FR2466504A1 - Procede pour produire de l'ethanol par fermentation continue de matieres premieres polysaccharidiques - Google Patents
Procede pour produire de l'ethanol par fermentation continue de matieres premieres polysaccharidiques Download PDFInfo
- Publication number
- FR2466504A1 FR2466504A1 FR8021063A FR8021063A FR2466504A1 FR 2466504 A1 FR2466504 A1 FR 2466504A1 FR 8021063 A FR8021063 A FR 8021063A FR 8021063 A FR8021063 A FR 8021063A FR 2466504 A1 FR2466504 A1 FR 2466504A1
- Authority
- FR
- France
- Prior art keywords
- stream
- yeast
- unit
- ethanol
- separated
- 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
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000002994 raw material Substances 0.000 title claims abstract description 29
- 238000000855 fermentation Methods 0.000 title claims abstract description 28
- 230000004151 fermentation Effects 0.000 title claims abstract description 28
- 150000004676 glycans Chemical class 0.000 title claims abstract description 8
- 229920001282 polysaccharide Polymers 0.000 title claims abstract description 8
- 239000005017 polysaccharide Substances 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000001704 evaporation Methods 0.000 claims abstract description 31
- 230000008020 evaporation Effects 0.000 claims abstract description 24
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 claims abstract 3
- 108090000790 Enzymes Proteins 0.000 claims description 19
- 102000004190 Enzymes Human genes 0.000 claims description 19
- 229940088598 enzyme Drugs 0.000 claims description 19
- 229920002472 Starch Polymers 0.000 claims description 17
- 239000008107 starch Substances 0.000 claims description 17
- 235000019698 starch Nutrition 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 10
- 238000006460 hydrolysis reaction Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 4
- 108010073178 Glucan 1,4-alpha-Glucosidase Proteins 0.000 claims description 3
- 102100022624 Glucoamylase Human genes 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- 108010059892 Cellulase Proteins 0.000 claims description 2
- 229940106157 cellulase Drugs 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims 5
- 239000000463 material Substances 0.000 abstract description 7
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000001913 cellulose Substances 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 235000000346 sugar Nutrition 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000005194 fractionation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 210000005253 yeast cell Anatomy 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002255 enzymatic effect Effects 0.000 description 2
- 230000007071 enzymatic hydrolysis Effects 0.000 description 2
- 238000006047 enzymatic hydrolysis reaction Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 150000002972 pentoses Chemical class 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004382 Amylase Substances 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 108010084185 Cellulases Proteins 0.000 description 1
- 102000005575 Cellulases Human genes 0.000 description 1
- 101100346656 Drosophila melanogaster strat gene Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- GXCLVBGFBYZDAG-UHFFFAOYSA-N N-[2-(1H-indol-3-yl)ethyl]-N-methylprop-2-en-1-amine Chemical compound CN(CCC1=CNC2=C1C=CC=C2)CC=C GXCLVBGFBYZDAG-UHFFFAOYSA-N 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 108090000637 alpha-Amylases Proteins 0.000 description 1
- 102000004139 alpha-Amylases Human genes 0.000 description 1
- 229940024171 alpha-amylase Drugs 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 229940025131 amylases Drugs 0.000 description 1
- 108010047754 beta-Glucosidase Proteins 0.000 description 1
- 102000006995 beta-Glucosidase Human genes 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002016 disaccharides Chemical class 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000006911 enzymatic reaction Methods 0.000 description 1
- 238000002481 ethanol extraction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- MGCQZNBCJBRZDT-UHFFFAOYSA-N midodrine hydrochloride Chemical compound [H+].[Cl-].COC1=CC=C(OC)C(C(O)CNC(=O)CN)=C1 MGCQZNBCJBRZDT-UHFFFAOYSA-N 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920001542 oligosaccharide Polymers 0.000 description 1
- 150000002482 oligosaccharides Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 235000011835 quiches Nutrition 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 108010075550 termamyl Proteins 0.000 description 1
- 150000004043 trisaccharides Chemical class 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/06—Ethanol, i.e. non-beverage
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7908105A SE7908105L (sv) | 1979-10-01 | 1979-10-01 | Forfarande for framstellning av etanol genom kontinuerlig forjesning av polysackaridhaltiga ravaror |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2466504A1 true FR2466504A1 (fr) | 1981-04-10 |
| FR2466504B1 FR2466504B1 (enExample) | 1985-02-22 |
Family
ID=20338932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8021063A Granted FR2466504A1 (fr) | 1979-10-01 | 1980-10-01 | Procede pour produire de l'ethanol par fermentation continue de matieres premieres polysaccharidiques |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US4376163A (enExample) |
| JP (1) | JPS5664790A (enExample) |
| AR (1) | AR224909A1 (enExample) |
| AU (1) | AU525545B2 (enExample) |
| BR (1) | BR8006300A (enExample) |
| CA (1) | CA1138798A (enExample) |
| CU (1) | CU21348A (enExample) |
| DE (1) | DE3036872A1 (enExample) |
| DK (1) | DK413880A (enExample) |
| FI (1) | FI803069A7 (enExample) |
| FR (1) | FR2466504A1 (enExample) |
| GB (1) | GB2059989B (enExample) |
| IN (1) | IN152824B (enExample) |
| NL (1) | NL8005454A (enExample) |
| NZ (1) | NZ195048A (enExample) |
| PH (1) | PH16371A (enExample) |
| SE (1) | SE7908105L (enExample) |
| ZA (1) | ZA806079B (enExample) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3023874A1 (de) * | 1980-06-26 | 1982-01-21 | Supraton F.J. Zucker GmbH, 4040 Neuss | Verfahren zum gewinnen einer konzentrierten schlempe bei der herstellung von alkohol aus staerke oder staerkehaltigen rohstoffen |
| JPS5959195A (ja) * | 1982-09-27 | 1984-04-04 | Shinenerugii Sogo Kaihatsu Kiko | 固定化微生物菌体による連続アルコ−ル製造方法 |
| DE3313530A1 (de) * | 1983-04-14 | 1984-10-18 | Fried. Krupp Gmbh, 4300 Essen | Verfahren zur abtrennung von aethanol aus einer athanolhaltigen loesung |
| SE449876B (sv) * | 1984-12-07 | 1987-05-25 | Nobel Chematur Ab | Forfarande for framstellning av etanol med ett ytterligare centrifugalsepareringssteg, placerat antingen fore eller efter det primera destillationssteget |
| US5258293A (en) * | 1991-05-03 | 1993-11-02 | Trustees Of Dartmouth College | Continuous process for ethanol production from lignocellulosic materials without mechanical agitation |
