JP2011044350A - Purged gas treatment system of fuel cell for vehicle auxiliary machine power supply - Google Patents

Purged gas treatment system of fuel cell for vehicle auxiliary machine power supply Download PDF

Info

Publication number
JP2011044350A
JP2011044350A JP2009192215A JP2009192215A JP2011044350A JP 2011044350 A JP2011044350 A JP 2011044350A JP 2009192215 A JP2009192215 A JP 2009192215A JP 2009192215 A JP2009192215 A JP 2009192215A JP 2011044350 A JP2011044350 A JP 2011044350A
Authority
JP
Japan
Prior art keywords
hydrogen gas
fuel cell
engine
gas
purged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2009192215A
Other languages
Japanese (ja)
Other versions
JP5509726B2 (en
Inventor
Shigeaki Kurita
茂明 栗田
Atsushi Mori
淳 森
Ryoma Nishimura
怜馬 西村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Priority to JP2009192215A priority Critical patent/JP5509726B2/en
Publication of JP2011044350A publication Critical patent/JP2011044350A/en
Application granted granted Critical
Publication of JP5509726B2 publication Critical patent/JP5509726B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Fuel Cell (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To properly treat purged hydrogen gas without requiring any special apparatus, and without directly discharging the purged hydrogen gas into the air. <P>SOLUTION: A hydrogen-gas purging line 19 is formed to discharge the purged hydrogen gas when the hydrogen gas in a fuel cell 13 is purged, in the fuel cell 13 for a vehicle auxiliary machine power supply which generates power using the hydrogen gas. The hydrogen-gas purging line 19 is connected to the breathing line 14 of an engine 11 for driving the vehicle. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、車両補機電源用燃料電池のパージガス処理システムに関する。   The present invention relates to a purge gas processing system for a fuel cell for a vehicle auxiliary power source.

図４に示すように、燃料電池４０は、燃料電池本体４１のセル内で水素ガスと空気中の酸素とを反応させて発電するものである（特許文献１及び２等参照）。例えば、燃料電池４０は、車両補機（図示例では、ランプ）４２に電力を供給する車両補機電源として使用される。   As shown in FIG. 4, the fuel cell 40 generates power by reacting hydrogen gas with oxygen in the air in the cells of the fuel cell main body 41 (see Patent Documents 1 and 2, etc.). For example, the fuel cell 40 is used as a vehicle auxiliary power source that supplies power to a vehicle auxiliary machine (lamp in the illustrated example) 42.

例えば、水素ガスは水素ボンベ４３に貯留され、水素ボンベ４３に貯留された水素ガスが所定圧力まで減圧された後に燃料電池本体４１のセル内に供給される。一方、空気は、図示しないコンプレッサ等を用いて燃料電池本体４１のセル内に供給される。   For example, hydrogen gas is stored in the hydrogen cylinder 43, and the hydrogen gas stored in the hydrogen cylinder 43 is supplied to the cells of the fuel cell body 41 after being depressurized to a predetermined pressure. On the other hand, the air is supplied into the cells of the fuel cell main body 41 using a compressor or the like (not shown).

上述のような燃料電池４０では、発電性能の低下を抑制するために、定期的に燃料電池本体４１のセル内に滞留した水素ガスをパージする必要がある。このとき、従来の燃料電池４０では、パージした水素ガスを水素ガスパージライン４４を通じて大気中に放出していた。   In the fuel cell 40 as described above, it is necessary to periodically purge the hydrogen gas staying in the cells of the fuel cell main body 41 in order to suppress a decrease in power generation performance. At this time, in the conventional fuel cell 40, the purged hydrogen gas is released into the atmosphere through the hydrogen gas purge line 44.

しかし、水素ガスを大気中に放出すると、放出した水素ガスに引火する危険などがある。そのため、パージした水素ガスを酸化触媒を用いて処理（燃焼）する処理方法や、パージした水素ガスを窒素ガス等の不活性ガスにより処理（希釈化）する処理方法などが行われている。   However, when hydrogen gas is released into the atmosphere, there is a risk of ignition of the released hydrogen gas. Therefore, a processing method for processing (burning) the purged hydrogen gas using an oxidation catalyst, a processing method for processing (dilution) the purged hydrogen gas with an inert gas such as nitrogen gas, and the like are performed.

特開２００３−７７４８４号公報JP 2003-77484 A 特開２００５−１５８５５４号公報JP 2005-158554 A

しかし、酸化触媒を用いる処理方法は酸化触媒が高価であり、不活性ガスによる処理方法は水素ガスを貯留する水素ボンベとは別に不活性ガスを貯留するボンベを用意しなくてはならず、いずれの方法も特別な装置を必要とする。   However, in the treatment method using an oxidation catalyst, the oxidation catalyst is expensive, and in the treatment method using an inert gas, a cylinder for storing the inert gas must be prepared separately from the hydrogen cylinder for storing the hydrogen gas. This method also requires special equipment.

そこで、本発明の目的は、特別な装置を必要とすることなく、且つパージした水素ガスをそのまま大気中に放出することなく、パージした水素ガスを適切に処理することにある。   Accordingly, an object of the present invention is to appropriately process the purged hydrogen gas without requiring a special apparatus and without releasing the purged hydrogen gas into the atmosphere as it is.

上記目的を達成するために、本発明は、水素ガスを用いて発電する車両補機電源用の燃料電池に、該燃料電池内の水素ガスをパージするときにパージした水素ガスが排出される水素ガスパージラインを設け、該水素ガスパージラインを、車両駆動用のエンジンの吸気ラインに接続した車両補機電源用燃料電池のパージガス処理システムである。   In order to achieve the above object, the present invention is directed to a fuel cell for an auxiliary vehicle power source that generates power using hydrogen gas, in which the purged hydrogen gas is discharged when purging the hydrogen gas in the fuel cell. A purge gas processing system for a fuel cell for a vehicle auxiliary power supply, in which a gas purge line is provided and the hydrogen gas purge line is connected to an intake line of an engine for driving a vehicle.

本発明によれば、特別な装置を必要とすることなく、且つパージした水素ガスをそのまま大気中に放出することなく、パージした水素ガスを適切に処理することができるという優れた効果を奏する。   According to the present invention, there is an excellent effect that the purged hydrogen gas can be appropriately processed without requiring a special apparatus and without releasing the purged hydrogen gas into the atmosphere as it is.

図１は、本発明の一実施形態に係る車両補機電源用燃料電池のパージガス処理システムの概略図である。FIG. 1 is a schematic diagram of a purge gas processing system for a fuel cell for a vehicle auxiliary power source according to an embodiment of the present invention. 図２は、ガスパージを実行する間隔の一例を示す図である。FIG. 2 is a diagram illustrating an example of an interval at which the gas purge is executed. 図３は、ガスパージ時のエンジン始動ロジックを示す図である。FIG. 3 is a diagram showing an engine start logic at the time of gas purge. 図４は、従来の燃料電池の概略図である。FIG. 4 is a schematic view of a conventional fuel cell.

以下、本発明の好適な実施形態を添付図面に基づいて詳述する。   Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

本実施形態に係る車両補機電源用燃料電池のパージガス処理システム１０は、図示しない車両（例えば、商業車）に搭載されるものである。   A purge gas processing system 10 for a fuel cell for a vehicle auxiliary power supply according to this embodiment is mounted on a vehicle (not shown) (for example, a commercial vehicle).

本実施形態では、車両には、車両を駆動する車両駆動用のエンジン（例えば、ディーゼルエンジン）１１と、車両補機（図示例では、ランプ）１２に電力を供給する車両補機電源用の燃料電池１３とが搭載される。   In the present embodiment, the vehicle includes a fuel for a vehicle auxiliary power source that supplies electric power to a vehicle driving engine (for example, a diesel engine) 11 that drives the vehicle and a vehicle auxiliary device (a lamp in the illustrated example) 12. A battery 13 is mounted.

本実施形態に係るエンジン１１には、エンジン１１に吸気を供給する吸気ライン１４と、エンジン１１から排気ガスを排出する排気ライン１５とが設けられる。   The engine 11 according to the present embodiment is provided with an intake line 14 that supplies intake air to the engine 11 and an exhaust line 15 that exhausts exhaust gas from the engine 11.

本実施形態においては、吸気は、吸気ライン１４に設けられたエアクリーナ１６等を通って、エンジン１１内に導入される。一方、エンジン１１内で発生した排気ガスは、サイレンサ１７等を通って大気中に排出される。   In the present embodiment, the intake air is introduced into the engine 11 through an air cleaner 16 or the like provided in the intake line 14. On the other hand, the exhaust gas generated in the engine 11 is discharged into the atmosphere through the silencer 17 and the like.

本実施形態に係る燃料電池１３は、水素ガスと空気中の酸素とを反応させて発電するものである。本実施形態に係る燃料電池１３には、少なくとも、燃料電池１３に供給する水素ガスを貯留する水素ボンベ１８が接続される。   The fuel cell 13 according to the present embodiment generates power by reacting hydrogen gas with oxygen in the air. At least a hydrogen cylinder 18 that stores hydrogen gas supplied to the fuel cell 13 is connected to the fuel cell 13 according to the present embodiment.

本実施形態においては、水素ガスは、図示しない減圧手段（減圧弁等）によって所定圧力まで減圧された後に燃料電池１３のセル内に供給される。一方、空気は、図示しない昇圧手段（コンプレッサ等）を用いて所定圧力まで昇圧された後に燃料電池１３のセル内に供給される。   In the present embodiment, the hydrogen gas is supplied into the cells of the fuel cell 13 after being reduced to a predetermined pressure by a decompression unit (such as a decompression valve) not shown. On the other hand, the air is boosted to a predetermined pressure using a boosting means (compressor or the like) (not shown) and then supplied into the cells of the fuel cell 13.

本実施形態では、発電性能の低下を抑制するために、発電に用いられる水素ガスの流量よりも多量の水素ガスを燃料電池１３のセル内に供給して、燃料電池１３のセル内に滞留した水素ガスをパージするガスパージを定期的に実行するようになっている。   In this embodiment, in order to suppress a decrease in power generation performance, a larger amount of hydrogen gas than the flow rate of hydrogen gas used for power generation is supplied into the cells of the fuel cell 13 and stays in the cells of the fuel cell 13. Gas purging for purging hydrogen gas is performed periodically.

また、本実施形態では、燃料電池１３に、ガスパージ時にパージした水素ガスが排出される水素ガスパージライン１９を設け、水素ガスパージライン１９を、エンジン１１の吸気ライン１４に接続している。さらに、本実施形態では、燃料電池１３の水素ガスパージライン１９とエンジン１１の吸気ライン１４との合流部に所定容積を有する混合部２０を設けている。   In the present embodiment, the fuel cell 13 is provided with a hydrogen gas purge line 19 through which the hydrogen gas purged during the gas purge is discharged, and the hydrogen gas purge line 19 is connected to the intake line 14 of the engine 11. Further, in the present embodiment, a mixing unit 20 having a predetermined volume is provided at the junction of the hydrogen gas purge line 19 of the fuel cell 13 and the intake line 14 of the engine 11.

上記の水素ガスパージライン１９をエンジン１１の吸気ライン１４に接続することで、パージした水素ガスをエンジン１１の吸気ライン１４へ送り込み、エンジン１１内で燃焼させることが可能となる。   By connecting the hydrogen gas purge line 19 to the intake line 14 of the engine 11, the purged hydrogen gas can be sent to the intake line 14 of the engine 11 and combusted in the engine 11.

ガスパージを実行する間隔の一例を図２に示す。図２に示すように、通常の発電時には、燃料電池１３の出力に応じた流量（Ｆ１〜Ｆ６）の水素ガスが燃料電池１３のセル内に供給される。発電に用いられる水素ガスの流量（Ｆ１〜Ｆ６）は、燃料電池１３の出力が高くなるほど多くなるように設定される。また、ガスパージ時には、発電に用いられる水素ガスの流量（Ｆ１〜Ｆ６）にそれぞれ所定流量（ΔＬ１〜ΔＬ６）を足した流量の水素ガスが燃料電池１３のセル内に供給される。さらに、ガスパージの実行間隔（Ｔ１〜Ｔ６）は、燃料電池１３の出力が高くなるほど短くなるように設定される。   An example of the interval at which the gas purge is executed is shown in FIG. As shown in FIG. 2, during normal power generation, hydrogen gas at a flow rate (F1 to F6) corresponding to the output of the fuel cell 13 is supplied into the cells of the fuel cell 13. The flow rate (F1 to F6) of hydrogen gas used for power generation is set to increase as the output of the fuel cell 13 increases. Further, at the time of gas purge, hydrogen gas having a flow rate obtained by adding a predetermined flow rate (ΔL1 to ΔL6) to the flow rate of hydrogen gas (F1 to F6) used for power generation is supplied into the cells of the fuel cell 13. Furthermore, the gas purge execution interval (T1 to T6) is set to be shorter as the output of the fuel cell 13 is higher.

また、本実施形態では、パージした水素ガスをエンジン１１に吸引させて処理するため、ガスパージを行う際にはエンジン１１の作動状況（作動の有無）を監視しておく。車両の停止中にエンジン１１がアイドリングストップ等されていると、パージした水素ガスをエンジン１１に吸引させることができないからである。具体的には、図３に示すように、ガスパージを行う前にエンジン１１が作動中か否かを判定し（ステップＳ１）、エンジン１１が作動中でない場合は、エンジン１１を始動（ステップＳ２）した後、ガスパージ（ステップＳ３）を行うようにしている。一方、ガスパージを行う前にエンジン１１が作動中か否かを判定し（ステップＳ１）、エンジン１１が作動中である場合は、そのままガスパージ（ステップＳ３）を行うこととしている。   Further, in the present embodiment, the purged hydrogen gas is sucked into the engine 11 for processing, and therefore, the operating state (presence / absence of operation) of the engine 11 is monitored when performing the gas purge. This is because if the engine 11 is idling stopped while the vehicle is stopped, the purged hydrogen gas cannot be sucked into the engine 11. Specifically, as shown in FIG. 3, it is determined whether or not the engine 11 is operating before performing the gas purge (step S1). If the engine 11 is not operating, the engine 11 is started (step S2). After that, a gas purge (step S3) is performed. On the other hand, before performing the gas purge, it is determined whether or not the engine 11 is in operation (step S1). If the engine 11 is in operation, the gas purge (step S3) is performed as it is.

以上要するに、本実施形態によれば、水素ガスを用いて発電する車両補機電源用の燃料電池１３に、燃料電池１３内の水素ガスをパージするときにパージした水素ガスが排出される水素ガスパージライン１９を設け、水素ガスパージライン１９を、車両駆動用のエンジン１１の吸気ライン１４に接続したので、パージした水素ガスを車両駆動用のエンジン１１に吸引させて、エンジン１１内で燃焼させることができ、パージした水素ガスをそのまま大気中に放出することなく適切に処理することが可能となる。   In short, according to the present embodiment, the hydrogen gas purge in which the purged hydrogen gas is discharged when purging the hydrogen gas in the fuel cell 13 to the fuel cell 13 for the vehicle auxiliary machine power source that generates power using the hydrogen gas. Since the line 19 is provided and the hydrogen gas purge line 19 is connected to the intake line 14 of the engine 11 for driving the vehicle, the purged hydrogen gas can be sucked into the engine 11 for driving the vehicle and burned in the engine 11. Thus, the purged hydrogen gas can be appropriately processed without being released into the atmosphere as it is.

また、本実施形態では、パージした水素ガスを車両駆動用のエンジン１１を用いて処理しているので、パージした水素ガスを処理するための専用の特別な装置を必要としない。   In this embodiment, the purged hydrogen gas is processed using the engine 11 for driving the vehicle, so that a special device dedicated to processing the purged hydrogen gas is not required.

以上、本発明の好適な実施形態について説明したが、本発明は上記実施形態には限定されず他の様々な実施形態を採ることが可能である。   The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various other embodiments can be adopted.

例えば、上記の実施形態ではエンジン１１がディーゼルエンジンであるとしたがこれには限定はされず、エンジン１１がガソリンエンジンであっても良い。   For example, in the above embodiment, the engine 11 is a diesel engine. However, the present invention is not limited to this, and the engine 11 may be a gasoline engine.

また、水素ガスパージライン１９に、水素ガスパージライン１９を開閉する開閉弁手段（開閉弁等）を設けて、この開閉弁手段によってガスパージ時にのみ水素ガスパージライン１９を開くようにしても良い。さらに、水素ガスパージライン１９に、エンジン１１の吸気が水素ガスパージライン１９側に逆流するのを防止するための逆止弁手段（逆止弁等）を設けても良い。   Further, the hydrogen gas purge line 19 may be provided with an opening / closing valve means (such as an opening / closing valve) for opening and closing the hydrogen gas purge line 19, and the hydrogen gas purge line 19 may be opened only during the gas purge by the opening / closing valve means. Further, the hydrogen gas purge line 19 may be provided with check valve means (such as a check valve) for preventing the intake air of the engine 11 from flowing back to the hydrogen gas purge line 19 side.

１０ パージガス処理システム
１１ エンジン
１３ 燃料電池
１９ 水素ガスパージライン 10 Purge gas processing system 11 Engine 13 Fuel cell 19 Hydrogen gas purge line

Claims (1)

水素ガスを用いて発電する車両補機電源用の燃料電池に、該燃料電池内の水素ガスをパージするときにパージした水素ガスが排出される水素ガスパージラインを設け、該水素ガスパージラインを、車両駆動用のエンジンの吸気ラインに接続したことを特徴とする車両補機電源用燃料電池のパージガス処理システム。   A fuel cell for a vehicle auxiliary power source that generates power using hydrogen gas is provided with a hydrogen gas purge line for discharging the purged hydrogen gas when purging the hydrogen gas in the fuel cell. A purge gas treatment system for a fuel cell for a vehicle auxiliary machine power supply, characterized in that the purge gas treatment system is connected to an intake line of a driving engine.
JP2009192215A 2009-08-21 2009-08-21 Purge gas processing system for fuel cell for vehicle auxiliary power supply Expired - Fee Related JP5509726B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009192215A JP5509726B2 (en) 2009-08-21 2009-08-21 Purge gas processing system for fuel cell for vehicle auxiliary power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009192215A JP5509726B2 (en) 2009-08-21 2009-08-21 Purge gas processing system for fuel cell for vehicle auxiliary power supply

Publications (2)

Publication Number Publication Date
JP2011044350A true JP2011044350A (en) 2011-03-03
JP5509726B2 JP5509726B2 (en) 2014-06-04

Family

ID=43831619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009192215A Expired - Fee Related JP5509726B2 (en) 2009-08-21 2009-08-21 Purge gas processing system for fuel cell for vehicle auxiliary power supply

Country Status (1)

Country Link
JP (1) JP5509726B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004517442A (en) * 2000-12-16 2004-06-10 バイエリッシェ　モートーレン　ウエルケ　アクチエンゲゼルシャフト Fuel cell system in vehicle with internal combustion engine and method of operating the same
JP2006207412A (en) * 2005-01-26 2006-08-10 Tokyo Gas Co Ltd Premixing compression self ignition engine and combined power generation system using the same
JP2007073455A (en) * 2005-09-09 2007-03-22 Nissan Motor Co Ltd Abnormality detection method of fuel cell system
JP2008180131A (en) * 2007-01-24 2008-08-07 Yanmar Co Ltd Composite power generation facility

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004517442A (en) * 2000-12-16 2004-06-10 バイエリッシェ　モートーレン　ウエルケ　アクチエンゲゼルシャフト Fuel cell system in vehicle with internal combustion engine and method of operating the same
JP2006207412A (en) * 2005-01-26 2006-08-10 Tokyo Gas Co Ltd Premixing compression self ignition engine and combined power generation system using the same
JP2007073455A (en) * 2005-09-09 2007-03-22 Nissan Motor Co Ltd Abnormality detection method of fuel cell system
JP2008180131A (en) * 2007-01-24 2008-08-07 Yanmar Co Ltd Composite power generation facility

Also Published As

Publication number Publication date
JP5509726B2 (en) 2014-06-04

Similar Documents

Publication Publication Date Title
WO2016031219A1 (en) Gas turbine engine system
KR100986473B1 (en) Device for removing exhaust hydrogen of fuel cell system
JP2009197728A (en) Exhaust emission control device of internal combustion engine
WO2006049299A1 (en) Fuel cell system
KR20160146924A (en) Method for exhaust gas aftertreatment and combustion system
JP5794819B2 (en) Fuel cell / gas turbine combined power generation system and method for stopping the fuel cell
JP2008533656A (en) Reformer, fuel cell system, and method of operating fuel cell system
CN110416577B (en) Fuel cell air circuit, air extraction device control method and controller
JP5509726B2 (en) Purge gas processing system for fuel cell for vehicle auxiliary power supply
JP2007016641A (en) Hybrid system
JP2004179080A (en) Fuel supply device of fuel cell
JP4825125B2 (en) Method of purging hydrogen at startup of fuel cell system
JP2007317469A (en) Fuel cell system and fuel cell control apparatus
JP2007154795A (en) Egr device for internal combustion engine
JP5620696B2 (en) Exhaust purification device
JP5504770B2 (en) Hydrogen off-gas treatment system for fuel cells
JP5509735B2 (en) Hydrogen gas aftertreatment system for fuel cell for vehicle auxiliary power supply
JP2011085086A (en) Exhaust emission control device
JP2005158432A (en) Fuel cell system
JP2015121151A (en) Internal combustion engine system
JP2003222018A (en) Exhaust emissions purification apparatus for internal combustion engine
JP2007173060A (en) Fuel cell system
JP2010174858A (en) Exhaust emission control device of internal combustion engine
JP2006125269A (en) Exhaust emission control device
JP2014134158A (en) Gas engine exhaust device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120705

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130904

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130910

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140225

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140310

R150 Certificate of patent or registration of utility model

Ref document number: 5509726

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees