NO130158B - - Google Patents
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- Publication number
- NO130158B NO130158B NO00147088A NO14708863A NO130158B NO 130158 B NO130158 B NO 130158B NO 00147088 A NO00147088 A NO 00147088A NO 14708863 A NO14708863 A NO 14708863A NO 130158 B NO130158 B NO 130158B
- Authority
- NO
- Norway
- Prior art keywords
- cloth
- felt
- liquid
- roller
- nip
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims 11
- 239000007788 liquid Substances 0.000 claims 5
- 239000000463 material Substances 0.000 claims 2
- 229920003002 synthetic resin Polymers 0.000 claims 1
- 239000000057 synthetic resin Substances 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- SKKLOUVUUNMCJE-FQSMHNGLSA-N kanamycin B Chemical compound N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SKKLOUVUUNMCJE-FQSMHNGLSA-N 0.000 description 12
- 229960001192 bekanamycin Drugs 0.000 description 11
- 229930182824 kanamycin B Natural products 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 9
- 229960000318 kanamycin Drugs 0.000 description 8
- 229930182823 kanamycin A Natural products 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- 229930027917 kanamycin Natural products 0.000 description 6
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 3
- 239000012458 free base Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 241000187132 Streptomyces kanamyceticus Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- YGTPKDKJVZOVCO-KELBJJLKSA-N bekanamycin sulfate Chemical compound OS(O)(=O)=O.N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N YGTPKDKJVZOVCO-KELBJJLKSA-N 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 229940071161 dodecylbenzenesulfonate Drugs 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229930007927 cymene Natural products 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- VVSMKOFFCAJOSC-UHFFFAOYSA-L disodium;dodecylbenzene;sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O.CCCCCCCCCCCCC1=CC=CC=C1 VVSMKOFFCAJOSC-UHFFFAOYSA-L 0.000 description 1
- YRIUSKIDOIARQF-UHFFFAOYSA-N dodecyl benzenesulfonate Chemical compound CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 YRIUSKIDOIARQF-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 nitrogen-containing carbohydrate Chemical class 0.000 description 1
- HFPZCAJZSCWRBC-UHFFFAOYSA-N p-cymene Chemical compound CC(C)C1=CC=C(C)C=C1 HFPZCAJZSCWRBC-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/029—Wet presses using special water-receiving belts
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/0027—Screen-cloths
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0281—Wet presses in combination with a dryer roll
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/07—Water collectors, e.g. save-alls
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
- Saccharide Compounds (AREA)
Description
Fremgangsmåte til utvinning av kanamycin B. Method for the extraction of kanamycin B.
Antibiotikumet kanamycin fremstilles The antibiotic kanamycin is produced
på biologisk måte ved dyrkning under an-vendelse av en stamme Streptomyces kanamyceticus. Det er nå funnet at antibiotikumet er en blanding av to kanamycin-komponenter. Disse komponenter betegnes med A og B. in a biological manner by cultivation using a strain Streptomyces kanamyceticus. It has now been found that the antibiotic is a mixture of two kanamycin components. These components are denoted by A and B.
Komponenten A overveier som regel i Component A usually outweighs i
de normale næringsoppløsninger. Et nøy-aktig forhold av mengden av A og B kan ikke angis, da dette forhold varierer med hensyn til de levende cellers stoffskifte på uoversiktbar måte. Slike variasjoner har imidlertid innvirkning på de arbeidsmåter som er rettet på isolering av de forskjel-lige komponenter fra blandingen. the normal nutrient solutions. An exact ratio of the amount of A and B cannot be stated, as this ratio varies with regard to the metabolism of the living cells in an unpredictable manner. However, such variations have an impact on the working methods which are aimed at isolating the various components from the mixture.
Imidlertid krever komponenten B på However, component B requires
grunn av visse egenskaper, særlig på grunn av lavere giftighet, særlig interesse. Man må for isolering av de enkelte komponenter underkaste blandingen en adskillelses-behandling. For dette formål kan man an-vende prinsippet motstrømsfordeling eller arbeide med ioneutveksling. due to certain properties, especially due to lower toxicity, particular interest. In order to isolate the individual components, the mixture must be subjected to a separation treatment. For this purpose, one can use the principle of countercurrent distribution or work with ion exchange.
