baber/WOPTO huggingface dataset:
Patent JP-2005532566-A (JP)
IPC: G01D5/347
Filed: 2003-07-01
Abstract: The invention relates to an apparatus, notably an X-ray apparatus, which comprises two components which are displaceable relative to one another. A position visualization unit is arranged on one component of the apparatus and the other component of the apparatus is provided with an image acquisition unit whose acquisition zone contains a segment of the position visualization unit which changes due to the motion. The image acquisition unit acquires images of the segment present in the acquisition zone and applies such images to an evaluation unit which extracts position information from the images.
Patent JP-2006501320-A (JP)
Title: 感光性底反射防止膜＜発明の背景＞
IPC: C08G73/02
Filed: 2003-07-28
Abstract: 【課題】反射防止組成物、およびこれらの組成物を回路形成に用いる方法を提供する。   【解決手段】組成物は溶媒系に溶解しまたは分散するポリマーを含み、好ましいポリマーはポリカーボネート、ポリスルホニルエステル、ポリカーボネートスルホン、およびこれらの混合物を含む、組成物はシリコンウェーハーや他の基体上に塗布され、硬化または固化膜を形成でき、この膜は始はフォトレジスト現像液に不溶で、露光すると硬化または固化膜はフォトレジスト現像液に可溶となり現像されたファトレジスト層と一緒に選択的に除去できるので別の除去工程が省ける。
Patent JP-2005534508-A (JP)
Title: シート状被加工材を走査し、それらからパターン片を裁断する方法
IPC: B26F1/38
Filed: 2003-07-29
Abstract: 支持表面上に支持されたシート状被加工材を走査し、裁断する方法において、被加工材が自動的に走査されて、その周縁を決定するとともに、被加工材の周縁内の傷が検知される。次いで、マーカーのレイアウトが被加工材上で行われ、パターン片の配置工程が始められる。最初のパターン片が被加工材上に配置され、次のパターン片が被加工材に配置され、これと同時に、第１のパターン片が切断される。これらの工程がすべてのパターン片が被加工材から切断されるまで繰り返される。
Patent JP-2006500501-A (JP)
Title: ガス浄化装置の改良及び関連
IPC: F01N3/027
Filed: 2003-09-22
Abstract: ガス浄化装置（４）を開示する。ガス浄化装置はガス流入口（６）と、ガス流出口（８）と、ガス流入口及びガス流出口間に形成される流体連通路（１０）と、流体連通路に設けられるフィルタ（１４）と、イオン化手段（１６）とを含む。イオン化手段は少なくとも部分的にフィルタ内にある。このようなガス浄化装置を排気管（２）の排気ガス流通路に組み込んだ車両（３）もまた開示する。
Patent JP-2006501294-A (JP)
Title: 殺微生物組成物及びその使用方法
IPC: A01N51/00
Filed: 2003-09-25
Abstract: Ｎ’−ヒドロキシ−Ｎ−シクロヘキシルジアゼニウムオキシドのカリウム塩（ＫＨＤＯ）及び希釈剤を含む組成物を、殺菌に使用する方法。そのような組成物で１種以上のある種の他の殺菌活性成分を含むものは、一般に微生物と戦うために有用である。そのような他の殺菌活性成分は、アルコール、イソチアゾロン、活性化ハロゲン化合物、ホルムアルデヒド放出化合物、フェノール化合物、アルデヒド、酸及びエステル、ビフェニル、尿素誘導体、Ｏ−アセタール、Ｏ−フォルマール、Ｎ−アセタール、Ｎ−フォルマール、ベンザアミジン、フタルイミド、ピリジン誘導体、第４級アンモニウム及びホスホニウム化合物、アミン、両性化合物、ジチオカルバメート、活性酸素含有化合物、及びこれらの混合物から選択される。
Patent JP-2006503085-A (JP)
Title: メタセシス反応用（予備）触媒としてのルテニウム錯体
IPC: C07F15/00
Filed: 2003-10-10
Abstract: 本発明は、以下の式（Ｉ）（式中、Ｌ 1 、Ｘ、Ｘ’、Ｒ 1 、Ｒ 2 、Ｒ 3 及びｎは本願明細書において定義したものである）のルテニウム錯体の新規（予備）触媒に関する。式１の新規ルテニウム錯体は、メタセシス反応に都合の良い（予備）触媒であり、及び即ち、閉環メタセシス、クロスメタセシス又はエン−インメタセシス反応に適用することができる。本発明の他の態様は、以下の式（ＩＩ）の新規中間体である。 【化１】
Patent JP-2006513597-A (JP)
Title: アナログ・デジタル変換器
IPC: H03M1/36
Filed: 2003-03-26
Abstract: 複数の比較器のそれぞれを逐次比較方式で選択的に使用可能または使用不能にし、それらの比較器からの出力を合計してデジタル信号を生成するアナログ・デジタル変換器である。実際の比較器の間に仮想比較器の補間出力を形成するように計算した比率で隣接する比較器の出力を重み付けして混合することにより、変換器に固定ハードウェア要素を追加しなくても、このような仮想比較器を多数作成することができる。これにより、変換器は、信号を比較するための実際のハードウェア要素をＮ個しか使用せずに、ｎビットのデジタル出力を生成することができる（Ｎ＜２ ｎ −１）。変換器内の複数の比較器はそれぞれ、使用可能信号用の入力を有し、使用可能信号は、個々の比較器を使用可能または使用不能にし、それらの出力を修正するように操作することができる。このような変換器を用いてアナログ入力信号をデジタル信号に変換する方法も開示する。
Patent JP-2006505595-A (JP)
IPC: A61K8/41
Filed: 2003-10-17
Abstract: An oxidative dye composition for keratin fibers contains 2- amino-5-ethylphenol (I) or its physiologically-compatible water-soluble salts.
Patent JP-2006505860-A (JP)
IPC: G06F15/78
Filed: 2003-10-30
Abstract: Integrated circuit (1) with a system base chip that has base elements for a transceiver system for a motor vehicle data bus, i.e. system power supply (3) and circuit block (2) for system resetting and monitoring. The circuit also comprises an interface circuit (4, 5) that autonomously processes a data bus protocol, e.g. local interconnect network (LIN) protocol.  Data bus protocol processing includes bit rate detection and a serial-parallel converter (2) that uses the bit rate detected by the interface circuit.
Patent JP-2006506476-A (JP)
Title: 改善された接着特性を有する化学的に不活性な触圧接着剤、この製造方法
IPC: C08F290/06
Filed: 2003-10-31
Abstract: 本発明は、極性および半極性基板に対する改善された接着特性を有する化学的に不活性な触圧接着剤、並びにこれらの製造並びに、特に極性および半極性基板に対する大きい粘着を提供する触圧接着剤バンドを得るための使用に関する。
Patent JP-2006507318-A (JP)
IPC: A61L15/42
Filed: 2003-10-31
Abstract: An adhesive for medical patches or for transdermal therapeutic systems which contains a component or a combination of at least two components, such as (a) polyvinyl alcohols, (b) cellulose derivatives, (c) polyethers, (d) acid anhydrides and their acids and salts, as well as (e) non-pressure-sensitive adhesive polyacrylates. The adhesive has a tackiness which is activated and/or increased by contact with moisture or by absorption of moisture.
Patent JP-2006507343-A (JP)
Title: メチル−ｔ−ブチルエーテルの精製
IPC: C07C43/04
Filed: 2003-09-09
Abstract: 本発明は、１３Ｘ又はゼオライトＹのような大細孔のゼオライトと液相中で接触させることによるメチル−ｔ−ブチルエーテル（ＭＴＢＥ）プロセス流の精製に関する。
Patent JP-2006510244-A (JP)
IPC: H04L12/70
Filed: 2003-10-30
Abstract: A method for processing a service connection between a user terminal and a Wireless Local Area Network (WLAN) is provided. A WLAN interactive network includes at least a WLAN user terminal, a WLAN access unit, a service control unit and a user information storage unit. The method includes setting flags that represent the attached or detached status of the service connection between the user terminal and the WLAN in the WLAN user terminal and the service control unit respectively; and establishing or canceling the connection between the user terminal and the network through the interaction between the WLAN user terminal and the WLAN, meanwhile modifying the corresponding flags.
Patent JP-2005539088-A (JP)
Title: 三環式ステロイドホルモン核内受容体モジュレーター
IPC: C07D263/56
Filed: 2003-06-13
Abstract: 本発明は、有効量の式Ｉ：   【化１】     で示される化合物またはその医薬的に許容しうる塩を治療を必要とする患者に投与することを含む、ステロイドホルモン核内受容体調節に感受性のある病的障害の治療方法に関する。さらに、本発明は、その医薬的に許容しうる塩を包含する新規な式Ｉの医薬的化合物ならびに有効成分として式Ｉの化合物を含む医薬組成物を提供する。
Patent JP-2006509910-A (JP)
Title: 銅活性化溶液と半導体基板のシード層の増強方法
IPC: C23C18/40
Filed: 2003-12-09
Abstract: 本発明は、活性化剤溶液と銅シード表面上に銅をメッキするのを容易とするための銅シード面の活性化方法を目的とする。活性化剤溶液は、前駆体溶液を少なくとも約９５℃に加熱し、そしてその温度に少なくとも約３０分間維持することにより調製され、ここで、前駆体溶液は、水、塩化物イオン、錫（ＩＩ）イオンおよび、錫（ＩＩ）イオンの錫（ＩＶ）イオンへの酸化を実質的に防止する酸化防止剤からなる。
Patent JP-2006523561-A (JP)
IPC: A61L9/12
Filed: 2003-09-18
Abstract: The casing of the diffuser, in which participates a front half-casing and a rear half-casing (2), defines two cylindrical and coaxial necks, one lower (5) and another upper (12), open to the exterior, so that in the lower neck (5) the neck (6) of the recipient (7) which delivers the air-freshening products is tightly coupled, whilst in the upper neck (12), provided with a peripheral and internal rib (13), the plug is coupled (14), with the possibility of rotation, which is prolonged toward the exterior of the casing forming a manually operated handle (16), and which toward the interior of the casing defines two cylindrical skirts (17), in diametrical opposition, which encompass the wick (8) associated with the recipient (7) and which are capable of confronting in a greater or lesser extent the slatted sectors (10) of the front and rear half-casings (2), so that depending upon the angular position of the plug (14) a larger or smaller passage is established for the surrounding air through the casing, affecting the wick (8).
Patent JP-2006193577-A (JP)
Title: Method for modifying polymer
Inventor: ASHIURA MAKOTO
IPC: C08F8/00
Filed: 2005-01-12
Abstract: <P>PROBLEM TO BE SOLVED: To modify a radically degradable type polymer by introducing a functional group while lowering the molecular weight of the radically degradable type polymer.  <P>SOLUTION: A method for modifying the polymer is characterized as follows. A radical initiator and a compound having a nitroxide radical in the molecule are reacted with the polymer degradable by carbon radicals in the molecule to modify the polymer. Thereby, the molecular weight of the polymer is reduced and an organic group derived from the free radical is introduced into the polymer. The modified polymer is obtained by the method and a rubber composition comprises the modified polymer.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006193357-A (JP)
Title: Hydrogen producing method, polymer material used for the same and hydrogen producing system
Inventor: NIWA YUSUKE
IPC: H01M8/06
Filed: 2005-01-12
Abstract: <P>PROBLEM TO BE SOLVED: To provide a hydrogen producing method for treating a polymer material by a method remarkably low in environmental load, the polymer material used for the same and a hydrogen producing system.  <P>SOLUTION: In the hydrogen producing method, hydrogen is produced by decomposing the polymer material under the activation of a photocatalyst and reducing water. The polymer material is a biodegradable plastic. Microorganisms capable of degrading the polymer material is incorporated in water. The polymer material contains the photocatalyst, has a light absorbing material arranged on the surface and is used in the hydrogen producing method. The photocatalyst to be reacted only by ultraviolet light is arranged in the surface side and the photocatalyst to be reacted by visible light is arranged inside. The hydrogen producing system is provided with a means for bringing the photocatalyst, the polymer material and the water into contact with each other, a means for irradiating with light, a means for separating hydrogen from carbon dioxide gas, a means for recovering hydrogen and a means for recovering carbon dioxide gas.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005203374-A (JP)
Title: Secondary battery
Inventor: KIM YONG-SAM
IPC: H01M50/533
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a secondary battery capable of effectively collecting current from an electrode assembly by stably contacting a current collector to the electrode assembly.  <P>SOLUTION: The secondary battery includes a case 11, a positive electrode plate 21, a negative electrode plate 23 and a separator 13 arranged between the positive electrode plate 21 and the negative electrode plate 23, an electrode assembly 20 mounted in the case 11, a cap assembly 30 airtightly sealing the case 11, a current collector 40 for the positive electrode and a current collector 60 for the negative electrode electrically connected to the positive electrode plate 21 and the negative electrode plate 23 of the electrode assembly 20 respectively, wherein at least one of the current collector 40 for the positive electrode and the current collector 60 for the negative electrode has a plate-shaped main body 41 and a contact portion contacting with the corresponding positive electrode plate 21 or the corresponding negative electrode plate 23 projecting from the main body 41.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006194830-A (JP)
Title: Color bead manufacturing device and method, and bio-analyzing apparatus
Inventor: NAKASO NOBUTAKA
IPC: G03C1/73
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To easily manufacture various kinds of color beads in a bio-analysis without using a kneading process at an accurate composition according to an applied color.  <P>SOLUTION: This manufacturing device of the color bead 13 comprises a coloring section 20 colored by radiating light to a substrate 11 containing organometallic compound 14 that senses the light and colors, filters 22A-22C for intensity control for controlling the intensity and wavelength of the radiated light according to the applied color, a driving section 23, a controller 24 for control, a forming section 30 for forming the bead from the colored substrate 11, and a processing section 50 for sticking material for detection, based on the correspondence relation previously set in the formed bead.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006199723-A (JP)
Title: Liquid detergent composition for automatic washer and washing method using the same
Inventor: YAMAZAKI TAKASHI
IPC: C11D7/60
Filed: 2005-01-18
Abstract: <P>PROBLEM TO BE SOLVED: To obtain a liquid detergent composition for an automatic washer, which has a desired pH for an automatic washer, excellent stability of an alkali metal hypochlorite, low-temperature stability, stability of metal ion sequestering power, cleaning properties, especially reattachment prevention properties, finishing properties and scale formation control ability and contains no surfactant, and to provide a washing method using the composition.  <P>SOLUTION: The detergent composition comprises, as effective components, (A) 0.1-40% by mass of potassium tripolyphosphate, (B) 0.1-20% by mass of sodium tripolyphosphate. (C) 1-20% by mass of potassium silicate having the molar ratio (SiO<SB>2</SB>/K<SB>2</SB>O) of SiO<SB>2</SB>to K<SB>2</SB>O of 0.5-1 and (D) 0.2-3% by mass of an alkali metal hypochlorite calculated as an effective chlorine amount and water. An aqueous solution of the detergent composition prepared in 0.2% by mass according to JIS Z-8802:1984 has pH≥11 at 25°C.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006199615-A (JP)
Title: Ocular function examination drug and method for assaying ocular function using the same
Inventor: MORIMOTO HIROSHI
IPC: G21G4/08
Filed: 2005-01-19
Abstract: <P>PROBLEM TO BE SOLVED: To provide an ocular function examination drug capable of assaying ocular functions including hydatoid issue and retinal cell activity spacially(planarly or three-dimensionally), in high sensitivity and in real time in vivo, and to provide a non-invasive and animal-reusable method for assaying ocular functions.  <P>SOLUTION: The ocular function examination drug contains a substance labeled with extra-short half-time radioactive nuclide. The method for assaying ocular functions comprises the step of administering a subject with the above drug and the step of assaying the radioactivity at the ocular site(s) of the subject by an image analyzer.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006198717-A (JP)
Title: Bearing mounting device
Inventor: TATSUMI RYUICHI
IPC: F16C9/02
Filed: 2005-01-20
Abstract: <P>PROBLEM TO BE SOLVED: To more accurately mount a bearing metal with more simple structure.  <P>SOLUTION: A chucking means 7 and a pushing means 8 are provided on a bearing mounting device 6 for mounting the bearing metal 5 to a bearing recessed part 3 of a journal wall 2. The chucking means 7 holds the both ends of the intermediate part of the bearing metal 5 of half circular shape with a pair of chucking pieces 10, 10, and the bearing metal 5 is temporary set to the inner side of the bearing recessed part 3. The free ends 5a, 5a are pushed by a pushing member 13 in a state where the chucking pieces 10, 10 make the bearing metal 5 free, and the bearing metal 5 is pushed and fixed while elastically deforming the bearing metal 5 into the bearing recessed part 3.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006200077-A (JP)
Title: Safety net for falling of concrete
Inventor: SATO YOSHIFUMI
IPC: D01F6/90
Filed: 2005-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a safety net for the falling of concrete having excellent physical properties such as strength and shock absorbing property and chemical properties such as flame retardancy, weather resistance and chemical resistance and exhibiting extremely small deterioration of the flame retardancy during the practical use of the net.  <P>SOLUTION: The safety net for the falling of concrete has a rhombic mesh pattern and is produced by using a polyamide multifilament fiber having a single fiber fineness of 1.5-100 dtex and a strength of 4.5-10 cN/dtex and containing 0.1-10 wt.% triazine compound as at least a part of the constituent material of the net.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006203743-A (JP)
Title: Tag information verifying method and program
Inventor: OKUBO MIYAKO
IPC: G06K17/00
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To identify whether a reading apparatus has physically processed an objectified tag apparatus surely or not in an automatic identification system using a tag apparatus.  <P>SOLUTION: The tag apparatus transmits tag informations E<SB>m, i-1</SB>, E<SB>m, i</SB>, E<SB>m, i+1</SB>capable of verifying a transmission order from the tag apparatus to the access of the reading apparatus. They are transmitted to a security server apparatus, and the security server apparatus stores the tag informations like these so as to specify their receiving order. The security server apparatus uses each tag information stored there, verifies a relation between the transmission order from these tag apparatuses and the receiving order in the security server apparatus, and verifies a justice of the tag information of the verification object.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006200290-A (JP)
Title: Non open-cut jacking method
Inventor: NISHIKATA NOBUHIRO
IPC: F16L1/024
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide a non open-cut jacking method for preventing a damage of the resin covering a steel pipe under delivery to a construction site and also for preventing exfoliation of the covering resin upon jacking in the ground.  <P>SOLUTION: Resin-covered steel pipes 2a, 2b comprise original pipes 21a, 21b, anticorrosive layers 22a, 22b covering the outer peripheral surfaces thereof, and protective layers 23a, 23b covering the outer peripheral surfaces of the anticorrosive layers 22a, 23b. A heat-shrinkable tube 3 is brought into tight contact with a welded part 24, where end faces of the original pipes 21a, 21b are mutually abutted, and the anticorrosive layers 22a, 22b on both sides of the welded part 24. A resin sleeve 30 longer than a heat-shrinkable tube 3 covers the heat-shrinkable tube 3 and the anticorrosive layers 22a, 22b, and both ends of the resin sleeve 30 are fused to the anticorrosive layers 22a, 22b. Thus, a connected steel pipe 1, in which a plurality of resin-covered steel pipes 2 are connected in the axial direction, is made. The connected steel pipe 1 is led into the ground by a jacking rod 15.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006203771-A (JP)
Title: Image recording apparatus
Inventor: HASHIMOTO YASUNORI
IPC: H04N5/76
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide an image recording apparatus capable of selecting image data stored in a medium without mistake and printing out the image data even when the image data stored in a memory card or a storage medium or the like are subjected to addition or deletion or like processing.  <P>SOLUTION: The image recording apparatus designates the image data stored in the memory card or the storage medium or the like by means of year, month, day, hour, minute and second. In Fig. 1, a caption 101 indicates an operation section, a caption 102 is a control section for controlling the whole recording apparatus and carrying out image processing or the like, a caption 103 depicts a recording section for carrying out image print out, and a caption 104 is a memory card interface to which the memory card is connected.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006201708-A (JP)
Title: Photothermographic material
Inventor: FUKUI YASUTA
IPC: G03C1/498
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide a photothermographic material of a high image quality having reduced unevenness in the color tone of an image and having excellent image preservability.  <P>SOLUTION: Regarding the photothermographic material, the same face of a support is provided with an image forming layer comprising photosensitive silver halide, a nonphotosensitive organic silver salt, a reducing agent and a binder, and a nonphotosensitive layer, and the image forming layer and the nonphotosensitive layer comprise a polymer comprising monomer components expressed by a general formula (M) of CH<SB>2</SB>=CR<SP>01</SP>-CR<SP>02</SP>=CH<SB>2</SB>. The material is characterized in that (1) the reducing agent comprises a compound expressed by a general formula (RO), and (2) specified metal phthalocyanine dyes are comprised.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006204982-A (JP)
Title: Method for manufacturing metallic catalytic carrier and diffusion-bonding tool
Inventor: MOTOHASHI TOSHIYUKI
IPC: F01N3/28
Filed: 2005-01-25
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a metallic catalytic carrier, by which a quadrangular cell can be formed with high precision.  <P>SOLUTION: This method for manufacturing the metallic catalytic carrier comprises the steps of: laminating many corrugated sheets 10 of metallic foil, in each of which a mountain and a valley are continued alternately at a constant pitch, on one another in the thickness direction so that the adjacent corrugated sheets are shifted to each other by half a pitch and butting the tops of opposed mountains of the adjacent corrugated sheets against each other to form a honeycomb laminated body 20 having many quadrangular cells; diffusion-bonding the formed laminated body 20 while pressing the laminated body 20 to the laminated direction of the corrugated sheets by using a tool 30; withdrawing the diffusion-bonded laminated body 20 from the tool 30 and housing the withdrawn laminated body in an outer cylinder 25. The apex angle α of the mountain of the corrugated sheet 10 is made to satisfy 45°≤α<90°.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006208656-A (JP)
Title: Optical frequency comb generating method, optical frequency comb generator, and high density wavelength multiplexing transmission system
Inventor: KOROGI MOTONOBU
IPC: G02F1/03
Filed: 2005-01-27
Abstract: <P>PROBLEM TO BE SOLVED: To generate a multi-wavelength laser with an enlarged channel interval.  <P>SOLUTION: An optical frequency comb generator 12 generates an optical frequency comb with a frequency interval of a modulation frequency fm by modulating a laser beam incident from a laser light source 11 in a Fabry-Perot resonator with a modulation signal of a modulation frequency fm, and generates an optical frequency comb with a frequency interval being the modulation frequency multiplied with an integer with transmission through a Fabry-Perot filter 13 having a free spectral range (FSR) coinciding with the modulation frequency multiplied with an integer.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006204506-A (JP)
Title: Reclining adjuster
Inventor: SAKAMOTO YUTAKA
IPC: A47C1/025
Filed: 2005-01-27
Abstract: <P>PROBLEM TO BE SOLVED: To provide a reclining adjuster for securely locking the turning of a seat back relative to a seat cushion.  <P>SOLUTION: The reclining adjuster 10 includes a lower bracket 12 fixed to the seat cushion, an upper bracket 14 fixed to the seat back and connected to the lower bracket 12 so as to be turned around a shaft 18, a locking mechanism 20 for switching the turning of the upper bracket 14 relative to the lower bracket 12 between a locked state and an unlocked state, and an emergency locking mechanism 44 for preventing the relative rotation between the locking mechanism 20 and the upper bracket 14. In the emergency locking mechanism, when the relative rotation makes cam pins 16C of a disk member 16 press against cam projections 46C of an externally toothed ring gear 46, the externally toothed ring gear 46 intermeshes with both of internal teeth 12D of the lower bracket 12 and internal teeth 14E of the upper bracket 14.  <P>COPYRIGHT: (C)2006,JPO&NCIPI