GB1596446A - Manufacture of ceramic foams - Google Patents
Manufacture of ceramic foams Download PDFInfo
- Publication number
- GB1596446A GB1596446A GB6954/78A GB695478A GB1596446A GB 1596446 A GB1596446 A GB 1596446A GB 6954/78 A GB6954/78 A GB 6954/78A GB 695478 A GB695478 A GB 695478A GB 1596446 A GB1596446 A GB 1596446A
- Authority
- GB
- United Kingdom
- Prior art keywords
- foam
- slurry
- ceramic
- permeability
- roll
- 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
Links
- 239000006260 foam Substances 0.000 title claims abstract description 104
- 239000000919 ceramic Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000002002 slurry Substances 0.000 claims abstract description 75
- 230000035699 permeability Effects 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 238000007906 compression Methods 0.000 claims abstract description 29
- 230000006835 compression Effects 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 54
- 229920000642 polymer Polymers 0.000 claims description 19
- 239000006261 foam material Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000000440 bentonite Substances 0.000 claims description 14
- 229910000278 bentonite Inorganic materials 0.000 claims description 14
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 14
- 238000005470 impregnation Methods 0.000 claims description 12
- 239000005995 Aluminium silicate Substances 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 235000012211 aluminium silicate Nutrition 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 11
- 229920000620 organic polymer Polymers 0.000 claims description 11
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 10
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- -1 aluminium hydroxychloride Chemical compound 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 3
- 239000007900 aqueous suspension Substances 0.000 claims description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- NFMWFGXCDDYTEG-UHFFFAOYSA-N trimagnesium;diborate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]B([O-])[O-].[O-]B([O-])[O-] NFMWFGXCDDYTEG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 13
- 239000004411 aluminium Substances 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
- B28B3/126—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material passing directly between the co-operating rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2093—Ceramic foam
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/0615—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances the burned-out substance being a monolitic element having approximately the same dimensions as the final article, e.g. a porous polyurethane sheet or a prepreg obtained by bonding together resin particles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/770,395 US4075303A (en) | 1975-06-23 | 1977-02-22 | Method of preparation of ceramic foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1596446A true GB1596446A (en) | 1981-08-26 |
Family
ID=25088411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6954/78A Expired GB1596446A (en) | 1977-02-22 | 1978-02-22 | Manufacture of ceramic foams |
Country Status (14)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7378076B2 (en) | 1998-06-29 | 2008-05-27 | Exxonmobil Chemical Patents Inc. | Process for production of macrostructures of a microporous material |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756366A (en) * | 1980-09-19 | 1982-04-03 | Toshiba Ceramics Co | Manufacture of tool for porous matter baking |
| DE3529075A1 (de) * | 1985-08-14 | 1987-02-19 | Man Technologie Gmbh | Verfahren zur herstellung von poroesen gegenstaenden |
| DE3642201C1 (de) * | 1986-12-10 | 1988-06-16 | Radex Deutschland Ag | Feuerfestes keramisches Bauteil |
| FR2645257B1 (fr) * | 1989-03-28 | 1992-10-02 | Ceraplast | Procede et dispositif de fabrication notamment d'un support d'enfournement en mousse ceramique et support obtenu |
| DE4003598A1 (de) * | 1990-02-02 | 1991-08-08 | Otto Feuerfest Gmbh | Verfahren und vorrichtung zum herstellen eines keramischen schaumkoerpers |
| DE4003599A1 (de) * | 1990-02-02 | 1991-08-08 | Otto Feuerfest Gmbh | Verfahren zur herstellung eines keramischen schaumkoerpers mit ausnehmungen oder durchgangskanaelen |
