JP3471712B2 - Ceramic honeycomb filter and method for manufacturing the same - Google Patents
Ceramic honeycomb filter and method for manufacturing the sameInfo
- Publication number
- JP3471712B2 JP3471712B2 JP2000135359A JP2000135359A JP3471712B2 JP 3471712 B2 JP3471712 B2 JP 3471712B2 JP 2000135359 A JP2000135359 A JP 2000135359A JP 2000135359 A JP2000135359 A JP 2000135359A JP 3471712 B2 JP3471712 B2 JP 3471712B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic honeycomb
- honeycomb filter
- ceramic
- cells
- outer peripheral
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、焼却炉の排ガスの
ような高温ガス中からダスト分などを除去するために用
いられるセラミックハニカムフィルタ及びその製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic honeycomb filter used for removing dust and the like from high temperature gas such as exhaust gas from an incinerator, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】ごみ焼却炉から排出される排ガスのよう
な高温の排ガスからダストを除去するためには、耐熱性
に優れたセラミックフィルタが広く用いられている。従
来のセラミックフィルタは、図７に示すような有底中空
円筒状のものが一般的であり、多孔質セラミックからな
る本体１の首部には、環状の鍔部２が一体に成形されて
おり、この鍔部２を支持プレート３に引っかけるように
して用いられている。2. Description of the Related Art Ceramic filters having excellent heat resistance are widely used to remove dust from high temperature exhaust gas such as exhaust gas discharged from a refuse incinerator. A conventional ceramic filter generally has a bottomed hollow cylindrical shape as shown in FIG. 7, and an annular collar portion 2 is integrally formed on a neck portion of a main body 1 made of porous ceramic. The collar portion 2 is used by hooking it on the support plate 3.
【０００３】ところがこのようなキャンドル型と呼ばれ
る従来のセラミックフィルタは、１本当たりの有効ろ過
面積が小さいために、処理すべき排ガス流量が増加する
と多数本を設置しなければならず、集塵機が大型化して
しまうという問題を持っていた。However, since such a conventional ceramic filter called candle type has a small effective filtration area per filter, a large number of dust collectors must be installed when the exhaust gas flow rate to be treated increases. I had the problem of becoming
【０００４】そこで最近では、図８に示すようにセラミ
ックハニカム４のセル５の両端を目詰材６により交互に
目詰めしたセラミックハニカムフィルタが開発されてい
る。この構造のセラミックハニカムフィルタは、各セル
５，５間の隔壁をろ過面として利用することができるの
で、１本当たりの有効ろ過面積が非常に大きくなり、集
塵機の小型化に有功である。Therefore, recently, as shown in FIG. 8, a ceramic honeycomb filter has been developed in which both ends of the cells 5 of the ceramic honeycomb 4 are alternately filled with the filling material 6. In the ceramic honeycomb filter having this structure, the partition wall between the cells 5 and 5 can be used as a filtration surface, so that the effective filtration area per one becomes extremely large, which is effective for downsizing the dust collector.
【０００５】このような従来のセラミックハニカムフィ
ルタは、セラミックハニカム４の首部にセラミック製リ
ング７をモルタル８で接合し、支持プレート３に支持さ
せるための鍔部としている。ところがこのようなセラミ
ックハニカムフィルタは、排ガス温度が８００℃を超え
る高温になると、モルタル８の部分が破壊することがあ
った。その原因は、セラミックハニカム４はコージライ
トや炭化珪素のような熱膨張係数の小さい材料により構
成されているのに対して、モルタル８の熱膨張係数はこ
れよりも大きく、熱応力が発生するためである。従って
高温条件下においても信頼性の高いセラミックハニカム
フィルタが求められていた。In such a conventional ceramic honeycomb filter, a ceramic ring 7 is joined to the neck portion of the ceramic honeycomb 4 with a mortar 8 to form a brim portion for supporting the supporting plate 3 thereon. However, in such a ceramic honeycomb filter, when the exhaust gas temperature exceeds 800 ° C., the part of the mortar 8 may be destroyed. The reason is that the ceramic honeycomb 4 is made of a material having a small thermal expansion coefficient such as cordierite or silicon carbide, whereas the thermal expansion coefficient of the mortar 8 is larger than this and thermal stress is generated. Is. Therefore, a ceramic honeycomb filter having high reliability even under high temperature conditions has been demanded.
【０００６】[0006]
【発明が解決しようとする課題】本発明はこのような従
来の問題点を解決して、１本当たりの有効ろ過面積が大
きいという長所を損なうことなく、熱応力による鍔部の
破壊を防止し、高温条件下においても優れた信頼性を有
するセラミックハニカムフィルタ及びその製造方法を提
供するためになされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and prevents the flange portion from being damaged by thermal stress without impairing the advantage of having a large effective filtration area per filter. The present invention has been made to provide a ceramic honeycomb filter having excellent reliability even under high temperature conditions and a method for manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明のセラミックハニカムフィルタは、
セラミックハニカムのセルの両端を交互に目詰めしたセ
ラミックハニカムフィルタであって、支持プレートと接
触する鍔部がセラミックハニカムの外周部を切除するこ
とにより形成され、かつ鍔部のセル内には目詰材が充填
されていることを特徴とするものである。この目詰材は
セラミックハニカムと同一材料からなることが好まし
い。また本発明のセラミックハニカムフィルタの製造方
法は、セラミックハニカムのセルの両端を交互に目詰め
するとともに、外周部のセル全体にも目詰めを施したの
ち、目詰めされた外周部のセルを鍔部を残して切除する
ことにより、支持プレートと接触する鍔部を形成するこ
とを特徴とするものである。The ceramic honeycomb filter of the present invention made to solve the above-mentioned problems,
A ceramic honeycomb filter in which both ends of the cells of the ceramic honeycomb are alternately clogged, and the brim portion that comes into contact with the support plate is formed by cutting out the outer peripheral portion of the ceramic honeycomb, and the cells of the brim portion are clogged. It is characterized by being filled with material. This filling material is preferably made of the same material as the ceramic honeycomb. Further, the method for manufacturing a ceramic honeycomb filter of the present invention, while alternately filling both ends of the cells of the ceramic honeycomb, and also filling the entire outer peripheral cell, the outer peripheral cell is filled with a collar. It is characterized in that a collar portion that comes into contact with the support plate is formed by cutting off the portion that remains.
【０００８】本発明のセラミックハニカムフィルタは、
セラミックハニカムの外周部を切除することにより支持
プレートと接触する鍔部を構成したものであるから、図
７に示した従来のものとは異なり、熱膨張差により鍔部
が破壊されることがない。しかもこの鍔部には目詰材が
充填されているので、機械的強度も十分である。また本
発明のセラミックハニカムフィルタの製造方法によれ
ば、外周部のセル全体に目詰材を目詰めしたのち、目詰
めされた外周部のセルの外周部を切除するので、加工の
際にセラミックハニカムのセルが破損することがない。The ceramic honeycomb filter of the present invention comprises
Since the flange portion that comes into contact with the support plate is formed by cutting the outer peripheral portion of the ceramic honeycomb, unlike the conventional one shown in FIG. 7, the flange portion is not destroyed by the difference in thermal expansion. . Moreover, since the brim is filled with the plugging material, the mechanical strength is also sufficient. Further, according to the method for manufacturing a ceramic honeycomb filter of the present invention, after clogging the entire outer peripheral cell with the clogging material, the outer peripheral portion of the clogged outer peripheral cell is cut off, so that the ceramic is processed during processing. The cells of the honeycomb will not be damaged.
【０００９】[0009]
【発明の実施の形態】以下に図１〜図３を参照しつつ、
本発明の好ましい実施形態を説明する。まず図１に示す
ように、円柱状または角柱状のセラミックハニカム４
を、常法により押出し成形する。その材質は熱膨張係数
の小さいセラミックとし、具体的には４０℃から８００
℃までの熱膨張係数が０から８×１０-6／℃の範囲のも
のが好ましい。このような材料としては、ジルコニア−
スピネル、クレーボンド炭化珪素、ムライト−ジルコ
ン、ムライト、ジルコン、コージエライト−ムライト、
配向コ−ジエライト、無配向コ−ジエライト、ムライト
−チタン酸アルミニウム等を挙げることができる。セラ
ミックハニカム４は多数の均一なセル５を備えたもので
あり、各セル５，５間の薄肉で多孔質の隔壁をろ過面と
して使用するものである。この段階では、各セル５は貫
通孔となっている。BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIGS.
A preferred embodiment of the present invention will be described. First, as shown in FIG. 1, a cylindrical or prismatic ceramic honeycomb 4
Is extruded by a conventional method. The material is ceramic with a small coefficient of thermal expansion, specifically from 40 ° C to 800
It is preferable that the coefficient of thermal expansion up to ° C is in the range of 0 to 8 x 10 -6 / ° C. As such a material, zirconia-
Spinel, clay bond silicon carbide, mullite-zircon, mullite, zircon, cordierite-mullite,
Oriented cordierite, non-oriented cordierite, mullite-aluminum titanate and the like can be mentioned. The ceramic honeycomb 4 is provided with a large number of uniform cells 5, and thin and porous partition walls between the cells 5 and 5 are used as filtration surfaces. At this stage, each cell 5 is a through hole.
【００１０】次に図２に示すように、セラミックハニカ
ム４の各セル５の上下両端を目詰材６により交互に目詰
めすることにより、上端面が開口したセル５と下端面が
開口したセル５とが交互に隣接した構造とする。これと
同時に、セラミックハニカム４の外周部のセル全体にも
目詰材６を目詰めする。なおこの目詰めはセラミックハ
ニカム４の押出し成形に続いて行っても、あるいはセラ
ミックハニカム４を乾燥させた後に行ってもよい。熱膨
張差を抑制するために、目詰材６はセラミックハニカム
４と同一材料(共生地)とすることが好ましいが、材質の
異なる場合にも４０℃から８００℃までの温度範囲にお
いて、セラミックハニカムの材質との熱膨張係数の差が
3.5×１０-6／℃以下のものとすることが好ましい。例
えば、セラミックハニカムの材質が配向コ−ジエライト
又はムライトであるときには、目詰材６の材質をムライ
ト、ジルコン、ムライト−ジルコン、無配向コ−ジエラ
イト、コ−ジエライト−ムライト等とすることができ
る。Next, as shown in FIG. 2, the upper and lower ends of each cell 5 of the ceramic honeycomb 4 are alternately clogged with a clogging material 6, whereby a cell 5 having an open top end and a cell having an open bottom end are opened. 5 and 5 are alternately adjacent to each other. At the same time, the plugging material 6 is also filled in the entire cells on the outer peripheral portion of the ceramic honeycomb 4. The filling may be performed after the extrusion molding of the ceramic honeycomb 4 or after the ceramic honeycomb 4 is dried. In order to suppress the difference in thermal expansion, the filling material 6 is preferably made of the same material (co-fabric) as the ceramic honeycomb 4, but even when the materials are different, the ceramic honeycomb is in the temperature range of 40 ° C to 800 ° C. The difference in the coefficient of thermal expansion with the material of
It is preferably 3.5 × 10 −6 / ° C. or less. For example, when the material of the ceramic honeycomb is oriented cordierite or mullite, the material of the plugging material 6 can be mullite, zircon, mullite-zircon, non-oriented cordierite, cordierite-mullite or the like.
【００１１】次に図３に示すように、目詰材６が目詰め
されたセラミックハニカム４の外周部のセル５を、鍔部
１０となる部分を除いて機械的に切除し、鍔部１０を形
成する。単にセラミックハニカム４を加工すると隔壁が
肉薄であるため破損し易いが、本発明のように目詰材６
が目詰めされた状態で加工すれば破損を防止することが
できる。なお鍔部１０の下面がテーパ状になるよう加工
しておくことが好ましい。その後、全体を焼成すれば中
実の鍔部１０を持つセラミックハニカムフィルタが得ら
れる。また外周部の切除工程と焼成工程とを入れ替え、
先に焼成してから外周部の切除を行ってもよい。Next, as shown in FIG. 3, the cells 5 at the outer peripheral portion of the ceramic honeycomb 4 in which the filling material 6 is filled are mechanically cut off except for the portion to be the collar portion 10, and the collar portion 10 is cut. To form. When the ceramic honeycomb 4 is simply processed, the partition walls are thin, and thus the partition walls are easily damaged.
It is possible to prevent damage if processed in a closed state. In addition, it is preferable that the lower surface of the collar portion 10 is processed to have a tapered shape. Then, if the whole is fired, a ceramic honeycomb filter having a solid collar portion 10 is obtained. Also, exchanging the cutting process and the firing process of the outer peripheral part,
The outer peripheral portion may be cut off after firing first.
【００１２】得られたセラミックハニカムフィルタは、
図４のように鍔部１０を集塵機内部の支持プレート３に
載せて用いられるもので、両者間に介在させた耐熱性パ
ッキン１１により含塵ガス室１２と清浄ガス室１３との
間をシールする。そして含塵ガス室１２から供給される
ガスが各セル５，５間の隔壁を通過して清浄ガス室１３
側に抜ける際に、各セル５，５間の隔壁をろ過面として
ダストを集塵することができ、単位体積当たりのろ過面
積を非常に大きくすることができる点は従来と同様であ
る。しかしこのようにして製造された本発明のセラミッ
クハニカムフィルタは、図８に示した従来のものとは異
なり鍔部１０がセラミックハニカム４を切り出すことに
より形成されているため、７００℃を超える高温で使用
しても熱応力により破壊されることがない。The obtained ceramic honeycomb filter is
As shown in FIG. 4, the collar portion 10 is used by being mounted on the support plate 3 inside the dust collector, and the heat-resistant packing 11 interposed between the two portions seals between the dust-containing gas chamber 12 and the clean gas chamber 13. . Then, the gas supplied from the dust-containing gas chamber 12 passes through the partition wall between the cells 5 and 5 and passes through the clean gas chamber 13
When passing to the side, dust can be collected by using the partition wall between the cells 5 and 5 as a filtration surface, and the filtration area per unit volume can be made very large, which is the same as in the conventional case. However, the ceramic honeycomb filter of the present invention manufactured in this manner is different from the conventional one shown in FIG. 8 in that the collar portion 10 is formed by cutting out the ceramic honeycomb 4, and therefore, at a high temperature exceeding 700 ° C. Even if used, it will not be destroyed by thermal stress.
【００１３】なお、鍔部１０を形成する位置は必ずしも
セラミックハニカムフィルタの上部に限定されるもので
はなく、図５に示すように中央部としたり、図６に示す
ように下部とすることもできる。The position where the collar portion 10 is formed is not necessarily limited to the upper portion of the ceramic honeycomb filter, but may be the central portion as shown in FIG. 5 or the lower portion as shown in FIG. .
【００１４】[0014]
【発明の効果】以上に説明したように、本発明のセラミ
ックハニカムフィルタは、ハニカムフィルタの長所であ
る１本当たりの有効ろ過面積が大きいという特性を損な
うことなく、熱応力による鍔部の破壊を防止することが
でき、高温条件下においても優れた信頼性を有すること
ができる。従って本発明のセラミックハニカムフィルタ
は、大型の焼却炉などから排出される排ガスの集塵に適
したものである。また本発明のセラミックハニカムフィ
ルタの製造方法によれば、外周部を切除する際にセラミ
ックハニカムのセルが破損することがなく、歩留まりよ
くセラミックハニカムフィルタを製造することができ
る。As described above, the ceramic honeycomb filter of the present invention can prevent the brim portion from being damaged by thermal stress without deteriorating the advantage of the honeycomb filter that the effective filtration area per one is large. It can be prevented and can have excellent reliability even under high temperature conditions. Therefore, the ceramic honeycomb filter of the present invention is suitable for collecting exhaust gas discharged from a large incinerator or the like. Further, according to the method for manufacturing a ceramic honeycomb filter of the present invention, the cells of the ceramic honeycomb are not damaged when the outer peripheral portion is cut off, and the ceramic honeycomb filter can be manufactured with high yield.
【図１】素材となるセラミックハニカムを示す断面図で
ある。FIG. 1 is a cross-sectional view showing a ceramic honeycomb as a raw material.
【図２】セラミックハニカムの外周部のセルを目詰めし
た状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state in which cells on the outer peripheral portion of the ceramic honeycomb are filled.
【図３】セラミックハニカムの外周部を切除した状態を
示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the outer peripheral portion of the ceramic honeycomb is cut off.
【図４】本発明のセラミックハニカムフィルタの使用状
態を示す断面図である。FIG. 4 is a cross-sectional view showing a usage state of the ceramic honeycomb filter of the present invention.
【図５】本発明のセラミックハニカムフィルタの変形例
を示す側面図である。FIG. 5 is a side view showing a modified example of the ceramic honeycomb filter of the present invention.
【図６】本発明のセラミックハニカムフィルタの変形例
を示す側面図である。FIG. 6 is a side view showing a modified example of the ceramic honeycomb filter of the present invention.
【図７】従来のキャンドル型のセラミックフィルタを示
す断面図である。FIG. 7 is a cross-sectional view showing a conventional candle-type ceramic filter.
【図８】従来のセラミックハニカムフィルタを示す断面
図である。FIG. 8 is a cross-sectional view showing a conventional ceramic honeycomb filter.
１ 従来のキャンドル型セラミックフィルタの本体、２
環状の鍔部、３ 支持プレート、４ セラミックハニカ
ム、５ セル、６ 目詰材、７セラミック製リング、８
モルタル、１０ 鍔部、１１ 耐熱性パッキン、１２ 含
塵ガス室、１３清浄ガス室1 Main body of conventional candle type ceramic filter, 2
Annular collar part, 3 support plates, 4 ceramic honeycombs, 5 cells, 6 plugging materials, 7 ceramic rings, 8
Mortar, 10 collar, 11 heat resistant packing, 12 dust containing gas chamber, 13 clean gas chamber
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−169347（ＪＰ，Ａ) 特開 平７−68106（ＪＰ，Ａ) 特開 平８−47613（ＪＰ，Ａ) 特開 平８−281034（ＪＰ，Ａ) 特公 平１−47206（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 46/00 - 46/54 B01D 39/20 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-169347 (JP, A) JP-A-7-68106 (JP, A) JP-A-8-47613 (JP, A) JP-A-8- 281034 (JP, A) JP-B 1-47206 (JP, B2) (58) Fields surveyed (Int.Cl. 7 , DB name) B01D 46/00-46/54 B01D 39/20
Claims (3)
に目詰めしたセラミックハニカムフィルタであって、支
持プレートと接触する鍔部がセラミックハニカムの外周
部を切除することにより形成され、かつ鍔部のセル内に
は目詰材が充填されていることを特徴とするセラミック
ハニカムフィルタ。1. A ceramic honeycomb filter in which both ends of a cell of a ceramic honeycomb are alternately filled, and a collar portion that comes into contact with a support plate is formed by cutting an outer peripheral portion of the ceramic honeycomb, and cells of the collar portion. A ceramic honeycomb filter having a filling material filled therein.
からなる請求項１記載のセラミックハニカムフィルタ。2. The ceramic honeycomb filter according to claim 1, wherein the plugging material is made of the same material as the ceramic honeycomb.
に目詰めするとともに、外周部のセル全体にも目詰めを
施したのち、目詰めされた外周部のセルを鍔部を残して
切除することにより、支持プレートと接触する鍔部を形
成することを特徴とするセラミックハニカムフィルタの
製造方法。3. Clamping both ends of the cells of the ceramic honeycomb alternately, and also filling all the cells of the outer peripheral portion, and then cutting off the cell of the outer peripheral portion that has been filled, leaving the collar portion. A method for manufacturing a ceramic honeycomb filter, characterized in that the collar portion is formed in contact with the support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000135359A JP3471712B2 (en) | 2000-05-09 | 2000-05-09 | Ceramic honeycomb filter and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000135359A JP3471712B2 (en) | 2000-05-09 | 2000-05-09 | Ceramic honeycomb filter and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001314718A JP2001314718A (en) | 2001-11-13 |
| JP3471712B2 true JP3471712B2 (en) | 2003-12-02 |
Family
ID=18643448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000135359A Expired - Fee Related JP3471712B2 (en) | 2000-05-09 | 2000-05-09 | Ceramic honeycomb filter and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3471712B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5684208B2 (en) * | 2012-09-25 | 2015-03-11 | 日本碍子株式会社 | Method for grinding honeycomb structure |
| JP5805039B2 (en) * | 2012-09-25 | 2015-11-04 | 日本碍子株式会社 | Honeycomb structure |
| JP5620447B2 (en) * | 2012-09-25 | 2014-11-05 | 日本碍子株式会社 | Method for coating outer periphery of honeycomb structure |
| EP2745910B1 (en) * | 2012-10-19 | 2019-03-27 | NGK Insulators, Ltd. | Dust-collecting honeycomb filter |
| JP6068274B2 (en) * | 2013-06-11 | 2017-01-25 | 日本碍子株式会社 | Honeycomb structure |
| JP6059181B2 (en) * | 2013-06-11 | 2017-01-11 | 日本碍子株式会社 | Honeycomb structure |
| JP6174500B2 (en) * | 2014-02-04 | 2017-08-02 | 日本碍子株式会社 | Honeycomb structure |
| JP6534822B2 (en) * | 2015-01-29 | 2019-06-26 | イビデン株式会社 | Honeycomb structure and method for manufacturing the same |
| WO2016125879A1 (en) * | 2015-02-05 | 2016-08-11 | 日本碍子株式会社 | Honeycomb structure |
-
2000
- 2000-05-09 JP JP2000135359A patent/JP3471712B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001314718A (en) | 2001-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100607478B1 (en) | Honeycomb filter | |
| JP3983117B2 (en) | Honeycomb structure and manufacturing method thereof | |
| CA1224729A (en) | High efficiency filter | |
| JP4404497B2 (en) | Honeycomb filter and manufacturing method thereof | |
| JP4367683B2 (en) | Honeycomb filter | |
| KR100602867B1 (en) | Honeycomb filter | |
| JPH0253083B2 (en) | ||
| US7122237B2 (en) | Honeycomb filter and method for manufacturing the same | |
| US7316722B2 (en) | Honeycomb structure | |
| JP3756721B2 (en) | Exhaust gas purification filter | |
| EP0043694B1 (en) | Particulate filter and material for producing the same | |
| WO2003002231A1 (en) | Honeycomb structural body | |
| JP2003269132A (en) | Exhaust emission control filter | |
| JP3471712B2 (en) | Ceramic honeycomb filter and method for manufacturing the same | |
| JP5351678B2 (en) | Honeycomb structure | |
| JP2590943Y2 (en) | Exhaust gas purification device | |
| JPH10299454A (en) | Exhaust gas filter and manufacture thereof, and sealant for exhaust gas filter used therein | |
| JP2014069158A (en) | Ceramic honeycomb filter, and manufacturing method thereof | |
| US7438966B2 (en) | Honeycomb segment and honeycomb structure using the honeycomb segment | |
| JP4685444B2 (en) | Manufacturing method of honeycomb filter | |
| JP2009101344A (en) | Exhaust gas cleaning filter and method for manufacturing the same | |
| JP2011190740A (en) | Honeycomb structure | |
| CA1227811A (en) | Ceramic foam cement | |
| WO2020075612A1 (en) | Honeycomb structure | |
| JP2007029924A (en) | Manufacturing method of ceramic honeycomb filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20030902 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070912 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090912 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090912 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100912 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100912 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110912 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120912 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |