JP2006009530A - Underground tank structure - Google Patents

Underground tank structure Download PDF

Info

Publication number
JP2006009530A
JP2006009530A JP2004192173A JP2004192173A JP2006009530A JP 2006009530 A JP2006009530 A JP 2006009530A JP 2004192173 A JP2004192173 A JP 2004192173A JP 2004192173 A JP2004192173 A JP 2004192173A JP 2006009530 A JP2006009530 A JP 2006009530A
Authority
JP
Japan
Prior art keywords
shelf
plate
underground tank
side wall
underground
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
JP2004192173A
Other languages
Japanese (ja)
Other versions
JP4328267B2 (en
Inventor
Taisuke Nakamura
中村泰介
Hiromasa Kudo
工藤博正
Hiroaki Takagi
高木宏彰
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.)
Taisei Corp
Original Assignee
Taisei Corp
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 Taisei Corp filed Critical Taisei Corp
Priority to JP2004192173A priority Critical patent/JP4328267B2/en
Publication of JP2006009530A publication Critical patent/JP2006009530A/en
Application granted granted Critical
Publication of JP4328267B2 publication Critical patent/JP4328267B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To effectively utilize the weight of banking on the ground as resistance to uplift pressure applied to an underground tank. <P>SOLUTION: The underground tank is composed of a sidewall, a bottom plate, a roof, and an underground wall installed at the outer periphery of the sidewall. A shelf board is provided at the upper end of the underground wall toward the outer peripheral direction. A part of a top plate is placed on the shelf board, and the other part is installed projecting outward from the shelf board. Banking is mounted on the top plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、地下タンクの構造に関するものである。   The present invention relates to a structure of an underground tank.

LNGやLPG等の低温液化ガス等を貯蔵する目的として、地盤内に大型の地下タンクを構築する場合がある。
地下水位が高い場合には地下タンクの底板には地下水により上向きの力である揚圧力が作用する。
そのため、地下タンクの浮き上がりを防止する構造を備える必要性がある。
その例として、側壁a、底版bとからなるタンクの側壁aの外周に連壁cを設け、連壁cの頂部に外周方向へ向けて棚板dを突設した構成が知られている。(図6)
この連壁cの上部に棚板dを設け、その上に盛土を行ってこの盛土を重量として利用する構成が知られている。
あるいは棚板dを設けず、側壁、底版および連壁の重量により、揚圧力に抵抗している施工例もある。
In order to store low-temperature liquefied gas such as LNG and LPG, a large underground tank may be constructed in the ground.
When the groundwater level is high, the bottom plate of the underground tank is subjected to uplift pressure, which is an upward force, due to the groundwater.
Therefore, it is necessary to provide a structure that prevents the underground tank from floating.
As an example, there is known a configuration in which a continuous wall c is provided on the outer periphery of a side wall a of a tank including a side wall a and a bottom plate b, and a shelf plate d is projected from the top of the continuous wall c toward the outer peripheral direction. (Fig. 6)
There is known a configuration in which a shelf plate d is provided on the upper part of the continuous wall c, and embankment is performed thereon to use the embankment as a weight.
Alternatively, there is a construction example in which the shelf plate d is not provided and the lifting pressure is resisted by the weight of the side wall, the bottom plate, and the continuous wall.

特開2000−170185号公報JP 2000-170185 A

前記したような従来の地下タンクの構造にあっては、次のような問題点が存在する。
<1> 連壁の頂部の外周に棚板を張り出し、この棚板へ盛土を行う構造では、一般的に連壁は側壁に比べ壁厚が薄いため(半分程度)、盛土量が多い場合や張り出しが大きい場合、盛土による曲げモーメンにより連壁自身が応力的に厳しくなり制約があった。
<2> 連壁だけでなく、側壁の頂部を外側へ張り出す構成も知られているが、張り出した部分は片持ち梁となり、多量の鉄筋による補強が必要となる。
<3> 側壁、底版の重量をカウンターウエイトとして揚圧力に対する抵抗力とする構造では、地下タンクの側壁、底版の重量を増加させる必要性があり、大きなコンクリート体積、鉄筋量を増加させる等、地下タンクの構造を物質貯蔵の耐力以上の構造を要求することになり、施工上、高コストになり、不経済であった。
The conventional underground tank structure as described above has the following problems.
<1> In a structure in which a shelf is projected on the outer periphery of the top of the continuous wall and embankment is applied to this shelf, the wall is generally thinner than the side wall (about half), so there is a large amount of embankment. When the overhang is large, the bending wall due to the embankment causes the wall itself to become severer in terms of stress and is restricted.
<2> Not only the continuous wall but also a configuration in which the top part of the side wall is projected outward is known, but the projecting part becomes a cantilever beam, which requires reinforcement by a large amount of reinforcing bars.
<3> In the structure in which the weight of the side wall and bottom slab is used as a counterweight and resistance to lifting pressure, it is necessary to increase the weight of the side wall and bottom slab of the underground tank. The structure of the tank is required to be more than the material storage capacity, which is expensive in construction and uneconomical.

上記のような課題を解決するために、本発明の地下タンクは、側壁と、底板と、屋根と、側壁の外周に設置した地下壁とによって構成した地下タンクにおいて、地下壁の上端に、外周方向に向けて設けた棚板と、棚板と分離した板体であって、一部を棚板の上に載置し、それ以外の部分を棚板よりも外側へ張り出して載置した天板と、天板の上に搭載した盛土によって構成した地下タンクの構造を特徴とするものである。
また本発明の地下タンクは、側壁と、底板と、屋根と、側壁の外周に設置した地下壁とによって構成した地下タンクにおいて、地下壁の上端に、外周方向に向けて設けた棚板と、棚板から離れた位置に設置した独立支点と、棚板と分離した板体であって、一部を棚板の上に載置し、一部を独立支点に載置した天板と、天板の上に搭載した盛土によって構成した地下タンクの構造を特徴とするものである。
In order to solve the above problems, the underground tank of the present invention is an underground tank constituted by a side wall, a bottom plate, a roof, and an underground wall installed on the outer periphery of the side wall. A shelf plate provided in the direction and a plate body separated from the shelf plate, a part of which is placed on the shelf board and the other part of the ceiling plate that is placed outside the shelf board. It is characterized by the structure of an underground tank composed of a plate and embankment mounted on the top plate.
The underground tank of the present invention is a basement tank constituted by a side wall, a bottom plate, a roof, and a basement wall installed on the outer periphery of the side wall, and a shelf plate provided in the outer peripheral direction at the upper end of the basement wall, An independent fulcrum installed at a position away from the shelf, and a plate separated from the shelf, a part of which is placed on the shelf and a part of which is placed on the independent fulcrum. It is characterized by the structure of an underground tank constructed by embankments mounted on a board.

