US3200149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha-6-deoxytetracycline derivatives and process
Assignee: Pfizer Inc
•
Filing: 1961-05-05
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Granted: 1965-08-10
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Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 Robert K Blackwood
- 👤 Hans H Rennhard
- 👤 John J Beereboom
- 👤 Jr Charles R Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:08
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/16; A61K31/65; B; B29; B29D; B29D23/00; B65; B65D; B65D33/00; C; C07; C07C; C07C233/00; F; F16; F16L; F16L11/00; F16L11/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
31 words
THE PROCESS WHICH COMPRISES INTRODUCING HYDROGEN INTO A REACTION INERT SOLVENT MEDIUM CONTAINING A CATALYTIC AMOUNT OF A NOBLE METAL CATALYST AND A TETRACYCLINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
31 words
THE PROCESS WHICH COMPRISES INTRODUCING HYDROGEN INTO A REACTION INERT SOLVENT MEDIUM CONTAINING A CATALYTIC AMOUNT OF A NOBLE METAL CATALYST AND A TETRACYCLINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 3
Dependent Claim
53 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-6-DEOXY-5-OXYTETRACYCLINE, A-6-DEOXY-7-SUBSTITUTED-5OXYTETRACYCLINE, A-6-DEOXY-9-SUBSTITUTED-5-OXYTETRACYCLINE, A-6-DEOXY-11A-CHLORO-5-OXYTETRACYCLINE, A-6-DEOXY-11AFLUORO-5-OXYTETRACYCLINE, A-6-DEOXY-7,44A-DICHLORO-5-OXYTETRACYCLINE, A-6-DEOXY-7-CHLORO-11A-FLUROR-5-OXYTETRACYCLINE, THE CORRESPONDING 5-DESOXY COMPOUNDS, THE ACID ADDITION SALTS THEREOF, AND THE PHARMACEUTICALLY ACCEPTABLE METAL SALTS THEREOF, EACH SUBSTITUENT OF SAID 7 AND 9 SUBSTITUTED COMPOUNDS BEING SELECTED FROM THE GROUP CONSISTING OF CHLORO, NITRO, AMINO AND LOWER ALKANOLYLAMINO.
Claim 4
Dependent Claim
53 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-6-DEOXY-5-OXYTETRACYCLINE, A-6-DEOXY-7-SUBSTITUTED-5OXYTETRACYCLINE, A-6-DEOXY-9-SUBSTITUTED-5-OXYTETRACYCLINE, A-6-DEOXY-11A-CHLORO-5-OXYTETRACYCLINE, A-6-DEOXY-11AFLUORO-5-OXYTETRACYCLINE, A-6-DEOXY-7,44A-DICHLORO-5-OXYTETRACYCLINE, A-6-DEOXY-7-CHLORO-11A-FLUROR-5-OXYTETRACYCLINE, THE CORRESPONDING 5-DESOXY COMPOUNDS, THE ACID ADDITION SALTS THEREOF, AND THE PHARMACEUTICALLY ACCEPTABLE METAL SALTS THEREOF, EACH SUBSTITUENT OF SAID 7 AND 9 SUBSTITUTED COMPOUNDS BEING SELECTED FROM THE GROUP CONSISTING OF CHLORO, NITRO, AMINO AND LOWER ALKANOLYLAMINO.
References Cited (Backward Citations)
BE572584A
Cited
BE565025A
Cited
BE566456A
Cited
US2878289A
Cited
US3005023A
Cited
US3019260A
Cited
US2976318A
Cited
US3036129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |