US3616211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing deoxyribonucleic acid
Assignee: Dow Chemical Co
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Filing: 1968-05-02
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Granted: 1971-10-26
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Expires: 1988-05-02
Abstract
Abstract An antibiotic characterized by the property that it bonds with deoxyribonucleic acid to form an adduct, and represented by phleomycin, is purified by combining the crude material with deoxyribonucleic acid, alone or as nucleohistone in vitro or especially in vivo, to form its specific complex, removing objectionable impurities that do not form such complexes, optionally liberating the antibiotic from the deoxyribonucleic acid complex as by enzymolysis, and separating it from the enzymolyzed fragments.
Inventors
- 👤 Paul A Pietsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:19
CPC Classifications
C; C07; C07H; C07H21/00; C07K; C07K9/00; C07K9/001; C07K9/003; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/30; C12P19/34; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |