CA1047412A - Separateur a membrane tubulaire et tubes croises - Google Patents
Separateur a membrane tubulaire et tubes croisesInfo
- Publication number
- CA1047412A CA1047412A CA208,105A CA208105A CA1047412A CA 1047412 A CA1047412 A CA 1047412A CA 208105 A CA208105 A CA 208105A CA 1047412 A CA1047412 A CA 1047412A
- Authority
- CA
- Canada
- Prior art keywords
- hollow
- filament
- filaments
- fluid
- assembly
- 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
- 238000000926 separation method Methods 0.000 title description 8
- 239000012528 membrane Substances 0.000 title description 7
- 239000012530 fluid Substances 0.000 claims abstract description 122
- 238000011282 treatment Methods 0.000 claims abstract description 56
- 238000005192 partition Methods 0.000 claims description 19
- 239000004627 regenerated cellulose Substances 0.000 claims description 18
- 229920002678 cellulose Polymers 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 230000035699 permeability Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 229920002647 polyamide Polymers 0.000 claims 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 21
- 239000007864 aqueous solution Substances 0.000 abstract description 19
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 18
- 229920002301 cellulose acetate Polymers 0.000 abstract description 15
- 239000000203 mixture Substances 0.000 abstract description 11
- 210000003734 kidney Anatomy 0.000 abstract description 3
- 230000000850 deacetylating effect Effects 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 24
- 229940081735 acetylcellulose Drugs 0.000 description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 12
- 239000001913 cellulose Substances 0.000 description 12
- 239000001307 helium Substances 0.000 description 12
- 229910052734 helium Inorganic materials 0.000 description 12
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 239000004014 plasticizer Substances 0.000 description 9
- 239000011780 sodium chloride Substances 0.000 description 9
- 235000002639 sodium chloride Nutrition 0.000 description 9
- 229960002668 sodium chloride Drugs 0.000 description 9
- 238000000502 dialysis Methods 0.000 description 8
- 239000008246 gaseous mixture Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 230000006196 deacetylation Effects 0.000 description 5
- 238000003381 deacetylation reaction Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002074 melt spinning Methods 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 4
- 230000021736 acetylation Effects 0.000 description 4
- 238000006640 acetylation reaction Methods 0.000 description 4
- DDRJAANPRJIHGJ-UHFFFAOYSA-N creatinine Chemical compound CN1CC(=O)NC1=N DDRJAANPRJIHGJ-UHFFFAOYSA-N 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 235000006408 oxalic acid Nutrition 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 239000006188 syrup Substances 0.000 description 4
- 235000020357 syrup Nutrition 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 3
- -1 and glycerih Polymers 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920001747 Cellulose diacetate Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229940109239 creatinine Drugs 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- ZAMLGGRVTAXBHI-UHFFFAOYSA-N 3-(4-bromophenyl)-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid Chemical compound CC(C)(C)OC(=O)NC(CC(O)=O)C1=CC=C(Br)C=C1 ZAMLGGRVTAXBHI-UHFFFAOYSA-N 0.000 description 1
- 206010018910 Haemolysis Diseases 0.000 description 1
