baber/WOPTO huggingface dataset:
Patent JP-2004518873-A (JP)
Title: 燃料噴射弁
IPC: F02M63/00
Filed: 2002-03-14
Abstract: 特に混合気圧縮外部点火式内燃機関の燃焼室内に燃料を直接噴射するための燃料噴射弁（１）であって、ノズルボディ（２）から形成された弁ケーシングと、内燃機関のシリンダヘッド（４２）に対して燃料噴射弁（１）をシールするためのシールリング（３４）とが設けられている。シールリング（３４）は外円錐状に成形されており、その場合、シールリング（３４）の外半径と、シールリング（３４）のノズルボディ（２）を越えて突出した出張り（３５）とが流出方向に増大している。
Patent JP-2004535618-A (JP)
Title: プリント・サーバを使用してネットワーク経由で印刷するためのシステムと方法
IPC: H04L12/56
Filed: 2002-03-19
Abstract: ＰＣ、（１２、図１）ラップトップ・コンピュータ、ＰＤＡ、（１６、図１）ポケットＰＣ、携帯電話、（１８、図１）などの発信デバイスを操作するユーザが発信デバイスに印刷用デバイス・ドライバをロードすることなく「ドライバレス」プリント・サーバ（ＤＰＳ）システム（３８、図１）を介してドキュメント、イメージ、Ｗｅｂページを印刷できるシステム（図１）および方法を説明する。サーバ・システムでは、テーブル駆動型メカニズムを使用して、発信デバイスのオペレータが印刷したいドキュメントに関係するさまざまなソフトウェア・アプリケーションにより生成されるさまざまなプリンタ・イベントを処理し、取り扱う。ドキュメントに対応する印刷データは、さまざまなネットワークを介して、選択したターゲット・プリンタに送られる。システムは、ＤＰＳサーバ・コンピュータと発信デバイスとの間の双方向通信だけでなく、ＤＰＳサーバ・コンピュータとターゲット・プリンタとの間の双方向通信にも対応する。
Patent JP-2004528764-A (JP)
Title: Ｉｐネットワークへの複数パスアクセス内の通信パスを同時に使用する方法
IPC: H04L29/06
Filed: 2002-03-28
Abstract: ＩＰを基盤とする通信ネットワークを経由して通信セッションを実行する際に、複数のベアラ（１１，１３，１５）を経由して通信ネットワークへのアクセスが達成されており、通信アプリケーション（４７）と関連づけられた複数のパケットフローは、当該複数のベアラのそれぞれを介し、同時並行してルーティングされる。
Patent JP-2004532555-A (JP)
IPC: H04L12/56
Filed: 2002-03-28
Abstract: Method of prioritising the usage of slotted links by single network devices in a wireless network for adapting to varying traffic loads, comprising the steps of pre-setting a distribution of priorities for using a link to predetermined values, monitoring the current link usage, and adapting the priorities in accordance with the monitored usage. <IMAGE>
Patent JP-2004518824-A (JP)
Title: 硬質金属グレード粉末の製造方法
IPC: C09K23/38
Filed: 2002-03-08
Abstract: 硬質材料成分と金属バインダ成分と非水溶性圧縮補助剤成分とから成る硬質金属グレード粉末の製造方法であり、前記成分を含み、液相として純水を用いたスラリーを乾燥する工程を含む方法に関する。本発明の本質的な特徴は、硬質材料成分と金属バインダ成分とをまず水中で粉砕してスラリーを形成し、次いで粉砕の後乳化形状にあるスラリーにパラフィン等の圧縮補助剤成分を添加することにある。乳化物は、例えば脂肪族アルコールポリグリコールエーテルとモノジグリセライドとの混合物を乳化剤としてを用い、水を添加して製造する。
Patent JP-2004537062-A (JP)
Title: 暗号アプリケーションにおける一方向チェーンの効率的計算方法および装置
IPC: H04L9/32
Filed: 2002-04-15
Abstract: 暗号アプリケーションにおける一方向チェーンおよび他の一方向グラフの連続した値の効率的な計算の技法が開示される。一方向チェーンまたは一方向グラフは、位置ｉ＝１，２，…ｓを有する長さｓのチェーンとすることができる。各位置は、それに関連付けられた対応する値ν ｉ を有する。値ν ｉ は、所与のハッシュ関数または他の一方向関数ｈに対して、ν ｉ ＝ｈ（ν ｉ＋１ ）により与えられる。長さｓの一方向チェーンに対して、例えば、０≦ｊ≦ｌｏｇ ２ ｓについてｉ＝２ ｊ によって与えられる位置のヘルパ値の初期分布を記憶することができる（１２）。一方向チェーンの現在位置における出力値ν ｉ の所与の１つは、チェーンの現在位置と終点との間における一方向チェーンの別の位置についての事前に記憶された第１のヘルパ値を利用して計算することができる（１４）。所与の出力値の計算後、ヘルパ値の位置は、その後の出力値の計算を容易にするために調整される（１６）。この一方向チェーンの出力値の生成に関連する記憶計算積は、複雑度Ｏ（（ｌｏｇ  ｓ） ２ ）を有することが有利である。
Patent JP-2004519589-A (JP)
Title: 内燃機関用の燃料噴射装置
IPC: F02M57/02
Filed: 2002-04-13
Abstract: 本発明は、内燃機関用の燃料噴射装置であって、燃料噴射を制御するための少なくとも１つの電磁弁（５０）が設けられていて、該電磁弁（５０）が電気式の制御装置（５２）によって制御され、マグネットコイル（８８）と可動のマグネット可動子（８０）とを有しており、該マグネット可動子（８０）によって弁部材（５６）が少なくとも２つの位置の間で可動である形式のものに関する。このような形式の燃料噴射装置において、本発明では、マグネット可動子（８０）が少なくともほぼ次のような合金、すなわち少なくとも鉄とコバルトとを含有する合金から成っていて、この場合コバルトの含有率が１０％〜５０％の間であるようにした。制御装置（５２）によって、マグネットコイル（８８）を通る電流の時間的な経過が評価され、これに基づいて、燃料噴射が開始する電磁弁（５０）の切換え状態の時期が検出される。
Patent JP-2004522161-A (JP)
IPC: G04B19/06
Filed: 2001-05-11
Abstract: A timepiece has a portion of its case body capable of being removed from the rest of the case body. The removable portion bears an interchangeable dial plate. The device is configured in such a manner that the dial plate never serves as a stopping abutment when it is inserted in the timepiece. A closure device allows the interchangeable dial to be suitably fastened to the watch.
Patent JP-2005508860-A (JP)
Title: イミペネムの製造方法
IPC: C07D477/02
Filed: 2002-05-15
Abstract: 本発明は改良され、低コストであり、産業規模で利用できるイミペネム製造法に関する。
Patent JP-2003178508-A (JP)
Title: Optical disk device
Inventor: KISHI YUJI
IPC: G11B17/043
Filed: 2003-01-06