| IT1272873B (it) * | 1995-01-10 | 1997-07-01 | Savio Macchine Tessili Srl | Sistema di distribuzione e movimentazione delle spole alle stazioni di roccatura di una roccatrice automatica |
| DE19621638C2 (de) * | 1996-05-30 | 2002-06-27 | Fraunhofer Ges Forschung | Offenzellige Schaumkeramik mit hoher Festigkeit und Verfahren zu deren Herstellung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505410A (enrdf_load_stackoverflow) * | 1973-05-18 | 1975-01-21 | ||
| US3947363A (en) * | 1974-01-02 | 1976-03-30 | Swiss Aluminium Limited | Ceramic foam filter |
| US3893917A (en) * | 1974-01-02 | 1975-07-08 | Alusuisse | Molten metal filter |
| CH622230A5 (en) * | 1975-03-28 | 1981-03-31 | Alusuisse | Porous ceramic foam, process for its manufacture and its use |
| US3962081A (en) * | 1975-03-28 | 1976-06-08 | Swiss Aluminium Ltd. | Ceramic foam filter |
-
1977
- 1977-11-09 CA CA290,494A patent/CA1082894A/en not_active Expired
-
1978
- 1978-02-08 CH CH1394/78A patent/CH648009A5/de not_active IP Right Cessation
- 1978-02-10 DE DE2805611A patent/DE2805611C2/de not_active Expired
- 1978-02-20 YU YU00378/78A patent/YU37878A/xx unknown
- 1978-02-20 NO NO780574A patent/NO150566C/no unknown
- 1978-02-21 IT IT20489/78A patent/IT1094234B/it active
- 1978-02-21 BR BR7801041A patent/BR7801041A/pt unknown
- 1978-02-21 AT AT0125678A patent/AT371089B/de not_active IP Right Cessation
- 1978-02-21 ZA ZA00781008A patent/ZA781008B/xx unknown
- 1978-02-22 NL NLAANVRAGE7802007,A patent/NL186628C/xx not_active IP Right Cessation
- 1978-02-22 JP JP1957278A patent/JPS53121011A/ja active Granted
- 1978-02-22 BE BE185365A patent/BE864188A/xx not_active IP Right Cessation
- 1978-02-22 GB GB6954/78A patent/GB1596446A/en not_active Expired
- 1978-02-22 FR FR7805104A patent/FR2381001A1/fr active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7378076B2 (en) | 1998-06-29 | 2008-05-27 | Exxonmobil Chemical Patents Inc. | Process for production of macrostructures of a microporous material |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA125678A (de) | 1982-10-15 |
| AT371089B (de) | 1983-05-25 |
| JPS53121011A (en) | 1978-10-23 |
| NO150566B (no) | 1984-07-30 |
| ZA781008B (en) | 1979-03-28 |
| DE2805611A1 (de) | 1978-08-24 |
| NL7802007A (nl) | 1978-08-24 |
| IT1094234B (it) | 1985-07-26 |
| BE864188A (fr) | 1978-06-16 |
| NL186628B (nl) | 1990-08-16 |
| FR2381001B1 (enrdf_load_stackoverflow) | 1984-12-28 |
| NL186628C (nl) | 1991-01-16 |
| FR2381001A1 (fr) | 1978-09-15 |
| JPS5636143B2 (enrdf_load_stackoverflow) | 1981-08-21 |
| IT7820489A0 (it) | 1978-02-21 |
| NO780574L (no) | 1978-08-23 |
| YU37878A (en) | 1982-06-30 |
| NO150566C (no) | 1984-11-07 |
| CA1082894A (en) | 1980-08-05 |
| CH648009A5 (en) | 1985-02-28 |
| BR7801041A (pt) | 1978-11-28 |
| DE2805611C2 (de) | 1986-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4075303A (en) | Method of preparation of ceramic foam | |
| US4024212A (en) | Ceramic foam and method of preparation | |
| US3962081A (en) | Ceramic foam filter | |
| CA1059535A (en) | Ceramic foam filter | |
| US3893917A (en) | Molten metal filter | |
| US4056586A (en) | Method of preparing molten metal filter | |
| CA1293520C (en) | Ceramic foam filter and process for preparing same | |
| US4265659A (en) | Molten metal filter | |
| USRE32603E (en) | Process for preparing a ceramic foam | |
| US4803025A (en) | Ceramic foam | |
| CA1179382A (en) | Ceramic foam filter and aqueous slurry for making same | |
| US4391918A (en) | Ceramic foam filter and aqueous slurry for making same | |
| WO1997045381A1 (de) | Offenzellige schaumkeramik mit hoher festigkeit und verfahren zu deren herstellung | |
| US4975191A (en) | Ceramic foam filter | |
| GB1596446A (en) | Manufacture of ceramic foams | |
| Paiva et al. | Processing and thermomechanical evaluation of fibre-reinforced alumina filters | |
| AU601109B2 (en) | Ceramic foam | |
| JP2845046B2 (ja) | 溶融ステンレス合金用セラミックフィルター | |
| US8202346B1 (en) | Porous reticulated metal foam for filtering molten magnesium | |
| GB2097777A (en) | Ceramic foam | |
| CN1024761C (zh) | 一种高温泡沫陶瓷过滤片的生产方法 | |
| GB2227185A (en) | Foamed ceramic filter | |
| DE60319281T2 (de) | Herstellungsverfahren für feinporige medien | |
| DE19847049A1 (de) | Keramische Hochtemperaturfilter mittels Vibrationsverdichtung | |
| JP3287019B2 (ja) | セラミック多孔体の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960222 |