Disse metoder krever imidlertid for det However, these methods require it
første en meget subtil arbeidsmåte, og på den annen side har de den ulempe at det kreves en rekke trinn for å oppnå en uklan-derlig adskillelse. Den tid som går med til dette er derfor meget lang. firstly, a very subtle way of working, and on the other hand, they have the disadvantage that a number of steps are required to achieve an impeccable separation. The time required for this is therefore very long.
Formålet med oppfinnelsen er å unngå The purpose of the invention is to avoid
disse ulemper, og er rettet på å fremskaffe en enkel fremgangsmåte som gjør det mu- these disadvantages, and is aimed at providing a simple method that makes it mu-
lig å skille fra en av komponentene, nemlig komponent B, ved at den felles ut fra blandingen. Ifølge oppfinnelsen karakteriseres denne skillemetode ved at man til en vandig oppløsning tilsetter natriumdodecyl-benzensulfonat, løser opp fellingen av kanamycin B-dodecylbenzensulfonat i metanol og feller ut ved tilsetning av syre, fortrinsvis svovelsyre, det tilsvarende kanamycin B-salt og skiller dette fra. can be separated from one of the components, namely component B, by separating it from the mixture. According to the invention, this separation method is characterized by adding sodium dodecylbenzenesulfonate to an aqueous solution, dissolving the precipitate of kanamycin B dodecylbenzenesulfonate in methanol and precipitating by adding acid, preferably sulfuric acid, the corresponding kanamycin B salt and separating this.
De to komponentene, altså kanamycin A og kanamycin B, er begge vannoppløse-lige stoffer som imidlertid er uoppløselig i n-butanol, etylacetat, butylacetat, eter, kloroform og benzen. The two components, i.e. kanamycin A and kanamycin B, are both water-soluble substances which, however, are insoluble in n-butanol, ethyl acetate, butyl acetate, ether, chloroform and benzene.
Kanamycin A-basen har den empiriske formel The Kanamycin A base has the empirical formula
C18H:M-:S(iN4011> C18H:M-:S(iN4011>
har en spesifikk dreining [a] <2>D<*> lik —146° has a specific rotation [a] <2>D<*> equal to —146°
(c=l 0,1NH2SO,) danner et salicylidenderivat som smelter ved 272 til 274° C under spaltning, gir desoksystreptamin ved sterk, sur hydrolyse, gir et produkt med ultrafiolett absorpsjonsspektrum svarende til absorpsjonsspekteret hos furfural ved behandling med 40 pst. svovelsyre i 100 minutter ved 100° C og har ytterligere karakteristisk absorpsjonsbånd i den infra-røde del av spekteret, når det foreligger i form av den frie base i kaliumbromid ved følgende bølgelengder (uttrykt i mikron): (c=l 0.1NH2SO,) forms a salicylidene derivative which melts at 272 to 274° C during decomposition, gives desoxystreptamine on strong, acid hydrolysis, gives a product with an ultraviolet absorption spectrum corresponding to the absorption spectrum of furfural on treatment with 40 per cent sulfuric acid in 100 minutes at 100° C and has an additional characteristic absorption band in the infrared part of the spectrum, when present in the form of the free base in potassium bromide at the following wavelengths (expressed in microns):
Kanamycin B har i form av den frie base en spesifikk dreining [a]n på 135° (c = 0.63 i vann), gir et salicylidenderivat som spaltes ved 255 til 265° C, uten å smelte, viser intet ultrafiolett absorpsjonsspektrum tilsvarende det for furfural ved behandling med 40 pst. svovelsyre ved 100° C og viser ytterligere karakteristisk absorpsjonsbånd i den infrarøde del av spekteret, når det foreligger i form av den frie base i kaliumbromid ved følgende bølge-lengder (i mikron): 3.44, 6.74, 8.28, 8.76, 9.55 og 11.15. Kanamycin B in the form of the free base has a specific rotation [a]n of 135° (c = 0.63 in water), gives a salicylidene derivative which decomposes at 255 to 265° C, without melting, shows no ultraviolet absorption spectrum corresponding to that of furfural when treated with 40% sulfuric acid at 100° C and shows a further characteristic absorption band in the infrared part of the spectrum, when it exists in the form of the free base in potassium bromide at the following wavelengths (in microns): 3.44, 6.74, 8.28 , 8.76, 9.55 and 11.15.
Til forklaring av oppfinnelsen tjener det følgende eksempel: 50 g fast kanamycin (456 enheter/mg ved biologisk prøve, 131 enheter/mg ved ultrafiolett-furfural-prøve, middel på 0.287 for begge prøver) ble oppløst ved pH 6 i 2 1 vann og 60 g natriumdodecylbenzolsulfat tilsettes. Fellingen ble samlet opp, vasket med vann og løst opp i metanol; metanol- oppløsningen ble surgjort med svovelsyre, for å felle ut renset kanamycin-B-sulfat. Etter gjentagelse av fremgangsmåten ble 9.5 g fast kanamycin-B-sulfat (630 enhe-ter/mg ved biologisk prøve; 51 enheter/mg ved furfural-ultrafiolett-prøve, forhold 0.081) oppnådd. The following example serves to explain the invention: 50 g of solid kanamycin (456 units/mg in the biological test, 131 units/mg in the ultraviolet-furfural test, average of 0.287 for both tests) was dissolved at pH 6 in 2 1 water and 60 g of sodium dodecylbenzene sulphate are added. The precipitate was collected, washed with water and dissolved in methanol; methanol the solution was acidified with sulfuric acid to precipitate purified kanamycin B sulfate. After repeating the procedure, 9.5 g of solid kanamycin B-sulphate (630 units/mg by biological test; 51 units/mg by furfural-ultraviolet test, ratio 0.081) were obtained.
Kanamycin-B-basen spaltes ved en betraktelig lavere temperatur enn kanamycin-A-basen. Således blir kanamycin-B-basen mørkfarvet ved 170° C og danner en mørk, gummiaktig substans ved tørk-ning ved kokepunktet for cymen (176° C). Kanamycin-B-basen viste [a],, —135° The kanamycin B base is cleaved at a considerably lower temperature than the kanamycin A base. Thus, the kanamycin B base becomes dark colored at 170° C. and forms a dark, gummy substance when dried at the boiling point of cymene (176° C.). The kanamycin B base showed [a],, —135°
(c = 0.63 i vann) og ga ved analyse 44.69 pst. C, 7.48 pst. H og 12.65, 13.62 pst. ni-trogen etter korrektur for 10.3 pst. vekttap ved tørking av en prøve ved 100° C. (c = 0.63 in water) and gave by analysis 44.69 per cent C, 7.48 per cent H and 12.65, 13.62 per cent nitrogen after correction for 10.3 per cent weight loss when drying a sample at 100° C.
Bølgelengdene (mikron) for de karak-teristiske inf rarøde-absorpsj onsmaksima for kanamycin-B-basen er de følgende: The wavelengths (microns) of the characteristic infrared absorption maxima for the kanamycin B base are as follows:
For målingen ble kanamycin-B-basen presset til kaliumbromid, og disse tørket 15 timer i vakuum ved 137° C. For the measurement, the kanamycin B base was pressed into potassium bromide, and these were dried for 15 hours in a vacuum at 137°C.
Fremgangsmåte til utvinning av kanamycin B fra en blanding av kanamyciner erholdt ved dyrkning av en stamme av Streptomyces kanamyceticus i en nitro-genholdig carbonhydratnæringsoppløsning under submerse, aerobe betingelser, karakterisert ved at det til en vandig kanamycinholdig oppløsning settes natri-umdodecylbenzensulf onat, hvoretter bunn-fallet bestående av kanamycin B-dodecylbenzensulfonat samles opp, løses opp i metanol og etter tilsetning av syre, fortrinsvis svovelsyre, utvinnes i form av et salt av kanamycin B. Process for extracting kanamycin B from a mixture of kanamycins obtained by growing a strain of Streptomyces kanamyceticus in a nitrogen-containing carbohydrate nutrient solution under submerged, aerobic conditions, characterized in that sodium dodecylbenzene sulfonate is added to an aqueous kanamycin-containing solution, after which bottom- the precipitate consisting of kanamycin B-dodecylbenzenesulfonate is collected, dissolved in methanol and, after addition of acid, preferably sulfuric acid, recovered in the form of a salt of kanamycin B.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US173005A US3257268A (en) | 1962-02-13 | 1962-02-13 | Paper pressing process and apparatus utilizing water receiving belt |
Publications (1)
