Patent US3200149A successfully refreshed from Google Patents.
US3200149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha-6-deoxytetracycline derivatives and process
Assignee: Pfizer Inc
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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 19:56
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.
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US2878289A
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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 |