkali metal selected from the group consisting of Li, Na, K, Rb and Cs; L is at least one trivalent metal selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, In and Tl; X is a least one halogen selected from the group consisting of Cl, Br and I; and x and y are numbers satisfying the conditions of 10.sup.-2 .ltoreq.x.ltoreq.0.5 and 0<y.ltoreq.0.1, respectively.Type: GrantFiled: July 28, 1989Date of Patent: February 18, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Chiyuki Umemoto, Kenji Takahashi
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Patent number: 5085301Abstract: According to the lockup device of a fluid transmission under the present invention, at the decelerating running when the change rate of engine load exceeds a set value, a lockup control pattern is changed so that the area where the lockup device is controlled to perfect friction or to the specified friction force. By this change, at the decelerating running large engine brake force can be worked and a good feeling of deceleration can be given to a driver. In the case where fuel supply to the engine is suspended at the decelerating running of the engine, transmission of large engine brake force as mentioned above results in comparatively longer time of maintaining high engine speed and longer time of fuel supply cutting off, with consequent saving of fuel consumption. Moreover, by changing the target slip quantity to the increasing side at the accelerating running, torque increasing action at the accelerating running is displayed effectively and accelerability can be improved.Type: GrantFiled: September 26, 1990Date of Patent: February 4, 1992Assignees: Mazda Motor Corporation, Jatco CorporationInventors: Hiroyuki Imamura, Takafumi Kurata, Hiroaki Yokota, Naoyuki Noguchi
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Patent number: 5021656Abstract: A method for displaying autoradiograph having information on two-dimensional location of radioactively labeled substances resolved on a support medium, which includes the steps of:(1) obtaining digital signals corresponding to said autoradiograph and having information on the resolved positions of radioactively labeled substances and radiation intensity at said positions;(2) subjecting the digital signals to signal processing to obtain at least two-dimensional waveforms for one resolved row, which exhibit position along the resolving direction and signal level; and(3) displaying multiply the resulting two-dimensional waveforms at regular intervals in a direction perpendicualr to the resolving direction.Type: GrantFiled: June 29, 1989Date of Patent: June 4, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinichi Okano, Makoto Hara
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Patent number: 5021671Abstract: Disclosed is a radiation image storage panel having a phosphor layer comprising a stimulable phosphor and a protective film provided on the phosphor layer via an adhesive layer, wherein at least one of the protective film, the adhesive layer and the phosphor layer contains an ultraviolet light absorbing agent. Also disclosed is a radiation image storage panel having a phosphor layer comprising a stimulable phosphor and a protective layer, wherein at least one of the protective film and the phosphor layer contains an ultraviolet light absorbing agent.Type: GrantFiled: November 27, 1989Date of Patent: June 4, 1991Assignee: Fuji Photo Film Co., Ltd.Inventor: Katsuhiro Kohda
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Patent number: 4996119Abstract: A speaker cone plate is provided with an inorganic surfacial hard layer formed at least on a face of a metal substrate and is subjected to a reinforcing treatment by hot isostatic pressing, wherein the surfacial hard layer may be composed of a carbide, an oxide, a borie or a phosphide or may be formed by plasma thermal spraying of an inorganic substance containing silicon nitride whiskers or silicon carbide whiskers.Type: GrantFiled: March 17, 1989Date of Patent: February 26, 1991Assignee: Kabushiki Kaisha KenwoodInventors: Yutaka Mae, Yoichi Yaguchi, Masakatsu Sakamoto
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Patent number: 4991207Abstract: In one way address transmission system of a PCM music broadcasting, a plurality of the PCM signals are time divisionally multiplexed and then the multiplexed data is scrambled for transmission. An address code in the transmitted scrambled data is arranged so that only the contracted receiver can descramble the address code.Type: GrantFiled: March 21, 1989Date of Patent: February 5, 1991Assignee: Kabushiki Kaisha KenwoodInventors: Kenichi Shiraishi, Hirokazu Kobayashi