Abstract: <P>PROBLEM TO BE SOLVED: To provide an optical disk device that can surely hold a cartridge when an optical disk is loaded/ejected.  <P>SOLUTION: The optical disk device is configured such that a lock spring 16 engaging with a gripper 8 when a cartridge 1 is inserted up to a prescribed position is provided on a cartridge holder 10, and a lock release part 25a is integrally provided on a slider that loads/ejects an optical disk 2 to/from a rotary drive means. In the case of loading the cartridge, after the lock spring 16 engages with the gripper 8, the movement of the slider is started, when the cartridge is ejected, the slider is moved, and after the eject of the optical disk 2 is finished, the slider is further moved, and the lock release part 25a removes the lock spring 16 from the gripper 8.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2004215434-A (JP)
Title: Controller of motor, air conditioner using its controller and refrigerator
Inventor: KAMEYAMA HIROYUKI
IPC: F24F11/86
Filed: 2003-01-07
Abstract: <P>PROBLEM TO BE SOLVED: To drive a motor having a pulsation synchronized with a rotation in a high efficiency.  <P>SOLUTION: A controller 100 includes an inverter 150 for supplying a power to a three-phase brushless motor 160 having a rotor; a detector 190 for detecting the mechanical angle of the rotor; and a microprocessor 200 determined to suppress the pulsation generated in any of the voltage and the current of the power by the load torque of the three-phase brushless motor 160, to previously store the correcting value corresponding to the mechanical angle in an internal storage circuit to control any of the voltage and the current, based on the mechanical angle detected by the detector 190 and the correcting value corresponding to the mechanical angle.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004211492-A (JP)
Title: Excavating tool
Inventor: HAYASHI TAKESHI
IPC: E21B10/32
Filed: 2003-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide an excavating tool capable of smoothly performing excavating work and reducing excavating resistance to reduce load applied to a driving device.  <P>SOLUTION: This excavating tool comprises a diameter enlarging bit support body 11 rotated around an axis, and a diameter enlarging bit 12 having a bit head 26 provided with a projecting part 27 radially projected and provided with excavating edges 25 at the tip face, and has a diameter enlarging function by mounting the diameter enlarging bit 12 rotatably around a center axis O<SB>2</SB>positioned eccentrically from an axis O<SB>1</SB>of the diameter enlarging bit support body 11. The outer peripheral surface 27a of the bit head 26 is formed of a convex surface in a range of 90° based on the center axis O<SB>2</SB>from the apex of the projecting part 27 toward the excavating rotating direction side.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004219147-A (JP)
Title: Spindle device
Inventor: ENDO SHIGERU
IPC: B23Q17/10
Filed: 2003-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a spindle device equipped with rotation detectors that can realize high angular resolution without increasing the diameter of a tone ring and, in addition, can also detect the rotating direction of a spindle shaft.  <P>SOLUTION: The rotating speed and rotating direction of the spindle shaft 11 of this spindle device 10 are detected by means of the tone ring 18 provided in an inner ring spacer 16 and two rotation detectors 30 which output signals corresponding to the recessed and projecting shape of a recessed and projecting tooth section provided on the tone ring 18 by detecting the tooth section and, at the same time, are divided from each other. In addition, the rotation detectors 30 are constituted of MR sensors 19 and sensor holders 20 provided in an outer ring spacer 17 so that the phases of the output signals of the detectors 30 may be deviated from each other by a 1/4 period.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004220881-A (JP)
Title: Induction heating cooking device
Inventor: NOGUCHI SHINTARO
IPC: H05B6/12