| US5837506A (en) * | 1995-05-11 | 1998-11-17 | The Trustee Of Dartmouth College | Continuous process for making ethanol |
| KR0152482B1 (ko) * | 1995-09-29 | 1998-10-01 | 최차용 | 발효에 의한 균주 대사산물의 연속적 제조 방법 |
| WO2003066826A2 (en) * | 2002-02-08 | 2003-08-14 | Genencor International, Inc. | Methods for producing ethanol from carbon substrates |
| AU2004219649A1 (en) * | 2003-03-10 | 2004-09-23 | Broin And Associates, Inc. | Method for producing ethanol using raw starch |
| US20050233030A1 (en) | 2004-03-10 | 2005-10-20 | Broin And Associates, Inc. | Methods and systems for producing ethanol using raw starch and fractionation |
| US20050239181A1 (en) * | 2004-03-10 | 2005-10-27 | Broin And Associates, Inc. | Continuous process for producing ethanol using raw starch |
| BRPI0509301B1 (pt) * | 2004-03-31 | 2017-04-11 | Natureworks Llc | processo para fermentação de açucares contendo sacarídeos oligoméricos |
| AU2005299923A1 (en) * | 2004-10-22 | 2006-05-04 | Cargill, Incorporated | Process for the production of maltodextrins and maltodextrins |
| US20070037267A1 (en) * | 2005-05-02 | 2007-02-15 | Broin And Associates, Inc. | Methods and systems for producing ethanol using raw starch and fractionation |
| FI118301B (fi) * | 2005-05-25 | 2007-09-28 | St1 Biofuels Oy | Menetelmä etanoli-vesiseoksen valmistamiseksi |
| US7919289B2 (en) | 2005-10-10 | 2011-04-05 | Poet Research, Inc. | Methods and systems for producing ethanol using raw starch and selecting plant material |
| US7815741B2 (en) * | 2006-11-03 | 2010-10-19 | Olson David A | Reactor pump for catalyzed hydrolytic splitting of cellulose |
| US7815876B2 (en) * | 2006-11-03 | 2010-10-19 | Olson David A | Reactor pump for catalyzed hydrolytic splitting of cellulose |
| US8795994B2 (en) * | 2007-02-26 | 2014-08-05 | Korea Institute Of Industrial Technology | Method of producing biofuel using sea algae |
| US20080299624A1 (en) * | 2007-06-01 | 2008-12-04 | Edward Heslop | Continuous fermentation apparatus and method |
| DE102007040069A1 (de) * | 2007-08-24 | 2009-02-26 | Acs Agrochemische Systeme Gmbh | Fermentationsverfahren mit reduziertem Abwasserstrom |
| KR101032996B1 (ko) * | 2008-12-12 | 2011-05-09 | (주)페가서스인터내셔널 | 홍조류 추출물을 이용한 메탄가스 생산방법 |
| US8450094B1 (en) | 2009-03-03 | 2013-05-28 | Poet Research, Inc. | System for management of yeast to facilitate the production of ethanol |
| MX2011009269A (es) * | 2009-03-03 | 2011-09-26 | Poet Res Inc | Fermentacion de biomasa para la produccion de etanol. |
| US9068206B1 (en) | 2009-03-03 | 2015-06-30 | Poet Research, Inc. | System for treatment of biomass to facilitate the production of ethanol |
| WO2010102060A2 (en) * | 2009-03-03 | 2010-09-10 | Poet Research, Inc. | System for pre-treatment of biomass for the production of ethanol |
| US20110039319A1 (en) * | 2009-08-12 | 2011-02-17 | Theodora Retsina | Enzyme recycle from hydrolysis of lignocellulosic material |
| CN102421906B (zh) * | 2009-11-04 | 2015-10-14 | 阿文戈亚生物能源新技术公司 | 高效乙醇加工和高蛋白饲料副产品 |
| BRPI1100063A2 (pt) | 2010-05-07 | 2017-04-04 | Abengoa Bioenergy New Tech Inc | processos para a recuperação de valores de uma massa de fermentação, e para extração de lignina e inorgânicos, e, produtos de sólidos ricos em lignina |
| BR112014028043A2 (pt) | 2012-05-10 | 2017-06-27 | Abengoa Bioenergy New Tech Llc | processo de etanol de alta eficiência e coproduto de alimentação de alta proteína |
| HUE031009T2 (en) | 2012-08-09 | 2017-06-28 | Cargill Inc | Process for liquefying starch |
| CN113913471B (zh) * | 2021-11-25 | 2023-12-15 | 浙江华康药业股份有限公司 | 一种生物质糖化发酵生产纤维素乙醇的系统及方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2450277A1 (fr) * | 1979-02-27 | 1980-09-26 | Alfa Laval Ab | Perfectionnements aux procedes de production d'ethanol par fermentation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US385625A (en) * | 1888-07-03 | Alcoholic distillation | ||
| US1884272A (en) * | 1927-01-08 | 1932-10-25 | Sak Sphiren | Method of controlling yeast propagation |
| US1921991A (en) * | 1929-11-20 | 1933-08-08 | Us Ind Alcohol Co | Alcoholic fermentation process and product thereof |
| US2155134A (en) * | 1935-12-05 | 1939-04-18 | Deutsches Reich Reichsmonopolv | Fermentation process |
| US2356218A (en) * | 1941-09-02 | 1944-08-22 | Frank L Robinson | Fermentation process for production of ethanol |
| US4009075A (en) * | 1975-08-22 | 1977-02-22 | Bio-Industries, Inc. | Process for making alcohol from cellulosic material using plural ferments |
| US4220721A (en) * | 1979-04-27 | 1980-09-02 | University Of Arkansas Foundation | Method for enzyme reutilization |
-
1979
- 1979-10-01 SE SE7908105A patent/SE7908105L/xx not_active Application Discontinuation
-
1980
- 1980-09-23 US US06/189,571 patent/US4376163A/en not_active Expired - Lifetime
- 1980-09-25 NZ NZ195048A patent/NZ195048A/xx unknown
- 1980-09-26 IN IN1093/CAL/80A patent/IN152824B/en unknown
- 1980-09-29 FI FI803069A patent/FI803069A7/fi not_active Application Discontinuation
- 1980-09-30 DK DK413880A patent/DK413880A/da not_active Application Discontinuation
- 1980-09-30 CU CU8035324A patent/CU21348A/es unknown
- 1980-09-30 BR BR8006300A patent/BR8006300A/pt unknown
- 1980-09-30 DE DE19803036872 patent/DE3036872A1/de not_active Withdrawn
- 1980-09-30 CA CA000361241A patent/CA1138798A/en not_active Expired
- 1980-09-30 GB GB8031475A patent/GB2059989B/en not_active Expired
- 1980-10-01 FR FR8021063A patent/FR2466504A1/fr active Granted
- 1980-10-01 AU AU62868/80A patent/AU525545B2/en not_active Ceased
- 1980-10-01 AR AR282735A patent/AR224909A1/es active
- 1980-10-01 PH PH24653A patent/PH16371A/en unknown
- 1980-10-01 ZA ZA00806079A patent/ZA806079B/xx unknown
- 1980-10-01 NL NL8005454A patent/NL8005454A/nl not_active Application Discontinuation
- 1980-10-01 JP JP13592380A patent/JPS5664790A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2450277A1 (fr) * | 1979-02-27 | 1980-09-26 | Alfa Laval Ab | Perfectionnements aux procedes de production d'ethanol par fermentation |
| GB2044799A (en) * | 1979-02-27 | 1980-10-22 | Alfa Laval Ab | Ethanol production process |
Non-Patent Citations (1)
| Title |
|---|
| CA1978 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FI803069A7 (fi) | 1981-04-02 |
| DK413880A (da) | 1981-04-02 |
| AR224909A1 (es) | 1982-01-29 |
| US4376163A (en) | 1983-03-08 |
| BR8006300A (pt) | 1981-04-07 |
| ZA806079B (en) | 1981-09-30 |
| CU21348A (en) | 1983-10-04 |
| SE7908105L (sv) | 1981-04-02 |
| AU525545B2 (en) | 1982-11-11 |
| NZ195048A (en) | 1983-07-15 |
| PH16371A (en) | 1983-09-14 |
| AU6286880A (en) | 1981-04-09 |
| CA1138798A (en) | 1983-01-04 |
| NL8005454A (nl) | 1981-04-03 |
| DE3036872A1 (de) | 1981-04-16 |
| FR2466504B1 (enExample) | 1985-02-22 |
| GB2059989B (en) | 1984-02-29 |
| IN152824B (enExample) | 1984-04-14 |
| GB2059989A (en) | 1981-04-29 |
| JPS5664790A (en) | 1981-06-02 |
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