- 241001024304 Mino Species 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- PNNCWTXUWKENPE-UHFFFAOYSA-N [N].NC(N)=O Chemical compound [N].NC(N)=O PNNCWTXUWKENPE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 229960005076 sodium hypochlorite Drugs 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/10—Cellulose; Modified cellulose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/025—Bobbin units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/031—Two or more types of hollow fibres within one bundle or within one potting or tube-sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/032—More than two tube sheets for one bundle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2319/00—Membrane assemblies within one housing
- B01D2319/04—Elements in parallel
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9775673A JPS5149012B2 (fr) | 1973-08-30 | 1973-08-30 | |
| JP10268773A JPS5238836B2 (fr) | 1973-09-13 | 1973-09-13 | |
| JP12270473A JPS5149013B2 (fr) | 1973-11-02 | 1973-11-02 | |
| JP12455673A JPS5620047B2 (fr) | 1973-11-07 | 1973-11-07 | |
| JP48135626A JPS5238837B2 (fr) | 1973-12-03 | 1973-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1047412A true CA1047412A (fr) | 1979-01-30 |
Family
ID=27525879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA208,105A Expired CA1047412A (fr) | 1973-08-30 | 1974-08-29 | Separateur a membrane tubulaire et tubes croises |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE819424A (fr) |
| CA (1) | CA1047412A (fr) |
| DE (1) | DE2441333C3 (fr) |
| FR (1) | FR2242129B1 (fr) |
| GB (1) | GB1481064A (fr) |
| NL (1) | NL7411572A (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388256A (en) * | 1978-11-24 | 1983-06-14 | Masamichi Ishida | Process for manufacturing regenerated cellulose hollow fiber |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4336138A (en) * | 1975-07-26 | 1982-06-22 | Toyobo Co., Ltd. | Permeation separation apparatus |
| FR2380362A2 (fr) * | 1976-02-13 | 1978-09-08 | Baxter Travenol Lab | Faisceau de filaments creux, et procede et appareil d'enroulement de filaments creux |
| US4219426A (en) * | 1976-03-19 | 1980-08-26 | Organon Teknika B.V. | Dialysis device |
| JPS6037029B2 (ja) * | 1978-01-10 | 1985-08-23 | 東洋紡績株式会社 | 流体分離用糸条パツケ−ジの製造法 |
| NL7907212A (nl) * | 1978-10-02 | 1980-04-08 | Akzo Nv | Holle-vezel-dialysemembraan met verbeterd uitwisselingsoppervlak. |
| FR2447219A1 (fr) * | 1979-01-29 | 1980-08-22 | Kornilov Anatoly | Installation pour la separation de melanges de liquides selon leur poids moleculaire |
| US4361481A (en) * | 1979-05-21 | 1982-11-30 | Baxter Travenol Laboratories, Inc. | Capillary fiber bundles |
| US4267630A (en) * | 1979-06-28 | 1981-05-19 | Albany International Corp. | Method of fabrication of coreless hollow filament separatory module |
| CA1153171A (fr) * | 1979-12-17 | 1983-09-06 | David T. Chen | Fibres creuses de cellulose semipermeables, et methode de production connexe |
| FR2525487B1 (fr) * | 1982-04-27 | 1988-04-22 | Hospal Sodip | |
| FR2531333B1 (fr) * | 1982-08-09 | 1986-04-04 | Centre Nat Rech Scient | Pancreas bio-artificiel a ultrafiltration |
| DE3803693A1 (de) * | 1987-03-10 | 1988-09-22 | Akzo Gmbh | Mehrlagiger hohlfadenwickelkoerper |
| US4857081A (en) * | 1987-10-15 | 1989-08-15 | Separation Dynamics, Inc. | Separation of water from hydrocarbons and halogenated hydrocarbons |
| US4881955A (en) * | 1988-09-12 | 1989-11-21 | Union Carbide Corporation | Method for gas separation using helically wound hollow fibers permeable membrane cartridge |
| US4952312A (en) * | 1988-11-24 | 1990-08-28 | Sorin Biomedica S.P.A. | Method for winding the fibres of exchange devices, such as blood oxygenators and the like, and an exchange device produced by this method |
| FR2670130B1 (fr) * | 1990-12-11 | 1993-01-22 | Hospal Ind | Procede et dispositif de fabrication de faisceaux de fibres creuses semi-permeables pour appareil a membrane. |
| DE4129400A1 (de) * | 1991-09-04 | 1993-03-11 | Akzo Nv | Verfahren zum herstellen eines hohlfadenwickelkoerpers |
| US5489413A (en) * | 1992-11-03 | 1996-02-06 | Cobe Laboratories, Inc. | Hollow fiber blood oxygenator |
| US5395468A (en) * | 1993-04-21 | 1995-03-07 | Medtronic, Inc. | Method of construction of a mass transfer device |
| US6004511A (en) * | 1995-09-01 | 1999-12-21 | Baxter International Inc. | Hollow fiber oxygenator |
| DE19532365C2 (de) * | 1995-09-01 | 1998-12-17 | Baxter Int | Hohlfaseroxygenator |
| US5762868A (en) | 1995-11-30 | 1998-06-09 | Minnesota Mining And Manufacturing Company | Blood oxygenator and heat exchanger |
| JP3902232B2 (ja) | 1995-11-30 | 2007-04-04 | テルモ カーディオバスキュラー システムズコーポレイション | 多層中空繊維本体およびその製法 |
| DE19633177A1 (de) * | 1996-08-17 | 1998-02-19 | Mann & Hummel Filter | Flüssigkeitsfilterelement |
| EP1125591A1 (fr) * | 2000-01-05 | 2001-08-22 | Maehata, Eisuke | Appareil et procédé de séparation du sang |
| CN103506012B (zh) * | 2013-09-12 | 2016-01-27 | 广州中国科学院先进技术研究所 | 一种单侧封装u型中空纤维膜元件及组件 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE608328A (fr) * | 1960-09-19 | |||
| US3422008A (en) * | 1963-10-24 | 1969-01-14 | Dow Chemical Co | Wound hollow fiber permeability apparatus and process of making the same |
| US3277959A (en) * | 1964-08-12 | 1966-10-11 | Du Pont | Plastic tube heat exchanger and process of making |
| US3339341A (en) * | 1965-12-22 | 1967-09-05 | Du Pont | Fluid separation process and apparatus |
| US3536611A (en) * | 1967-02-06 | 1970-10-27 | Abcor Inc | Membrane device and method |
| US3419069A (en) * | 1967-04-28 | 1968-12-31 | Du Pont | Heat transfer apparatus having flexible plastic tubular elements arranged in a braided configuration |
| GB1366615A (en) * | 1971-02-25 | 1974-09-11 | Dow Chemical Co | Method for making a hollow fibre separatory element |
| US3760949A (en) * | 1971-08-13 | 1973-09-25 | Us Interior | Sealing means for hollow fiber bundles |
| BE793624A (fr) * | 1972-01-10 | 1973-05-02 | Baxter Laboratories Inc | Dispositif pour le transfert de masses, presentant une membrane de diffision tubulaire enroulee |
| FR2212166A1 (en) * | 1973-01-02 | 1974-07-26 | Rhone Poulenc Sa | Sepn processes using hollow fibres - spirally wound on core to form cartridge of small cylindrical membranes |
-
1974
- 1974-08-27 GB GB37433/74A patent/GB1481064A/en not_active Expired
- 1974-08-29 DE DE2441333A patent/DE2441333C3/de not_active Expired
- 1974-08-29 CA CA208,105A patent/CA1047412A/fr not_active Expired
- 1974-08-30 FR FR7429694A patent/FR2242129B1/fr not_active Expired
- 1974-08-30 BE BE148111A patent/BE819424A/fr unknown
- 1974-08-30 NL NL7411572A patent/NL7411572A/xx not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388256A (en) * | 1978-11-24 | 1983-06-14 | Masamichi Ishida | Process for manufacturing regenerated cellulose hollow fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2242129A1 (fr) | 1975-03-28 |
| FR2242129B1 (fr) | 1979-03-09 |
| DE2441333C3 (de) | 1984-08-30 |
| NL7411572A (nl) | 1975-03-04 |
| GB1481064A (en) | 1977-07-27 |
| DE2441333A1 (de) | 1975-03-27 |
| BE819424A (fr) | 1974-12-16 |
| DE2441333B2 (de) | 1980-10-23 |
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