Patent US3042586A successfully refreshed from Google Patents.
US3042586A
Expired / Lapsed
US
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Purification of streptokinase
Assignee: Merck and Co Inc
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Filing: 1959-09-29
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Granted: 1962-07-03
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Expires: 1979-09-29
Abstract
No abstract record available.
Inventors
- 👤 Siegel Malcolm
- 👤 Palombo Gabriel
- 👤 Baumgarten Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:33
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/195; C07K14/315; C07K14/3153; B; B01; B01J; B01J47/00; B01J47/014; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/8215; Y10S435/822; Y10S435/885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF PURIFYING STREPTOKINASE WHICH COMPRISES BRINGING INTO CONTACT WITH DEAE CELLULOSE A SOLU-TION OF STREPTOKINASE IN A PHOSPHATE BUFFER HAVING A MOLAR CONCENTRATION OF FROM 0.0005 TO 0.015, WASHING THE CELLULOSE WITH A PHOSPHATE BUFFER HAVING A MOLAR CONCENTRATION BETWEEN 0.02 AND 0.06 TO REMOVE IMPURITIES, AND REMOVING STREPTOKINASE FROM THE CELLULOSE WITH A PHOSPHATE BUFFER HAVING A MOLAR CONCENTRATION BETWEEN 0.006 AND 0.15.
Claim 2
Independent Claim
66 words
THE METHOD OF PURIFYING STREPTOKINASE WHICH COMPRISES BRINGING INTO CONTACT WITH DEAE CELLULOSE A SOLU-TION OF STREPTOKINASE IN A PHOSPHATE BUFFER HAVING A MOLAR CONCENTRATION OF FROM 0.0005 TO 0.015, WASHING THE CELLULOSE WITH A PHOSPHATE BUFFER HAVING A MOLAR CONCENTRATION BETWEEN 0.02 AND 0.06 TO REMOVE IMPURITIES, AND REMOVING STREPTOKINASE FROM THE CELLULOSE WITH A PHOSPHATE BUFFER HAVING A MOLAR CONCENTRATION BETWEEN 0.006 AND 0.15.
References Cited (Backward Citations)
US2753291A
Cited
US2997425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |