baber/WOPTO huggingface dataset:
Patent JP-2006182628-A (JP)
Title: Aggregate for fire-proofing coating material and fire-proofing coating mortar composition using the same
Inventor: YAMAMOTO MORIO
IPC: C04B14/02
Filed: 2004-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide aggregate for a fire-proofing coating material and a fire-proofing coating mortar composition using the aggregate in which fire-proofing coating mortar is suppressed of clogging in a hose when forcibly sent by a pump and the sagging or the peeling off of the mortar sprayed on a wall surface or a ceiling does not occur.  <P>SOLUTION: The aggregate for the fire-proofing coating material has 0.6-5.0 mm particle diameter and 170-250% water absorption calculated by following formula (2) after centrifugal dehydration, [formula (2):(aggregate water absorption after centrifugal dehydration (%))=(quantity of aggregate water absorption after centrifugal dehydration)/(absolute dry mass of aggregate)×100]. The fire-proofing coating mortar composition contains the aggregate for the fire-proofing coating material and particles containing cement and the content of the aggregate for the fire-proofing coating material is 10-40 wt.%, the particle diameter of the particles containing cement is ≤0.15 mm and the content of the particles is 50-80 wt.%.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006181556-A (JP)
Title: Bell cup for rotary atomizing type coating apparatus
Inventor: MASUKO OSAMU
IPC: B05B3/10
Filed: 2004-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a bell cup for a rotary atomizing coating apparatus capable of achieving highly fine atomization even if the cut is turned at a high speed.  <P>SOLUTION: A bell cup 1 is used in the rotary atomizing type coating apparatus having a rotation shaft 3 and the bell cup 1 which is installed on the rotation shaft and on the surface of which a coating is supplied, and the surface of the bell cup 2 has a surface roughness Ra of not lower than 5μm.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006189494-A (JP)
Title: Transfer device and image forming apparatus
Inventor: FURUKAWA TOSHIRO
IPC: G03G15/16
Filed: 2004-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To relax the dimensional accuracy of a roll, to prevent damages to a member with which the rollers are in contact, and to restrain warpage in a transfer roller.  <P>SOLUTION: The transfer device 64M comprises the cylindrical transfer roller 101M formed from an ion conductive elastic member; a roller rotation shaft 102M projecting from both axial ends of the transfer roller 101M; bearings 103M rotatably supporting the roller rotation shaft 102M at both axial ends of the transfer roller 101M; pressing springs 104M, disposed at both axial ends of the transfer roller 101M and pressing the roller rotation shaft 102M via the bearings 103M in a direction in which the transfer roller 101M presses a photoreceptor drum 51M; and cylindrical rolls 105M, each of which is disposed on the roller rotation shaft 102M opposite from the transfer roller 101M with the corresponding bearing 103M in between them.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005534660-A (JP)
Title: ピリダジン誘導体
IPC: A61P11/06
Filed: 2003-05-12
Abstract: 式Iのピリダジン誘導体は、ホスホジエステラーゼIＶ阻害剤として作用し、骨粗しょう症、腫瘍、悪液質、アテローム硬化症、慢性関節リウマチ、多発性硬化症、真性糖尿病、炎症プロセス、アレルギー、ぜん息、自己免疫疾患、心筋疾患およびＡIＤＳを治療するために使用することができる。
Patent JP-2006500351-A (JP)
IPC: C07D403/12
Filed: 2003-08-04
Abstract: This invention provides compounds defined by Formula I or a pharmaceutically acceptable salt thereof, wherein R<SUP>1</SUP>, Q, R<SUP>2</SUP>, R<SUP>3</SUP>, and R<SUP>4 </SUP>are as defined in the specification. The invention also provides related pharmaceutical compositions, methods of use, and combinations.
Patent JP-2006501227-A (JP)
IPC: C07D473/06
Filed: 2003-08-16
Abstract: The invention concerns substituted xanthines of general formula (I), wherein: R<1> to R<4> are such as defined in Claim 1, and tautomers, stereoisomers, mixtures, prodrugs and salts thereof. Said compounds have advantageous pharmacological properties, in particular an inhibiting effect on the activity of the dipeptidyl peptidase IV (DPP-IV) enzyme.