Filed: 2003-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide an induction heating cooking device for maintaining original cooling efficiency by preventing a clogging caused by the dust deposited on an air intake by making the function of an air intake and an exhaust port of a fan arranged at the rear face of the main body reversible by a reversely rotatable fan motor arranged in the main body.  <P>SOLUTION: The fan motor 6 is adapted to rotate in normal direction (in sucking direction) against an air intake 8 at a cooking mode, and adapted to rotate in the reversed direction at the mode other than cooking, namely, the dust deposited on the air intake 8 is removed by making the fan motor perform an exhausting operation at the air intake 8 side, by the above, the induction heating cooking device can maintain the original cooling efficiency by preventing a clogging.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004222439-A (JP)
Title: Torque transmission device
Inventor: TOMURA SHUJI
IPC: B60L50/16
Filed: 2003-01-16
Abstract: <P>PROBLEM TO BE SOLVED: To easily reduce pulsation and variation in the torque of an engine.  <P>SOLUTION: At starting the engine 12, the torque pulsation generated in the torque of the engine 12 is obtained from detected signals of a crank angle detection sensor 40 and an engine water-temperature detection sensor 38. A control unit 36 controls an MG 1 by a drive circuit 16MG1 so that damping torque having the same phase as that of the torque pulse is generated, and prevents the torque pulsation of the engine 12 from being transmitted to a ring gear 22 from a planetary carrier 24.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2003340000-A (JP)
Title: Game machine
Inventor: HARADA NORIHIKO
IPC: A63F7/02
Filed: 2003-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To remarkably improve interest in a game machine such as a Pachinko machine.   <P>SOLUTION: A game board 5 of the Pachinko game machine 1 is provided with a variable display device 14 mounted approximately in its middle portion. The variable display device 14 has a liquid crystal display part 20 and a center frame 21 provided to surround the liquid crystal display part 20. A rear stage member is mounted in a lower portion of the center frame 21, and a front stage member is mounted in front of the rear stage member. Then, game balls B running on the game board 5 are led in from left and right ends of the front stage member and guided to the rear stage member. The guided game balls B are rolled approximately on diagonals of the rear stage member and change their rolling directions approximately toward a lateral middle portion of the rear stage member by ribs, or the like, on the deep side of the rear stage member.  <P>COPYRIGHT: (C)2004,JPO
Patent JP-2004216010-A (JP)
Title: Vacuum cleaner
Inventor: SUZUKI HITOSHI
IPC: A47L9/20
Filed: 2003-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner in which dust sticking on a corrugated filter can be efficiently removed by using a rotationally moving patting member.  <P>SOLUTION: A dust collection chamber 38a and a motor-driven air blower 17 for applying a sucking negative pressure upon the dust collection chamber 38a are provided in a cleaner body 1, and a corrugated pleats filter 48 is disposed on an air path between the dust collection chamber 38a and the air suction port 18a of the motor-driven air blower 17. Besides, a gear 50 is provided which is rotated around a rotary shaft orthogonal to a face connecting ridges of the pleats filter 48. The gear 50 is equipped with a pair of engaging elements 57 which are in contact with the pleats filter 48 and drop dust caught by the pleats filter 48, and a rotation operating means (helical spring of a cord reel) is provided for imparting rotation to the gear 50. A pair of engage elements 57 are provided at an interval of 90°.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004218169-A (JP)
Title: Method of wet spinning and device for the same
Inventor: MURAYAMA HISAMITSU
IPC: D01D5/06
Filed: 2003-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for wet spinning a synthetic fiber consisting of an organic polymer, dissolving coagulation unevenness among the group of single fibers spun from a group of ejection holes bored on a spinneret to suppress single yarn cutting by making the solvent concentration as uniform in a coagulation liquid filled in a coagulation bath.  <P>SOLUTION: This method for forming the group of single fibers (F) is provided by immersing the spinneret (2) in the coagulation bath (1) filled with the coagulation liquid, spinning the spinning solution obtained by dissolving the organic polymer with a solvent from the group of ejection holes bored on the spinneret (2) into the coagulation liquid from lower direction to an upper direction, extracting the contained solvent of the spun spinning solution to form the group of single fibers (F) is characterized by forming a coagulation liquid flow having a velocity component in crossing the group of the single fibers (F) in a zone of forming the group of the single fibers (F) by extracting the contained solvent.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004221478-A (JP)
Title: Semiconductor element housing package and semiconductor device
Inventor: BASHO YOSHIHIRO
IPC: H01L23/373
Filed: 2003-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a semiconductor element housing package, along with a semiconductor device using the same, capable of well radiating the heat generated by the semiconductor element to the outside or the atmosphere, and capable of strongly bonding the semiconductor element to a heat radiation member, with high sealing reliability with resin sealing.  <P>SOLUTION: The semiconductor element housing package comprises a heat radiator member 1 provided with a mounting part of a semiconductor element 9, an insulating frame 5 attached on its upper surface, and a terminal 6 attached on its upper part. The semiconductor element 9, the mounting part, the insulating frame 5, and the terminal 6 are, after the semiconductor element 9 is mounted, sealed with a sealing resin 12 that covers up to the side surface of the heat dispersing member 1, with the outside end of the terminal 6 being exposed. Related to the hear radiator member 1, a plurality of through metal bodies 3 of copper is embedded in the mounting part of a base body 2 comprising the matrix of copper and molybdenum or tungsten. A copper layer 4 (4a and 4b) is jointed to the upper and lower surfaces of the base body 2. The arithmetic average roughness Ra of the upper surface of the copper layer 4a and the side surface of the heat radiator member 1 is 0.05≤Ra≤30(μm). The heat conductivity of the heat radiator member 1 is well and the reliability for joining with the sealing resin 12 is high.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004228314-A (JP)
Title: Semiconductor device with pad
Inventor: KIMURA NAOKI
IPC: H01L21/3205
Filed: 2003-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To provide a semiconductor device having a pad which needs no cleaning nor sharpening of a probe pin.  <P>SOLUTION: In the semiconductor device having a pad, first conductors 1a and second conductors 1b are arranged on the front surface of a pad 1. The first conductors 1a have a hardness which is higher than that of the second conductors 1b and is not lower than that of the probe pin 11. The first conductors 1a are arranged on the front surface of the pad in such a manner that, while the probe pin 11 slides over the front surface of the pad 1 in contact with the front surface of the pad 1, the probe pin 11 may hit the first conductors 1a at least once.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2003227910-A (JP)
Title: Thin, flexible film
Inventor: COBB JR SANFORD
IPC: F24S23/70
Filed: 2003-01-23
Abstract: <P>PROBLEM TO BE SOLVED: To provide a thin flexible film made of a transparent material having a structured surface, wherein total internal reflection is attained so that light incident within certain angular ranges is totally internally reflected, on one side and is improved.  <P>SOLUTION: The new thin flexible film made of the suitable transparent material having the structured surface on the one side and a smooth surface on the side opposite to the structured surface is provided. The structured surface consists of a linear array of miniature substantially right angled isosceles prisms arranged side-by-side to form a plurality of peaks and grooves. When the film is flat, the perpendicular sides of the respective prisms make an angle of approximately 45° with the smooth surface on the side opposite to the structured surface.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2004226800-A (JP)
