Patents Represented by Law Firm Sixbey, Friedman, Leedom & Ferguson, Jr.
  • Patent number: 6008076
    Abstract: 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: Grant
    Filed: November 6, 1996
    Date of Patent: December 28, 1999
    Assignee: Semicoductor Energy Laboratory Co., Ltd.
    Inventors: Mitsufumi Codama, Yukio Yamauchi, Naoya Sakamoto, Takeshi Fukada
  • Patent number: 5970384
    Abstract: 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: Grant
    Filed: August 2, 1995
    Date of Patent: October 19, 1999
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yasuhiko Takemura, Mitsunori Sakama, Tomohiko Sato, Satoshi Teramoto, Shigefumi Sakai
  • Patent number: 5805103
    Abstract: 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: Grant
    Filed: September 24, 1996
    Date of Patent: September 8, 1998
    Assignee: Mazda Motor Corporation
    Inventors: Ayumu Doi, Hiroki Uemura, Yasunori Yamamoto, Tomohiko Adachi, Tohru Yoshioka
  • Patent number: 5778841
    Abstract: 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: Grant
    Filed: February 26, 1997
    Date of Patent: July 14, 1998
    Assignee: Cummins Engine Company, Inc.
    Inventors: Steven W. Reedy, Rand D. Klopfer, Randal L. Myers
  • Patent number: 5468653
    Abstract: 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: Grant
    Filed: December 13, 1993
    Date of Patent: November 21, 1995
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 5466033
    Abstract: 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: Grant
    Filed: May 12, 1993
    Date of Patent: November 14, 1995
    Assignee: Mazda Motor Corporation
    Inventors: Tetsuya Murakami, Masahiro Osumi, Toshisuke Nakanishi, Shigeaki Watanabe
  • Patent number: 5089170
    Abstract: 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: Grant
    Filed: July 28, 1989
    Date of Patent: February 18, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Chiyuki Umemoto, Kenji Takahashi
  • Patent number: 5085301
    Abstract: 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: Grant
    Filed: September 26, 1990
    Date of Patent: February 4, 1992
    Assignees: Mazda Motor Corporation, Jatco Corporation
    Inventors: Hiroyuki Imamura, Takafumi Kurata, Hiroaki Yokota, Naoyuki Noguchi
  • Patent number: 5021656
    Abstract: 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: Grant
    Filed: June 29, 1989
    Date of Patent: June 4, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinichi Okano, Makoto Hara
  • Patent number: 5021671
    Abstract: 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: Grant
    Filed: November 27, 1989
    Date of Patent: June 4, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Katsuhiro Kohda
  • Patent number: 4996119
    Abstract: 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: Grant
    Filed: March 17, 1989
    Date of Patent: February 26, 1991
    Assignee: Kabushiki Kaisha Kenwood
    Inventors: Yutaka Mae, Yoichi Yaguchi, Masakatsu Sakamoto
  • Patent number: 4991207
    Abstract: 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: Grant
    Filed: March 21, 1989
    Date of Patent: February 5, 1991
    Assignee: Kabushiki Kaisha Kenwood
    Inventors: Kenichi Shiraishi, Hirokazu Kobayashi