Patent JP-2005537761-A (JP)
Title: インテリジェント通信ノードオブジェクト・ビーコン・フレームワーク
IPC: H04W84/18
Filed: 2003-08-25
Abstract: 移動体アドホックネットワークは、複数の無線移動体ノード(12)と、ノードを相互に接続する複数の無線通信リンク(R2)とを有する。ノード(12)は、可変ビーコン信号を使用して広告する。方法は、ビーコン信号検出での近隣発見を有する。方法は、初期検出レートを使用する所定の移動体ノード(12)で初期検出周波数で可変ビーコン信号を探し、初期検出周波数で可変ビーコン信号を探す間に初期検出レートから最大検出レートまで検出レートを増加させることを有する。検出周波数も変化してもよい。
Patent JP-2006504688-A (JP)
Title: 呼吸器系疾患患者の死亡率を下げるためのチオトロピウム塩
IPC: A61P11/08
Filed: 2003-09-03
Abstract: 本発明は、治療上有効量の（1α,2β,4β,5α,7β）-7-[（ヒドロキシジ-2-チエニルアセチル）オキシ]-9,9-ジメチル-3-オキサ-9-アゾニアトリシクロ[3.3.1.0 2,4 ]ノナン塩を投与することを含む患者の死亡率を下げる方法に関する。
Patent JP-2006502393-A (JP)
Title: 検出ホイール
IPC: G01D5/249
Filed: 2003-09-20
Abstract: 本発明は、内燃機関のクランクシャフトの回転速度及び／又は回転角度を測定する装置に使用する検出ホイールに関する。前記検出ホイールは、外周に配置され、前記歯部の幅、ならびに歯部間の隙間を画定するフロントリッジ及びリヤリッジをそれぞれ包含する複数の歯部を具備する。歯部のそれぞれのフロントリッジ及びリヤリッジは、実質上同一の角度距離だけ互いに間隔を空けて配置される。限定数の異なる歯幅は、前記ホイールの外周に配置される。本発明は、ホイールの外周に分布した少なくとも３つの連続歯部の幅の順序が決定されることを特徴とする。
Patent JP-2006502858-A (JP)
Title: 含ケイ素アルミナ担体、その調製法、ならびに、当該アルミナ担体を含む触媒
IPC: B01J23/85
Filed: 2003-09-29
Abstract: 本発明は含ケイ素アルミナ担体、当該担体を調製するプロセス、そして当該担体を含む触媒に関する。本発明におけるアルミナ担体は、その表面に添加物のケイ素を濃縮された状態で含み、アルミナ担体の表面におけるケイ素のアルミニウムに対する原子比とアルミナ担体のそれとの差分は、少なくとも０.１０である。含ケイ素アルミナ担体の調製プロセスは、超微細のケイ素化合物を加えるステップを含む。本発明のアルミナ担体を用いることで、優れた物理化学特性および性能を有する、炭化水素の水素化処理用触媒を製造することができる。
Patent JP-2006520184-A (JP)
Title: 組換えタンパク質変種
IPC: A61K38/095
Filed: 2003-10-31
Abstract: 本発明は、免疫治療成分として有用な新規組換えタンパク質変種に関する。本発明は、前記タンパク質変種をコードするDNA配列及び前記タンパク質変種を含む組成物にも関する。
Patent JP-2006505109-A (JP)
Title: 電気化学電池
IPC: H01M4/131
Filed: 2003-10-28
Abstract: 電気化学電池は、負極、正極、及びその間の電解質を含む。負極は、還元状態のマグネシウムを含み、正極は、ルチル構造を含む。ルチル構造は、低電圧を作るために負極から受取ったマグネシウムイオンを介在させることが可能である。この電気化学電池は再充電可能である。それに加えて、この電気化学電池は関連技術電気化学電池よりも安価で、環境に優しく、高い体積密度を有する。製造方法も提供する。
Patent JP-2006512125-A (JP)
Title: 根管内の湿分の存在を判定する用具および方法
IPC: A61C5/02
Filed: 2002-12-27
Abstract: 根管内の状態、具体的には湿分の状態を検査し、根管を乾燥させる方法および装置。この方法によれば、その先端部（１６）に変色指示薬（２２）を有する一片の巻かれた紙の性質を持った小さい尖った用具（１０）が根管内に挿入される。変色指示薬（２２）は、色の変化によって、管内に湿分が存在するか否か、第２に湿分が潜在的に細菌状態について指示するかどうかの情報を提示する。
Patent JP-2006513561-A (JP)
Title: パラレル欠陥検出
IPC: H01L21/66
Filed: 2003-11-06
Abstract: パラレルに欠陥を検出する方法および装置を提供する。この方法は、第１処理ツール（１０５Ａ）によるワークピースの処理に関連するデータを受信するステップと、第２処理ツール（１０５Ｂ）によるワークピースの処理に関連するデータを受信するステップと、第１処理ツール（１０５Ａ）によるワークピースの処理および第２処理ツール（１０５Ｂ）によるワークピースの処理の少なくとも一方に関連する欠陥が生じたかどうか判断すべく、受信したデータの少なくとも一部を共通する欠陥モデル（１８０）と比較するステップと、を含んでいる。
Patent JP-2006514522-A (JP)
IPC: H02K29/03
Filed: 2003-10-17
Abstract: The machine has a primary part with a number of grooves and electrical strands, a secondary part (1) with a number of pole pairs (P1-P4), each consisting of two magnetic poles (2) of different polarity. The pole gap (6) is essentially the same for all pole pairs and results from a uniform distribution of all poles on the secondary part and at least one pole pair is shifted by a defined distance (5) relative to an equidistant distribution of pole pairs for unchanged pole gaps. Independent claims are also included for the following: (a) an arrangement for implementing the inventive method (b) a magnetizing tool (c) and an assembly tool.
Patent JP-2006190515-A (JP)
Title: Method of manufacturing tube and granular matter storing container
Inventor: TANAKA TOSHIKAZU
IPC: H01J9/395
Filed: 2005-01-04
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a tube capable of supplying granular matters to a glass tube with as little wear as possible.  <P>SOLUTION: A through-hole 3a, provided at a bottom part of a hopper 1, becomes a retention-hole 3 where a piece of granular matter is retained by being closed from outside the hopper with a lid part 2. With steps of dropping and retaining one piece of the granular matter in the retention hole 3, tilting a posture of the hopper 1 and letting the rest of the granular matters rolled away from the retention hole 3, separating the lid part 2 from the retention hole 3 with the hopper 1 in a tilted state, and discharging the retained piece outside the hopper 1 by its own weight, one piece of the granular matter is separated and discharged out of a group of the granular matters stored in the hopper 1.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006190853-A (JP)
Title: Quantum well structure and its manufacturing method
Inventor: SATO TOMONARI
IPC: H01S5/343
Filed: 2005-01-07
Abstract: <P>PROBLEM TO BE SOLVED: To provide a quantum well structure formed of high-quality crystals, and to provide its manufacturing method.  <P>SOLUTION: A multiple quantum well 10 is formed on an InP substrate 1, and it is made by stacking a barrier layer 4 and a well layer 5 with a different grating constant. The well layer 5 is formed at a growth speed of 0.4 nm/sec or more, so that three-dimension growth is suppressed, and the well layer 5 is made to have a compression deformation of 1.5% or more to the grating constant of the substrate 1.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006190893-A (JP)
Title: Substrate treatment apparatus
Inventor: OKUNO EIJI
IPC: H01L21/304
Filed: 2005-01-07
Abstract: <P>PROBLEM TO BE SOLVED: To provide a substrate treatment apparatus for arranging the connection section of an exhaust pipe for exhausting air or liquid at the lower part of the substrate treatment apparatus, securing maintenance properties of the substrate treatment apparatus, and further reducing cost required for installation.  <P>SOLUTION: The substrate treatment apparatus comprises a plurality of substrate treatment units 41-48 for treating a substrate W; a main conveyance robot 30 for conveying the substrate to them; a conveyance chamber 25 for storing the substrate conveyance robot 30 while the substrate W conveyed by the substrate conveyance robot 30 passes; and exhaust pipes 51-58 for exhausting air or liquid from the substrate treatment units 41-48. The substrate treatment units 41-48 are arranged in lamination adjacent to the conveyance chamber 25. The exhaust pipes 51-58 have connection sections 51a-58a to factory power facilities in which the substrate treatment apparatus has been installed at the lower portion of the conveyance chamber 25.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005165349-A (JP)
Title: Heating rotor device and fixing device
Inventor: EBARA MASANAO
IPC: H05B6/02
Filed: 2005-01-11
Abstract: <P>PROBLEM TO BE SOLVED: To prevent a waste of energy due to heat generation of a support part by making a heating part of a rotor having the heating part effectively generate heat and effectively preventing the support part of the rotor from heating up.  <P>SOLUTION: A heating rotor device, used for a fixing device which heats a recording material carrying an unfixed toner image to fix the toner image, has the rotor 11 having the heat generation part and an induction coil 14B provided in the rotor 11, and is configured to make the heat generation part generate heat with an induction current generated at the heat generation part of the rotor 11 by supplying a high-frequency current to the induction coil 14B; and the induction coil 14B is wound around a core 14A fixed to a support shaft 14D on which the rotor 11 is rotatably supported and a support part 12 making the support shaft 14D support the rotor 11 rotatably is made of a nonmagnetic material.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006195720-A (JP)
Title: Information processing device and image forming apparatus
Inventor: MIYOSHI NOBUKAZU
IPC: G06F21/60
Filed: 2005-01-13
Abstract: <P>PROBLEM TO BE SOLVED: To strengthen the monitoring of unauthorized removal.  <P>SOLUTION: A communication monitoring part 26 continuously monitors whether or not communication with an external device is possible, and a removal monitoring part 28 commands a removal control part 22 to lock an HDD 18 while a communication-disabled state is detected. The removal control part 22, by the command, actuates a lock mechanism 20 to lock the HDD 18 against removal. The removal monitoring part 28 commands the removal control part 22 to unlock the HDD 18 while a communication-enabled state is detected. The removal control part 22, by the command, actuates the lock mechanism 20 to unlock the HDD 18. During the unlocking, if the removal of the HDD 18 is detected, the removal monitoring part 28 notifies the removal to the external device.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006192693-A (JP)
Title: Inkjet recording apparatus
Inventor: KURATA TETSUJI
IPC: B41J2/165
Filed: 2005-01-13
Abstract: <P>PROBLEM TO BE SOLVED: To provide a wiper mechanism suitable for a small-sized printer, which makes ink hardly fly about, and which enables a nozzle surface of a head to be perfectly wiped, while reducing an operation load.  <P>SOLUTION: This inkjet recording apparatus comprises a carriage which is equipped with a recording head and does printing by reciprocating scanning movement, and a wiper which is arranged in the scanning range of the carriage and performs a wiping operation by moving in such a manner as to be capable of protruding/receding with respect to the height of the nozzle surface of the recording head. The carriage is stopped in a state wherein a wiper blade is deflected in a position midway through the wiping operation, and the wiper moves in the direction of reducing the deflection of an elastic body, when performing the unperformed wiping operation for perfectly wiping the nozzle surface up to its end.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005200654-A (JP)
Title: Color improvement of film-forming composition
Inventor: BLOOM PAUL D
IPC: C08K3/00
Filed: 2005-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide color improvement of a film-forming composition.  <P>SOLUTION: The composition contains, consists of, or substantially consists of a stabilized glycol ester of a plant oil fatty acid with butylhydroxytoluene. And, a latex film-forming composition contains stabilized glycol ester such as stabilized propylene glycol monoester (PGME). Furthermore, the method for stabilizing glycol ester of plant oil fatty acids comprises combining with butylhydroxytoluene. And, the preparation method is for preparing the film-forming composition containing stabilized glycol ester such as stabilized PGME mixture.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006193492-A (JP)
Title: Cosmetic for lip containing coenzyme q10, ascorbic acid derivative and vitamin k or the like as active ingredient
Inventor: MITSUI YUKIO
IPC: A61K8/00
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a cosmetic for the lips, particularly lip cream and lipstick having moisture retention and persistency thereof, having high moisture retention by CoQ10, particularly utilizing retention of action of active type CoQ10, namely CoQH2 or CoQH and further utilizing effective action of AsA, vitamin K, etc.  <P>SOLUTION: The cosmetic for the lips is obtained by formulating CoQ10 with an AsA derivative, especially AsA-P-Mg and further vitamin K, vitamin A, vitamin E, etc. The vitamin K is synthesized or derived from plants. The cosmetic for the lips is obtained by utilizing a component in which liposome is formed.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006194048-A (JP)
Title: Top-railed sliding door device
Inventor: TATAMINO OSAMU
IPC: E05D15/06
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a top-railed sliding door device requiring no extension of a guide rail to the door tail side of a door opening W for the horizontally slidable suspended door.  <P>SOLUTION: The top-railed sliding door device includes a first guide rail 11 fixed to the top rail of the door opening W; a second guide rail 12 fixed to the top rail of a door 30; a first door roller 21 installed to the top rail of the door 30 at the door front side; and a second door roller 22 installed to the top rail of the door opening W at the door tail side. The first and second door rollers 21, 22 suspend the door 30 and are moved along the first and second guide rails 11 and 12.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006198063-A (JP)
Title: Backrest mounting device of chair
Inventor: TSUKIJI HIROAKI
IPC: A47C7/40
Filed: 2005-01-19
Abstract: <P>PROBLEM TO BE SOLVED: To provide a backrest mounting device of a chair with excellent strength, usable for a backrest with a large back supporting area, without any trouble in the strength, and making a user comfortable with less restriction on the design.  <P>SOLUTION: The backrest mounting device has a pair of left and right back rods 11 and 11 standing on both sides in the rear of the chair 1. A receiving member 14 with an abutting face 43a abutting to the rear surface of the backrest 7 on the front side is attached to the upper end of each back rod 11. The receiving members 14 and the intermediate part of the backrest 7 in the vertical direction are screw-engaged, and the lower parts of the back rods 11 and 11 are connected to each other with a connection member 12. Then, the lower part of the backrest 7 is fixed to the connection member 12.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005292786-A (JP)
Title: Fixing device and image forming apparatus using the same
Inventor: HAYASHI MASATAKA
IPC: G03G21/20
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To obtain a fixing device which is equipped with a housing to house a heating member and a pressure member inside and which fixes an unfixed toner image transferred to a recording medium, and which restrains thermal adverse influence exerted on peripheral devices by preventing air flow from being caused in the housing to the utmost, and which prevents troubles, such as faulty fixing, hot offset, the winding of a recording medium and abnormal heating or the like from being caused, by preventing uneven temperature distribution in the member length direction of the heating member and/or the pressure member from occurring.  <P>SOLUTION: An air flow control part for controlling the flow rate of the air flow flowing, between the inner wall surface of the housing and the member surface of the heating member and/or the pressure member, is provided between the housing and the heating member and/or the pressure member.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006202706-A (JP)
Title: Lighting fixture
Inventor: NISHIMURA KIYOSHI
IPC: F21Y103/00
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide a thin type lighting fixture with mechanical strength improved, and brightness unevenness alleviated.  <P>SOLUTION: The lighting fixture 1 is provided with a lamp housing part 2 equipped with a light diffusion cover 2b in front, a plurality of cold-cathode lamps 4 housed in the lamp housing part 2 and arrayed in parallel with each other, and a reflecting plate 5 equipped with barrier rib parts 5b positioned between the cold-cathode lamps 4 and guiding light emitted from the cold-cathode lamps 4 to guide it to the light diffusion cover 2b. An interval between the barrier ribs 5b is larger than an outer diameter of the cold-cathode lamp 4, a tip part 5c of the rib part 5b is located toward the side of the light diffusion cover 2b than the cold-cathode lamp 4, and a distance from the tip part 5c of the rib part 5b to the light diffusion cover 2b is within four times the outer diameter of the cold-cathode lamp 4.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006209165-A (JP)
Title: Concurrent execution multiplicity control system and method
Inventor: NAKAMINAMI TOSHIHIRO
IPC: G06F15/00
Filed: 2005-01-25
Abstract: <P>PROBLEM TO BE SOLVED: To provide a multiplicity adjustment system that supports the design of the concurrent execution multiplicity of requests to a system for ensuring performance and stable system operation.  <P>SOLUTION: Multiplicity adjustment agents 110 and 112 collect request information 114 from a subsystem 108 including monitored system components 113 and 115. A subsystem-based multiplicity control server 105 classifies and merges the request information collected from the each subsystem 108 by components and request paths. According to the request information, an integrated multiplicity analysis server 104 calculates a necessary multiplicity.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006206660-A (JP)
