KR20090088765A - Sound-absorbing block - Google Patents

Sound-absorbing block Download PDF

Info

Publication number
KR20090088765A
KR20090088765A KR1020080014231A KR20080014231A KR20090088765A KR 20090088765 A KR20090088765 A KR 20090088765A KR 1020080014231 A KR1020080014231 A KR 1020080014231A KR 20080014231 A KR20080014231 A KR 20080014231A KR 20090088765 A KR20090088765 A KR 20090088765A
Authority
KR
South Korea
Prior art keywords
sound absorbing
hole
block
sound absorption
sound
Prior art date
Application number
KR1020080014231A
Other languages
Korean (ko)
Other versions
KR100954388B1 (en
Inventor
유희종
Original Assignee
원광대학교산학협력단
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 원광대학교산학협력단 filed Critical 원광대학교산학협력단
Priority to KR1020080014231A priority Critical patent/KR100954388B1/en
Publication of KR20090088765A publication Critical patent/KR20090088765A/en
Application granted granted Critical
Publication of KR100954388B1 publication Critical patent/KR100954388B1/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/8404—Sound-absorbing elements block-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/14—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/849—Groove or slot type openings

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)

Abstract

A sound absorption block is provided to prevent the casualties since it does not burn in the fire by using the recycled coal. A sound absorption block comprises a sound absorption hole(11) and a guide hole(12). The sound absorption hole is penetrated to top and bottom. The guide hole is connected to the sound absorption hole and opened to the front and top and bottom. The front and rear end part of the sound absorption block are the round shape. The guide hole has more narrow width than the sound absorption hole. The rear side of the guide hole is connected through the sound absorption hole. The sound absorption hole and the guide hole are formed on the sound absorption block. The sound absorption block is made of porous coal ash.

Description

흡음블록{Sound-absorbing block}Sound-absorbing block

본 발명은 흡음 기능을 하는 흡음블록에 관한 것이다.The present invention relates to a sound absorbing block having a sound absorbing function.

일반적으로 방송국, 극장, 교회, 강당, 시청각실, 회의실, 실내체육관 등의 건물에는 흡음 목적의 내장재가 사용된다. In general, sound absorbing interior materials are used in buildings such as broadcasting stations, theaters, churches, auditoriums, audio-visual rooms, conference rooms, and indoor gymnasiums.

이러한 흡음 내장재로는 석면, 암면, 유리면, 연질우레탄류, 천연섬유 등과 같은 다공질형 흡음재료로 만들어진 패널이 사용된다.As the sound absorbing interior material, a panel made of a porous sound absorbing material such as asbestos, rock wool, glass wool, soft urethanes, natural fibers, or the like is used.

한편, 가연성인 우레탄이나 천연섬유로 만들어진 흡음 내장재는, 화재에 취약하여 건물에 화재가 발생할 시, 많은 사상자가 발생 될 수 있다. On the other hand, the sound-absorbing interior material made of combustible urethane or natural fiber is susceptible to fire, and when a fire occurs in a building, many casualties can occur.

또한, 불연성인 석면, 암면, 유리면으로 만들어진 흡음 내장재는 불연성인 반면 비용이 많이 든다. 특히 석면으로 만들어진 흡음 내장재는 인체에 해롭기 까지 하다.In addition, sound absorbing linings made of non-combustible asbestos, rock wool, and glass wool are incombustible but expensive. In particular, sound-absorbing materials made of asbestos are harmful to the human body.

또한, 상기 흡음 내장재는 건물 내부 벽면에 설치되는 것으로, 별도의 지지부가 없으면 설치하기가 어렵다. In addition, the sound absorbing interior material is installed on the wall inside the building, it is difficult to install without a separate support.

이에 본 발명은, 상기와 같은 문제점을 해소하기 위해 발명된 것으로, 흡음기능을 함은 물론, 불연성으로 화재에 강하며, 별도의 지지체 없이도 독립적으로 건물 내부 또는 외부에 설치될 수 있는 흡음블록을 제공함에 그 목적이 있다.Accordingly, the present invention, invented to solve the above problems, as well as the sound absorbing function, as well as non-combustible fire, and provides a sound absorbing block that can be independently installed inside or outside the building without a separate support. Has its purpose.

상기와 같은 과제를 해결하기 위한 본 발명은, 상하방으로 관통된 흡음구멍과, 흡음구멍과 연통되면서 전방과 상하방으로 개구된 가이드구멍이 형성된 것을 특징으로 한다.The present invention for solving the above problems is characterized in that the sound absorbing hole penetrated up and down, and the guide hole is opened in the front and up and down while communicating with the sound absorbing hole.

본 발명은, 상하방으로 관통된 흡음구멍과, 흡음구멍과 연통되면서 전방과 상하방으로 개구된 가이드구멍이 형성된 것으로, 흡음기능을 함은 물론, 불연성으로 화재에 강하며, 별도의 지지체 없이도 독립적으로 건물 내부 또는 외부에 설치될 수 있는 효과가 있다.The present invention has a sound absorbing hole penetrated up and down, and a guide hole opened up and down while communicating with the sound absorbing hole. The sound absorbing function is non-combustible and resistant to fire. This can be installed inside or outside the building.

이하 첨부 도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 제1실시예에 따른 흡음블록의 사시도로서, 도 1을 참조하여 본 발명에 따른 흡음블록을 설명하면 다음과 같다.1 is a perspective view of a sound absorbing block according to a first embodiment of the present invention. Referring to FIG. 1, a sound absorbing block according to the present invention will be described.

본 발명의 제1실시예에 따른 흡음블록(10)은 다공질로서, 상하방으로 관통된 흡음구멍(11)과, 흡음구멍(11)과 연통되면서 전방과 상하로 개구된 가이드구멍(12) 이 형성된다. The sound absorbing block 10 according to the first embodiment of the present invention is porous and has a sound absorbing hole 11 penetrating up and down, and a guide hole 12 opening up and down while communicating with the sound absorbing hole 11. Is formed.

상기 흡음구멍(11)은 상하로 관통된 홀 형상으로, 흡음블록(10)을 평면에서 봤을 시 전후단이 라운드 진 형상을 갖는다. 이때, 흡음구멍(11)를 이루는 면은 평면에서 봤을 시 다각형상을 가질 수도 있다.The sound absorbing hole 11 has a hole shape penetrating up and down, and when the sound absorbing block 10 is viewed in plan, the front and rear ends have a rounded shape. At this time, the surface forming the sound absorbing hole 11 may have a polygonal shape when viewed in a plane.

상기 가이드구멍(12)는, 흡음구멍(11) 보다 폭이 좁으며, 후방이 흡입부(11)와 연통된다. 따라서, 가이드구멍(12)로 들어온 음파가 흡음구멍(11)로 진입된다.The guide hole 12 is narrower in width than the sound absorbing hole 11, and the rear side thereof communicates with the suction part 11. Thus, sound waves entering the guide hole 12 enter the sound absorbing hole 11.

이때, 상기 흡음블록(10)은, 흡음구멍(11)과 가이드구멍(12)이 다수 개 형성될 수 있다.In this case, the sound absorbing block 10 may be formed of a plurality of sound absorbing holes 11 and guide holes 12.

한편, 본 발명의 제1실시예에 따른 흡음블록(10)은, 다공질 재질로 석탄회를 이용한 것으로, 석탄회에 카올린 분말, 점토, 장석, 왕모래를 혼합건식 분쇄하여 얻은 원료를 블록형태로 성형하여 만들어진다. On the other hand, the sound-absorbing block 10 according to the first embodiment of the present invention is made of coal ash as a porous material, and is made by molding the raw material obtained by mixing dry pulverization of kaolin powder, clay, feldspar and royal sand into coal ash in the form of a block. .

도 2는 본 발명에 따른 흡음블록을 통해 소리가 흡음되는 것을 나타낸 작용도로서, 도 2를 참조하여 흡음블록의 작용을 설명하면 다음과 같다.Figure 2 is a functional diagram showing that the sound is absorbed through the sound absorbing block according to the present invention, the operation of the sound absorbing block with reference to Figure 2 as follows.

상기 흡음블록(10)에 부딪힌 음파는 다공질인 흡음블록(10)의 외면에 일부가 흡수되고, 일부는 가이드구멍(12)를 따라서 흡음구멍(11)으로 들어간다.The sound wave hit by the sound absorbing block 10 is partially absorbed by the outer surface of the porous sound absorbing block 10, and a part of the sound wave enters the sound absorbing hole 11 along the guide hole 12.

상기 흡음구멍(11)으로 들어온 음파는, 다공질인 흡음구멍(11)에 부딪히면서 일부는 흡음구멍(11)에 흡수되고, 일부는 흡음구멍(11) 내에서 난반사 되면서 소멸된다. 따라서, 흡음블록(10)이 방음 효과를 가질 수 있다.The sound waves introduced into the sound absorbing hole 11 are absorbed by the sound absorbing hole 11 while colliding with the porous sound absorbing hole 11, and part of them are diffused by the diffuse reflection in the sound absorbing hole 11. Therefore, the sound absorbing block 10 may have a soundproofing effect.

한편, 도 3은 본 발명에 따른 흡음블록이 조적된 상태를 나타낸 것으로, 몰 타르(M)를 통해 다수 개가 조적된 흡입블록(10)은 하나의 벽체를 이룬다. On the other hand, Figure 3 shows a state in which the sound absorbing block is assembled according to the present invention, the suction block 10 is a plurality of pieces through the mortar (M) forms a wall.

이때, 상기 흡읍블록(10)의 가이드구멍(12)으로 몰타르(M)가 삽입되어, 흡입블록(10)과 흡입블록(10) 간의 결속력이 강화된다. At this time, the mortar (M) is inserted into the guide hole 12 of the suction block 10, the binding force between the suction block 10 and the suction block 10 is strengthened.

따라서, 상기 흡음블록(10)은 별도의 지지체 없이 건물 내부에 설치될 수 있으며 흡입블록(10)을 통해 건물 내의 공간을 구획하여 건물 내 공간 활용도를 높일 수 있다. Therefore, the sound absorbing block 10 can be installed inside the building without a separate support, and can increase the space utilization in the building by partitioning the space in the building through the suction block 10.

또한, 흡음블록(10)이 건물 외부에 설치되면, 흡음블록(10)은 울타리 기능을 하면서 흡음재 기능을 할 수 있어, 외부 잡음이 건물 내로 유입되지 않는다.In addition, when the sound absorbing block 10 is installed outside the building, the sound absorbing block 10 may function as a sound absorbing material while acting as a fence, so that external noise does not flow into the building.

또한, 흡음블록(10)이 도로의 양가에 조적되면, 흡음블록(10)은 사고에 의해 차량이 차도 밖으로 이탈되는 것을 방지함과 동시에, 차량 소음이 주택가로 유입되는 것을 방지한다. In addition, when the sound absorbing block 10 is integrated on both sides of the road, the sound absorbing block 10 prevents the vehicle from leaving the road due to an accident and prevents vehicle noise from entering the residential area.

도 4는 본 발명의 제2실시예 따른 흡음블록을 나타낸 단면도이다. 4 is a cross-sectional view showing a sound absorbing block according to a second embodiment of the present invention.

도 4를 참조하면, 제2실시예의 흡음블록(10')은, 제1실시예의 흡음블록(10)과 동일한 상태에서 전면에 다수개의 요철부(13)가 형성된다. Referring to FIG. 4, in the sound absorbing block 10 ′ of the second embodiment, a plurality of uneven parts 13 are formed on the front side in the same state as the sound absorbing block 10 of the first embodiment.

따라서, 음파가 상기 흡음블록(10')에 부딪히면, 일부는 다공질 외면에 흡수되고, 일부는 요철부(13)에 의해 난반사 됨과 동시에 요철부(13)을 이루는 다공질 면에 흡수된다. 이때, 흡음블록(10')의 가이드구멍(12)를 통해 요철부(13)에 들어간 음파는 제 1실시예에서와 같은 작용으로 소멸된다.Therefore, when the sound wave hits the sound absorbing block 10 ', part is absorbed by the porous outer surface, and part is diffusely reflected by the uneven portion 13 and at the same time is absorbed by the porous surface constituting the uneven portion 13. At this time, the sound wave entering the uneven portion 13 through the guide hole 12 of the sound absorption block 10 'is extinguished by the same action as in the first embodiment.

상술한 바와 같이 본 발명에 따른 흡음블록은, 건물 내외에 설치되어 건물 내외의 소음을 제거한다. 또한 상기 흡음블록은 블록형상을 가지기 때문에, 별도의 지지체가 없더라도 다수의 흡입블록을 조적하여 흡음막을 형성할 수 있으며 벽체 역할도 할 수 있다.As described above, the sound absorbing block according to the present invention is installed inside and outside the building to remove noise inside and outside the building. In addition, since the sound absorbing block has a block shape, it is possible to form a sound absorbing film by bundling a plurality of suction blocks even without a separate support, and may also serve as a wall.

또한, 상기 흡음블록은, 석탄회를 이용하기 때문에 흡음블록이 불에 타지 않아 화재가 발생하더라도 인명피해가 발생되지 않고, 폐기 처리되는 석탄회를 재활용함으로 환경친화적이다. 또한, 석탄회를 이용하여 흡음블록을 소성가공할 시, 흡음블록은 연황토색 빛깔을 띠므로 별도의 도색이 필요하지 않다.In addition, since the sound absorbing block uses coal ash, even if the sound absorbing block is not burned due to fire, it does not cause human injury, and it is environmentally friendly by recycling the discarded coal ash. In addition, when plasticizing the sound absorbing block using coal ash, the sound absorbing block has a light yellow earthy color, so that no additional painting is required.

본 발명은 상기한 바와 같은 실시예에 한정되지 않고, 이하의 청구범위를 벗어나지 않는 한도 내에서 다양하게 변형 실시될 수 있음은 물론이다.The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the following claims.

일례로 본 실시예의 경우에는 석탄회와 같은 다공성 재질을 포함하여 흡음블록을 제공하였지만 필요에 따라서 다공성 재질을 포함하지 않을 수도 있으며, 블록의 재료 조성 및 조성비 역시도 필요에 따라서 다양하게 변경될 수 있다. For example, in the present embodiment, a sound absorbing block is provided including a porous material such as coal ash, but may not include a porous material if necessary. The material composition and composition ratio of the block may also be variously changed as necessary.

도 1은 본 발명의 제1실시예에 따른 흡음블록을 나타낸 사시도이고,1 is a perspective view showing a sound absorbing block according to a first embodiment of the present invention,

도 2는 본 발명의 제1실시예에 따른 흡음블록의 작용을 나타낸 상태도이고,2 is a state diagram showing the action of the sound absorbing block according to the first embodiment of the present invention;

도 3은 본 발명의 제1실시예에 따른 흡음블록이 조적된 상태를 나타낸 상태도이고,3 is a state diagram showing a state in which a sound absorbing block is stacked according to the first embodiment of the present invention;

도 4는 본 발명의 제2실시예에 따른 흡음블록의 단면도이다.4 is a cross-sectional view of the sound absorbing block according to the second embodiment of the present invention.

- 첨부도면의 주요부분에 대한 용어설명 --Explanation of terms for main parts of attached drawings-

10,10'; 흡음블록 11; 흡음구멍10,10 '; Sound absorption block 11; Sound absorbing hole

12; 가이드구멍 13; 요철부12; Guide hole 13; Irregularities

Claims (3)

상하방으로 관통된 흡음구멍(11)과, 흡음구멍(11)과 연통되면서 전방과 상하방으로 개구된 가이드구멍(12)이 형성된 것을 특징으로 하는 흡음블록.Sound absorbing block (11) which penetrates up and down, and a guide hole (12) opened in front and up and down while communicating with the sound absorbing hole (11). 제1항에 있어서, The method of claim 1, 상기 가이드구멍(12)이 개구된 전면이 요철형태를 이루는 것을 특징으로 하는 흠음블록. The flaw block, characterized in that the front surface of the guide hole 12 is opened to form an uneven shape. 제1항에 있어서,The method of claim 1, 상기 가이드구멍(12)이 개구된 전면이 다공성 재질로 이루어진 것을 특징으로 하는 흡음블록. Sound absorbing block, characterized in that the front surface of the guide hole 12 is made of a porous material.
KR1020080014231A 2008-02-16 2008-02-16 Sound-absorbing block KR100954388B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080014231A KR100954388B1 (en) 2008-02-16 2008-02-16 Sound-absorbing block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080014231A KR100954388B1 (en) 2008-02-16 2008-02-16 Sound-absorbing block

Publications (2)

Publication Number Publication Date
KR20090088765A true KR20090088765A (en) 2009-08-20
KR100954388B1 KR100954388B1 (en) 2010-04-26

Family

ID=41207316

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080014231A KR100954388B1 (en) 2008-02-16 2008-02-16 Sound-absorbing block

Country Status (1)

Country Link
KR (1) KR100954388B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220060254A (en) * 2020-11-04 2022-05-11 최성일 Block system equipped with surface for absorbing noise having function of regulating porosity

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437476A (en) * 2013-08-20 2013-12-11 钟粤 Sound absorption wall brick

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3103516B2 (en) * 1997-03-06 2000-10-30 盟和産業株式会社 Sound absorbing material for interior
JP3621574B2 (en) * 1997-12-22 2005-02-16 株式会社小松製作所 Sound absorbing plate
KR200317122Y1 (en) * 2003-03-20 2003-06-25 주식회사 류림스톤 Stone Block for Absorbing and Excluding of Sounds
KR200324444Y1 (en) * 2003-05-24 2003-08-25 주식회사 푸른환경콘크리트 Double structual soundproof wall or lightweight PC

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220060254A (en) * 2020-11-04 2022-05-11 최성일 Block system equipped with surface for absorbing noise having function of regulating porosity

Also Published As

Publication number Publication date
KR100954388B1 (en) 2010-04-26

Similar Documents

Publication Publication Date Title
CN200975032Y (en) Environmental protection fire prevention woody acoustic panel
KR100954388B1 (en) Sound-absorbing block
CN2911069Y (en) Honeycomb-rib type sound gobo
KR101523577B1 (en) Acoustic board covered with a fabric
KR101783688B1 (en) Noise prevention structure of entrance floor for apartment house
KR200488126Y1 (en) Ceiling structure comprising air permeable molding
KR20070065666A (en) Soundproof and a fire door using aluminum foam panel
KR100650205B1 (en) Soundproofing Walls and Soundproof Booth Using That
KR100768520B1 (en) Structure of constructing sound-proof panel
KR200168597Y1 (en) Incombustible sound proof board
CN209145046U (en) A kind of Acoustic barrier plate structure
KR20080051242A (en) A five-resistent door
KR200420763Y1 (en) Fabricated Panel For Construction
KR20190088767A (en) The fire door made of wood
KR200332657Y1 (en) partition panel and assembling structure of it
KR102038233B1 (en) Filter system for building noise isolation
KR101255183B1 (en) A fireproof panel having wick and the installation structure of the fireproof panel
US10839784B1 (en) Sound reducing panel
CN213597364U (en) Decorative panel of making an uproar falls in fire prevention sound insulation
KR200298648Y1 (en) sound absorption panel for indoor
KR101810914B1 (en) Soundproofing block for closing the opening
KR20120007438U (en) Fireproof and soundproof Panel Structures
KR102153831B1 (en) Combination type lightweight panel
KR20150071342A (en) Assembly the inner panel for construction
KR101805739B1 (en) Incombustible and sound absorbing panel

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
N231 Notification of change of applicant
FPAY Annual fee payment

Payment date: 20130415

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20140324

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20150504

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20170324

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20180429

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20190310

Year of fee payment: 10