Publication Number | Publication Date |
---|---|
NO130158B true NO130158B (en) | 1974-07-15 |
Family
ID=22630105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO00147088A NO130158B (en) | 1962-02-13 | 1963-01-11 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3257268A (en) |
AT (1) | AT265844B (en) |
CH (1) | CH406828A (en) |
DE (1) | DE1411905A1 (en) |
DK (1) | DK125176B (en) |
FI (1) | FI46277C (en) |
GB (1) | GB985114A (en) |
NO (1) | NO130158B (en) |
SE (1) | SE325474B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3528881A (en) * | 1966-03-07 | 1970-09-15 | Beloit Corp | Felt pickup arrangement for paper sheet formed on a papermaking machine wire |
AT351354B (en) * | 1978-02-10 | 1979-07-25 | Andritz Ag Maschf | DEVICE FOR DEWATERING OF FIBER WALLS |
US4425842A (en) | 1981-05-01 | 1984-01-17 | Cotton Incorporated | High expression squeeze roll liquor extraction of nonwoven batts |
US4434633A (en) | 1981-05-01 | 1984-03-06 | Cotton Incorporated | High expression squeeze roll liquor extraction of nonwoven batts |
SE455316B (en) * | 1985-12-09 | 1988-07-04 | Nordiskafilt Ab | PROCEDURE AND DEVICE FOR PRESSURE PRESSURE IN PRESSURE PART FOR PAPER MACHINES |
US4888096A (en) * | 1987-12-02 | 1989-12-19 | Inotech Process Ltd. | Roll press for removing water from a web of paper using solid grooved roll and compressed air |
US5897745A (en) * | 1994-06-29 | 1999-04-27 | The Procter & Gamble Company | Method of wet pressing tissue paper |
DE19507374C2 (en) * | 1995-03-03 | 1997-01-09 | Voith Sulzer Papiermasch Gmbh | Dryer section |
US5961735A (en) * | 1995-06-21 | 1999-10-05 | North Carolina State University | Method of cleaning papermaking felts with enzymes |
US6103062A (en) * | 1998-10-01 | 2000-08-15 | The Procter & Gamble Company | Method of wet pressing tissue paper |
DE10158456A1 (en) * | 2001-11-28 | 2003-06-18 | Voith Paper Patent Gmbh | press felt |
CN114750265B (en) * | 2022-04-12 | 2024-03-19 | 哈尔滨工业大学(深圳) | Ceramic rolling device and method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA472924A (en) * | 1951-04-17 | Beloit Iron Works | Fluid pressure controlled roll assemblies | |
CA586264A (en) * | 1959-11-03 | Beloit Iron Works | Paper machine dryer | |
US1600509A (en) * | 1923-01-08 | 1926-09-21 | Paper & Textile Machinery Co | Paper-machine press |
DE527130C (en) * | 1930-03-12 | 1931-06-13 | Otto Guenther Papierfabrik | Process for producing paper that is smooth on one or two sides |
US2618205A (en) * | 1946-07-22 | 1952-11-18 | Beloit Iron Works | Papermaking machine |
US2672078A (en) * | 1950-04-05 | 1954-03-16 | Beloit Iron Works | Suction press assembly |
US2869437A (en) * | 1955-09-15 | 1959-01-20 | Beloit Iron Works | Paper machine press section |
FR1198432A (en) * | 1957-07-17 | 1959-12-07 | Stiftelsen Pappersbrukens Fors | Dehydration of pasta webs such as pulp webs or the like |
US3093535A (en) * | 1958-07-14 | 1963-06-11 | Stiftelsen Pappersbrukens Fors | Method of dewatering pulp webs |
-
1962
- 1962-02-13 US US173005A patent/US3257268A/en not_active Expired - Lifetime
- 1962-08-17 GB GB31656/62A patent/GB985114A/en not_active Expired
- 1962-08-31 SE SE09460/62A patent/SE325474B/xx unknown
- 1962-09-10 FI FI621648A patent/FI46277C/en active
- 1962-09-13 DE DE19621411905 patent/DE1411905A1/en active Pending
-
1963
- 1963-01-11 NO NO00147088A patent/NO130158B/no unknown
- 1963-01-15 CH CH47063A patent/CH406828A/en unknown
- 1963-01-15 AT AT30263A patent/AT265844B/en active
- 1963-01-26 DK DK38463AA patent/DK125176B/en unknown
Also Published As
Publication number | Publication date |
---|---|
AT265844B (en) | 1968-10-25 |
FI46277B (en) | 1972-10-31 |
DE1411905A1 (en) | 1969-11-27 |
US3257268A (en) | 1966-06-21 |
DK125176B (en) | 1973-01-08 |
CH406828A (en) | 1966-01-31 |
FI46277C (en) | 1973-02-12 |
SE325474B (en) | 1970-06-29 |
GB985114A (en) | 1965-03-03 |
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