Title: Hydrotalcite suspension, polymer blend composition and warmed rubber composition
Inventor: EMORI NOBUYOSHI
IPC: C08L27/06
Filed: 2005-01-26
Abstract: <P>PROBLEM TO BE SOLVED: To provide a stable aqueous dispersion (suspension) of fine hydrotalcite powder and a polymer blend composition produced by using the dispersion, containing an unsaturated nitrile-conjugated diene rubber and a vinyl chloride resin and having high heat stability.  <P>SOLUTION: The hydrotalcite suspension having a hydrotalcite concentration of 5-40 wt.% is composed of 100 pts.wt. of hydrotalcite, 3-20 pts.wt. of a surfactant, 0.1-20 pts.wt. of a dispersing agent, and water. The polymer blend composition is produced by mixing the suspension, an unsaturated nitrile-conjugated diene rubber latex and a vinyl chloride resin latex, coagulating the mixture and drying the product. The mixing ratio of the rubber in the unsaturated nitrile-conjugated diene rubber latex to the resin in the vinyl chloride resin latex is 90/10 to 40/60 by weight.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006211270-A (JP)
Title: Image forming apparatus and image forming operation control program
Inventor: MIYAMOTO KIYOUKUN
IPC: G03G21/00
Filed: 2005-01-27
Abstract: <P>PROBLEM TO BE SOLVED: To easily view that image formation is broken.  <P>SOLUTION: The image forming apparatus is equipped with an image area detection section 303 which detects an image area of image data, an area decision section 304 which decides whether an image formed based upon the image data projects from an image formation area on recording paper, and an image formation control section 305 which forms only the image in the image formation area on recording paper when the image projects from the image formation area on the recording paper and controls the operation of the image formation section so as to form a guide mark indicating that the image projects from the image formation area on the recording paper.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006211309-A (JP)
Title: Optical limiter amplifier
Inventor: SATOU RIEKO
IPC: H04B10/556
Filed: 2005-01-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a small-sized optical limiter amplifier that is simplified through the elimination of the need for an optical circulator or the like, the optical path length of which can easily be adjusted, and that suppresses a pattern effect.  <P>SOLUTION: The optical limiter amplifier includes: a low saturation semiconductor optical amplifier 106; a optical multiplexer/demultiplexer 102; two optical waveguides; a second optical multiplexer/demultiplexer 103; and a semiconductor optical amplifier 105 for receiving a continuous light 101 with a wavelength λ2 together with an optical signal 100 (λ1) and generating an inverted optical signal with the wavelength λ2 at one side of two optical waveguides and whose logical code is inverted with respect to that of the optical signal 100 and a wavelength filter 109 for interrupting the optical signal 100(λ1), which are provided to one of the two optical waveguides, and the second optical multiplexer/demultiplexer 103 multiplexes a normal optical signal guided through the other optical waveguide and the inverted optical signal guided through the one optical waveguide, and thereafter the multiplexed optical signal is given to one terminal of the low saturation semiconductor optical amplifier 106, which outputs from its other terminal an optical signal (λ1) with a prescribed intensity via a wavelength filter 110 interrupting the optical signal (λ2).  <P>COPYRIGHT: (C)2006,JPO&NCIPI