本発明の地下タンクの構造は上記した課題を解決するための手段を採用することによって、次のような効果を得ることができる。
<1> 側壁から外周方向へ向けて張り出した棚板の上に、棚板から独立した天板を載置してあり、この天板の上に搭載した盛土が荷重として側壁に作用する。そのため、揚圧力に対する抵抗として、天板の上の盛土の重量を有効に活用することができる。
<2> 連壁の頂部から張り出した棚板と、天板とを別々の独立した構造とするために、連壁の頂部には鉛直力のみが作用するために形状を小さくすることができる。そのために補強の鉄筋を大幅に減らすことができる。
<3> 天板は盛土の重量によって転倒することがないから、鉄筋の量をさらに低減することができる。
<4> 特に連壁から離れた位置に独立して支点を設け、この支点で天板の一部を支持すれば、天板の厚さを薄くすることができ、より鉄筋量を減らすことができる。
<5> 揚圧力に対する抵抗力としての側壁や底版、あるいは連壁をうすくして、コンクリート量を削減することが可能となる。
<6> 側壁の壁厚がうすくなると、低温タンクでは特有の温度応力が減少し、鉄筋量を低減することも可能となる。
The structure of the underground tank of the present invention can obtain the following effects by adopting means for solving the above-described problems.
<1> A top plate independent of the shelf plate is placed on a shelf plate that protrudes from the side wall in the outer peripheral direction, and the embankment mounted on the top plate acts on the side wall as a load. Therefore, the weight of the embankment on the top plate can be effectively utilized as the resistance against the lifting pressure.
<2> In order to make the shelf board and the top plate that protrude from the top of the continuous wall have separate and independent structures, only the vertical force acts on the top of the continuous wall, so that the shape can be reduced. Therefore, the reinforcing steel bars can be greatly reduced.
<3> Since the top plate does not fall down due to the weight of the embankment, the amount of reinforcing bars can be further reduced.
<4> In particular, if a fulcrum is provided independently at a position away from the continuous wall and a part of the top plate is supported by this fulcrum, the thickness of the top plate can be reduced and the amount of reinforcing bars can be further reduced. it can.
<5> It is possible to reduce the amount of concrete by thinning the side wall, bottom plate, or continuous wall as resistance to lifting pressure.
<6> When the wall thickness of the side wall is reduced, the temperature stress peculiar to the low temperature tank is reduced, and the amount of reinforcing bars can be reduced.

以下、図面を参照しながら本発明の実施の形態について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1>地下タンクの全体構成(図1)
地下タンク1は側壁2と底版3と屋根板4とによって構成している密閉状の構造体である。
屋根板4は、コンクリート製および鋼製など各種の材料を採用することができる。
<1> Overall structure of underground tank (Fig. 1)
The underground tank 1 is a sealed structure composed of a side wall 2, a bottom slab 3, and a roof plate 4.
The roof plate 4 can employ various materials such as concrete and steel.

<2>連壁の構築。
地下タンクの掘削に先だって、側壁2の周囲に連壁5を設ける。
ここに連壁5とは、タンク1本体の掘削に先立って、地盤の崩壊を防止するための壁体である。
この連壁5の構築方法は公知であるが、まず地中に溝を掘削する。
この溝の内部に鉄筋の篭を設置し、その後にコンクリートを打設して構築するものである。
この連壁5の構築方法は従来から多数の工法が広く知られている。
本発明の連壁5では、特に連壁5の上端には、地下タンク1外側へ向けて棚状に板を張り出して棚板6を一体に形成する。
この棚板6によって後述する天板7の一部を支持するものである。
なおこの棚板6は、円周方向に連続して取り付けても、あるいは間隔を介在させて取り付けても本発明の目的を達成できる。
<2> Construction of continuous walls.
Prior to excavation of the underground tank, a continuous wall 5 is provided around the side wall 2.
Here, the continuous wall 5 is a wall body for preventing the ground from collapsing prior to excavation of the tank 1 body.
Although the construction method of this connection wall 5 is well-known, a trench is first excavated in the ground.
A steel bar is installed inside the groove, and then concrete is cast.
As a method for constructing the continuous wall 5, a number of methods have been widely known.
In the continuous wall 5 of the present invention, in particular, at the upper end of the continuous wall 5, a shelf 6 is integrally formed by extending a plate in a shelf shape toward the outside of the underground tank 1.
A part of a top plate 7 to be described later is supported by the shelf plate 6.
Note that the shelf plate 6 can achieve the object of the present invention even if it is attached continuously in the circumferential direction, or is attached with an interval.

<3>タンク1の構築。
連壁5で包囲された空間を掘削してタンク1を構築する。
周囲が連壁5で包囲してあるから、掘削によっても周囲の土砂が崩壊することはない。
底部まで掘削が終了したら、底版3、側壁2のコンクリートを打設して地下タンク1を構築する。
その場合に、地下タンク1の側壁2の外側面は、事前に構築してある連壁5の内側面と接触させて構築する。
さらに、側壁2と連壁5との面に互いに咬みあうせん断伝達機構を採用することもできる。
そのために例えば、側壁2の連壁5側の面には、所定の間隔、所定高さの凸部を形成し、一方、連壁5の側壁2側の面には、側壁2に設けた凸状部分とかみ合う凹状に形成することもできる。
この凹凸の噛み合わせにより、連壁5の重量をこの部分の摩擦抵抗を通じて側壁2へ伝えることになる。
<3> Construction of tank 1
The tank 1 is constructed by excavating the space surrounded by the continuous wall 5.
Since the surroundings are surrounded by the continuous wall 5, the surrounding earth and sand will not collapse even by excavation.
When excavation to the bottom is completed, the underground tank 1 is constructed by placing concrete on the bottom plate 3 and the side wall 2.
In that case, the outer side surface of the side wall 2 of the underground tank 1 is constructed in contact with the inner side surface of the continuous wall 5 constructed in advance.
Furthermore, it is possible to employ a shear transmission mechanism that bites the surfaces of the side wall 2 and the continuous wall 5 with each other.
For this purpose, for example, a convex portion having a predetermined interval and a predetermined height is formed on the surface of the side wall 2 on the side wall 5 side, while a convex portion provided on the side wall 2 is formed on the side surface of the side wall 2 on the side wall 2 side. It can also be formed in a concave shape that meshes with the shaped portion.
By engaging the unevenness, the weight of the continuous wall 5 is transmitted to the side wall 2 through the frictional resistance of this portion.

<4>天板7。
この棚板6の上には、天板7を載置する。
この天板7は、棚板6とは分離した鉄筋コンクリート製の板体である。
天板7は、全体を棚板6の上に載置するのではなく、一部を棚板6の上に載置し、他の一部は棚板6よりも外側へ張り出した状態で載置する。
すなわち天板7は、棚板載置部71と、張り出し部72とによって構成する。
<4> Top plate 7.
A top plate 7 is placed on the shelf plate 6.
The top plate 7 is a reinforced concrete plate separated from the shelf 6.
The top plate 7 is not placed entirely on the shelf plate 6, but a part thereof is placed on the shelf plate 6 and the other portion is placed in a state of projecting outward from the shelf plate 6. Put.
That is, the top plate 7 is constituted by the shelf board placing part 71 and the overhang part 72.

<5>盛土重量の支持。
天板7の上には土を運んで盛りあげて盛土8を行う。
天板7は棚板6への載置部71と、張り出し部72とによって形成してある。
そのために、載置部71の上に搭載した盛土8の重量P1を、張り出し部72の上に搭載した盛土8の重量P2よりも大きくなるように天板7の寸法を定める。
もし反対に載置部71の上に搭載した盛土8の重量P1を、張り出し部72の上に搭載した盛土8の重量P2よりも小さくなるような天板7の寸法であると、図に示すように天板7にはタンク1から離れる側(外側)の先端が沈み込むような力が作用するからである。
<5> Support for embankment weight.
The soil is carried on the top plate 7 and raised, and the filling 8 is performed.
The top plate 7 is formed by a placement portion 71 on the shelf plate 6 and an overhang portion 72.
Therefore, the dimension of the top plate 7 is determined so that the weight P1 of the embankment 8 mounted on the placing portion 71 is larger than the weight P2 of the embankment 8 mounted on the overhanging portion 72.
On the other hand, if the weight P1 of the embankment 8 mounted on the mounting portion 71 is smaller than the weight P2 of the embankment 8 mounted on the overhanging portion 72, the dimension of the top plate 7 is shown in the figure. This is because the top plate 7 is subjected to such a force that the tip on the side (outside) away from the tank 1 sinks.

<6>独立支点9の形成。
棚板6から離れた位置に独立支点9を設けると天板7の長さをさらに長くでき、その上に搭載した盛土8によって大きい重量を得ることができる。
独立支点9は、例えば棚板6から離れた外側にコンクリート製の梁を構築することによって得ることができる。
さらに、棚板6から一定の距離だけ離れた位置に基礎杭91を設置し、この基礎杭91に天板7の一部を載置させる構成を採用することもできる。
基礎杭91によって天板7に一端を支持すれば、天板7の変形を抑制しかつ支点9の沈下を小さくすることができる。
<6> Formation of independent fulcrum 9
If the independent fulcrum 9 is provided at a position away from the shelf board 6, the length of the top board 7 can be further increased, and a large weight can be obtained by the embankment 8 mounted thereon.
The independent fulcrum 9 can be obtained, for example, by constructing a concrete beam outside the shelf 6.
Furthermore, it is possible to adopt a configuration in which a foundation pile 91 is installed at a position away from the shelf board 6 by a certain distance and a part of the top board 7 is placed on the foundation pile 91.
If one end is supported on the top plate 7 by the foundation pile 91, the deformation of the top plate 7 can be suppressed and the settlement of the fulcrum 9 can be reduced.

本発明の地下タンクの説明図。Explanatory drawing of the underground tank of this invention. 連壁の上部の構造の説明図。Explanatory drawing of the structure of the upper part of a continuous wall. 天板と搭載した盛土の重量の関係の説明図。Explanatory drawing of the relationship between a top plate and the weight of the embankment mounted. 他の実施例の説明図。Explanatory drawing of another Example. 他の実施例の説明図。Explanatory drawing of another Example. 従来の地下タンクの説明図。Explanatory drawing of the conventional underground tank.

符号の説明Explanation of symbols

1:地下タンク
2:側壁
3:底版
4:屋根板
5:連壁
6:棚板
7:天板
8:盛土
9:独立支点
1: underground tank 2: side wall 3: bottom plate 4: roof plate 5: continuous wall 6: shelf plate 7: top plate 8: embankment 9: independent fulcrum

Claims (4)

側壁と、底板と、屋根と、側壁の外周に設置した地下壁とによって構成した地下タンクにおいて、
地下壁の上端に、外周方向に向けて設けた棚板と、
棚板と分離した板体であって、一部を棚板の上に載置し、それ以外の部分を棚板よりも外側へ張り出して載置した天板と、
天板の上に搭載した盛土によって構成した、
地下タンクの構造。
In the underground tank composed of the side wall, bottom plate, roof, and underground wall installed on the outer periphery of the side wall,
A shelf board provided at the upper end of the underground wall in the outer circumferential direction;
A plate separated from the shelf board, a part of which is placed on the shelf board, and the other part of which is placed outside the shelf board and placed on the outside,
Constructed by embankment mounted on top plate,
Underground tank structure.
棚板と分離した天板の断面形状は、
棚板へ載置する棚板載置部と、
棚板から外側へ張り出した張り出し部とよりなり、
棚板載置部の上の土の重量を、
張り出し部の上の土の重要よりも大きくなるように構成した、
請求項1記載の地下タンクの構造。
The cross-sectional shape of the top plate separated from the shelf plate is
A shelf placement unit for placing on the shelf,
It consists of a projecting part that projects outward from the shelf board,
The weight of the soil above the shelf mounting part,
Constructed to be larger than the importance of soil above the overhang,
The structure of the underground tank according to claim 1.
側壁と、底板と、屋根と、側壁の外周に設置した地下壁とによって構成した地下タンクにおいて、
地下壁の上端に、外周方向に向けて設けた棚板と、
棚板から離れた位置に設置した独立支点と、
棚板と分離した板体であって、一部を棚板の上に載置し、一部を独立支点に載置した天板と、
天板の上に搭載した盛土によって構成した、
地下タンクの構造。
In the underground tank composed of the side wall, bottom plate, roof, and underground wall installed on the outer periphery of the side wall,
A shelf board provided at the upper end of the underground wall in the outer circumferential direction;
An independent fulcrum installed at a position away from the shelf,
A plate separated from the shelf board, a part of which is placed on the shelf board, and a part of which is placed on an independent fulcrum;
Constructed by embankment mounted on top plate,
Underground tank structure.
独立支点は、
棚板から一定の距離だけ離れた位置に設置した基礎杭で支持している、
請求項3記載の地下タンクの構造。
Independent fulcrum is
Supported by a foundation pile installed at a certain distance from the shelf,
The structure of the underground tank according to claim 3.
JP2004192173A 2004-06-29 2004-06-29 Underground tank structure Expired - Lifetime JP4328267B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004192173A JP4328267B2 (en) 2004-06-29 2004-06-29 Underground tank structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004192173A JP4328267B2 (en) 2004-06-29 2004-06-29 Underground tank structure

Publications (2)

Publication Number Publication Date
JP2006009530A true JP2006009530A (en) 2006-01-12
JP4328267B2 JP4328267B2 (en) 2009-09-09

Family

ID=35777061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004192173A Expired - Lifetime JP4328267B2 (en) 2004-06-29 2004-06-29 Underground tank structure

Country Status (1)

Country Link
JP (1) JP4328267B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009121204A (en) * 2007-11-19 2009-06-04 Taisei Corp Underground structure
CN101812852A (en) * 2010-05-12 2010-08-25 南昌航空大学 Oil tank foundation active anti-floating construction method
WO2019218531A1 (en) * 2018-05-17 2019-11-21 南京联众建设工程技术有限公司 Pipe gallery anti-floating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009121204A (en) * 2007-11-19 2009-06-04 Taisei Corp Underground structure
CN101812852A (en) * 2010-05-12 2010-08-25 南昌航空大学 Oil tank foundation active anti-floating construction method
WO2019218531A1 (en) * 2018-05-17 2019-11-21 南京联众建设工程技术有限公司 Pipe gallery anti-floating device

Also Published As

Publication number Publication date
JP4328267B2 (en) 2009-09-09

Similar Documents

Publication Publication Date Title
JP2012007410A (en) Reinforcement structure for structure of rectangular cross section
JP2010156192A (en) Existing harbor quay-wall reinforcing structure and reinforcing method
JP2019199692A (en) Ground improvement structure and excavating method
JP2009007746A (en) Joint structure of pile head
JP2017057594A (en) Underground construction and construction method for the same
JP6387996B2 (en) Reinforcing structure and reinforcing method of existing steel sheet pile wall
JP4829870B2 (en) Underground structure
JP4762709B2 (en) Method to reduce liquefaction of foundation ground of existing buildings and prevent uneven settlement
JP2011236705A (en) Foundation structure of structure and method of constructing the same
JP4328267B2 (en) Underground tank structure
JP2012158891A (en) Construction method of pit-in type tank
KR20120073623A (en) Connecting structure of steel pipe sheet pile
JP2010163771A (en) Structure and construction method for coping with liquefaction of structure
JP4695623B2 (en) Retaining wall reinforcing structure and construction method thereof
JP3886275B2 (en) Underground tank structure
JP2020159006A (en) Retaining wall and its construction method
JP3740600B2 (en) Structure for preventing settlement of underground structures
CN214940183U (en) Steel-pipe pile diaphragm wall trades and props structure
JP2005330774A (en) Structure of underground tank
KR101089729B1 (en) The wall for the bridge post foundation construction
JP2003041608A (en) Structure of underground tank
JP2833735B2 (en) Underground integrated low temperature liquefied gas tank and its construction method
JP6951961B2 (en) How to build a ground tank and a ground tank
JP2022138636A (en) pile foundation structure
JP2018009401A (en) Tank remodelling method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070316

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090423

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090428

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090518

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: 20090609

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090612

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120619

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4328267

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150619

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150619

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150619

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250