NL64782C - - Google Patents
Info
- Publication number
- NL64782C NL64782C NL64782DA NL64782C NL 64782 C NL64782 C NL 64782C NL 64782D A NL64782D A NL 64782DA NL 64782 C NL64782 C NL 64782C
- Authority
- NL
- Netherlands
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D21C3/16—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides nitrogen oxides; nitric acid nitrates, nitrites
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2597430X | 1943-12-22 | ||
FR884455X | 1945-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL64782C true NL64782C (no) | 1900-01-01 |
Family
ID=32232283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL64782D NL64782C (no) | 1943-12-22 |
Country Status (7)
Country | Link |
---|---|
US (2) | US2597430A (no) |
BE (2) | BE463917A (no) |
CH (1) | CH255109A (no) |
DE (1) | DE884455C (no) |
FR (5) | FR986984A (no) |
GB (1) | GB609610A (no) |
NL (1) | NL64782C (no) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3130115A (en) * | 1961-10-27 | 1964-04-21 | Alfred M Thomsen | Method of processing lignified cellulose |
US3461028A (en) * | 1968-02-01 | 1969-08-12 | Alscope Ltd | Process for making pulp by impregnating cellulosic materials with ammonium hydroxide and nitric acid |
GB1457885A (en) * | 1973-03-29 | 1976-12-08 | Gallaher Ltd | Oxidation of cellulose |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE339303C (de) * | 1918-10-26 | 1921-07-20 | Richard Mueller Dr | Verfahren zur Herstellung von Zellstoff aus Holz |
US1816136A (en) * | 1920-03-25 | 1931-07-28 | Arthur B Foster | Method of converting wood into sugar and other products |
US1581671A (en) * | 1921-11-03 | 1926-04-20 | Bradley Linn | Production of pulp and other products from wood |
US1528218A (en) * | 1923-11-26 | 1925-03-03 | Pacific Lumber Co | Process of manufacturing pure cellulose from wood |
US1777751A (en) * | 1926-08-05 | 1930-10-07 | Ig Farbenindustrie Ag | Producing cellulose |
DE503450C (de) * | 1927-05-10 | 1930-07-23 | I G Farbenindustrie Akt Ges | Verfahren zum Aufschluss von Pflanzenfaserstoffen, wie Holz, Stroh u. dgl. |
BE363567A (no) * | 1928-09-18 | |||
DE557537C (de) * | 1930-04-13 | 1932-08-24 | Ig Farbenindustrie Ag | Verfahren zur Herstellung eines sehr harzarmen Zellstoffes |
US1987195A (en) * | 1934-03-03 | 1935-01-08 | Herman B Kipper | Process for the digestion of vegetable growths to produce cellulose |
US2074339A (en) * | 1934-03-13 | 1937-03-23 | Celanese Corp | Preparation of cellulosic material |
DE647025C (de) * | 1935-02-13 | 1937-06-25 | I G Farbenindustrie Akt Ges | Verfahren zum Aufschliessen von Holz |
GB490102A (en) * | 1937-08-24 | 1938-08-09 | Bela Bartfay | Process for obtaining cellulose from vegetable raw materials |
-
0
- NL NL64782D patent/NL64782C/xx active
-
1943
- 1943-12-22 FR FR986984D patent/FR986984A/fr not_active Expired
-
1945
- 1945-03-19 FR FR995520D patent/FR995520A/fr not_active Expired
-
1946
- 1946-03-14 CH CH255109D patent/CH255109A/fr unknown
- 1946-03-18 BE BE463917A patent/BE463917A/fr unknown
- 1946-03-18 GB GB8394/46A patent/GB609610A/en not_active Expired
- 1946-12-27 FR FR57264D patent/FR57264E/fr not_active Expired
-
1947
- 1947-06-19 FR FR60502D patent/FR60502E/fr not_active Expired
- 1947-07-30 US US764929A patent/US2597430A/en not_active Expired - Lifetime
- 1947-12-19 BE BE478384A patent/BE478384A/fr unknown
-
1948
- 1948-03-16 US US15271A patent/US2571993A/en not_active Expired - Lifetime
- 1948-12-31 DE DEP28767D patent/DE884455C/de not_active Expired
-
1952
- 1952-04-25 FR FR62790D patent/FR62790E/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2597430A (en) | 1952-05-20 |
FR57264E (fr) | 1952-12-31 |
BE463917A (fr) | 1946-04-30 |
US2571993A (en) | 1951-10-23 |
FR986984A (fr) | 1951-08-07 |
GB609610A (en) | 1948-10-05 |
DE884455C (de) | 1953-07-27 |
FR60502E (fr) | 1954-11-09 |
CH255109A (fr) | 1948-06-15 |
FR995520A (fr) | 1951-12-04 |
FR62790E (fr) | 1955-06-20 |
BE478384A (fr) | 1948-01-30 |