Title: Organic photoreceptor, image forming method, and image forming apparatus
Inventor: KURACHI MASAHIKO
IPC: G03G5/047
Filed: 2003-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide an organic photoreceptor which uses a transfer roller as a toner transfer means, prevents image defects liable to occur in formation of an electrophotographic image, such as black spots, voids and unevenness in transfer, and stably yields a clear image, and to provide an image forming method and an image forming apparatus.  <P>SOLUTION: The organic photoreceptor is used in the image forming method in which a transfer roller is pressed on an organic photoreceptor under a pressure of 25-1,000 g/cm<SP>2</SP>to transfer a toner image onto recording paper, and then a separation step and a fixation step are carried out to form an electrophotographic image. The organic photoreceptor has a laminated structure consisting of a charge generating layer and a charge transport layer on a conductive support, wherein the charge transport layer contains a charge transport material having a molecular weight of 550-2,000.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2003263142-A (JP)
Title: Method for eliminating liquid crystal display image and liquid crystal display method using the same
Inventor: KANBE MAKOTO
IPC: G02F1/133
Filed: 2003-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To speedily eliminate a residual image remaining on a liquid crystal display panel when switching off the main power to improve the display quality, and also to prevent the liquid crystal from being deteriorated by applying abnormal voltage thereto accompanying the residual image, in a liquid crystal display device using the active matrix type liquid crystal display panel having a storage function.  <P>SOLUTION: The liquid crystal display device is provided with an auxiliary power source 10 for holding electric power to be supplied to the liquid crystal display panel 1 for certain period even after the main power source 14 of the liquid crystal display device body is switched off, and when a power source OFF signal instructing to switch off the main power source 14 of the liquid crystal display device body is inputted, the device makes the liquid crystal display panel 1 to be fully turned on with the liquid crystal saturation voltage by using a driving signal generation circuit 8 and a driver controller 4, and to be fully and continuously turned off thereafter.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2004227721-A (JP)
Title: Optical recording/reproducing device
Inventor: HOSODA ATSUSHI
IPC: G11B7/0045
Filed: 2003-01-27
Abstract: <P>PROBLEM TO BE SOLVED: To provide an optical recording/reproducing device capable of reducing a load on a semiconductor laser or a drive circuit for driving the same when recording is performed in an optical disk having a plurality of recording layers.  <P>SOLUTION: The optical recording/reproducing device 1 for performing recording/reproducing in a disk 2 having a plurality of recording layers is provided with a pickup 3 equipped with a laser for performing recording/reproducing in the plurality of recording layers, a detecting means 4 for detecting a wobbling frequency from a detecting signal detected by the pickup 3, a control means 5 for setting all recordings in the recording layers to a constant linear velocity to output the signal of the disk 2, a clock generation circuit 6 for outputting a recording clock faster in recording in the recording layer near the pickup 3, a condition setting means 7 for setting recording/reproducing conditions for each recording layer on the basis of the wobbling frequency, a control means 8 for outputting a control signal on the basis of the recording/reproducing conditions and the recording clock, and a laser driving circuit 9 for driving the laser.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004239066-A (JP)
Title: Rotary fluid machinery
Inventor: MATSUMOTO KENJI
IPC: F01B3/02
Filed: 2003-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To enhance maintainability and durability of a seal member for reducing influence of thermal elongation of a pipe for supplying high temperature-high pressure vapor to rotary fluid machinery.  <P>SOLUTION: A pipe connecting means 103 connects a first vapor supply pipe 101 extending from an evaporator and a second vapor supply pipe 102 continuing with an expander, and has a cylindrical holder 104 fixed to the second vapor supply pipe 102 and annular gland packing 106 housed inside and fitted with the first vapor supply pipe 101 so as to be freely slidable in the shaft direction. Since the pipe connecting means 103 is arranged outside the expander, reduction in durability of the gland packing 106 by a high temperature can be prevented by radiating heat of the high temperature-high pressure vapor from the periphery of the gland packing 106, and since the pipe connecting means 103 for housing the gland packing 106 is exposed outside the expander, the gland packing 106 can be easily maintained without disassembling the expander itself.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004239981-A (JP)
Title: Color filter and liquid crystal display
Inventor: MORIYA NORIHISA
IPC: G02B5/20
Filed: 2003-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To provide a color filter with high position accuracy by accurately positioning a transparent substrate and a photomask when a member which decreases visibility of an alignment mark is formed.  <P>SOLUTION: The color filter comprises: a substrate; an alignment mark to be used for positioning and formed in a region except the display region on the substrate; a liquid repelling layer having liquid repelling property formed to cover the surface of the alignment mark; and a color layer formed in a pattern on the substrate.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004079505-A (JP)
Title: Composite electrolyte for fuel cell
Inventor: TAFT III KARL MILTON
IPC: H01M8/10
Filed: 2003-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To provide a proton-exchange membrane with a low price and high performance used for a fuel cell of PEM and other low operation temperature, and to provide a method for producing one or more membranes having higher cost efficiency than a method used for producing NAFION.  <P>SOLUTION: The composite electrolyte used for an electrochemical fuel cell contains (i) an inorganic cation exchange material; (ii) a silica-based binder; and (iii) a polymer-based binder. The electrochemical fuel cell contains (i) an anode; (ii) a cathode; (iii) a fuel supply means for supplying fuel to the anode; (iv) an oxidizing agent supply means for supplying an oxidizing agent to the cathode; and (v) the composite electrolyte arranged between the anode and the cathode.  <P>COPYRIGHT: (C)2004,JPO
Patent JP-2004241463-A (JP)
Title: Method of vapor depositing compound semiconductor
Inventor: FUJIKAWA KAZUNARI
IPC: H01L21/338
Filed: 2003-02-04
Abstract: <P>PROBLEM TO BE SOLVED: To obtain a method of vapor depositing a compound semiconductor which can reduce the change of electrical characteristics before or after the epitaxial wafer such as a HEMT (high electron mobility transistor) , etc. with a non-alloy layer using an H<SB>2</SB>Se is grown, that is, which can reduce the memory effect of the H<SB>2</SB>Se in a reaction furnace.  <P>SOLUTION: The method of vapor depositing the compound semiconductor is characterised by including the steps of finishing the growth of an epitaxial layer for an electronic device structure having an n-type non-alloy contact layer 7 to be an object, then performing a process for temperature raising while a group V raw material flows as a pseudo-growth, and thereafter again growing the epitaxial layer for the electronic device structure having the n-type non-alloy contact layer 7 to be the object.  <P>COPYRIGHT: (C)2004,JPO&NCIPI