Patent US3228962A successfully refreshed from Google Patents.
US3228962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(2, 2-pentamethylene pyrrolidino methyl) tetracycline and salts
Assignee: Bristol Myers Co
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Filing: 1964-10-05
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Granted: 1966-01-11
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Donald N Mcgregor
- 👤 Lee C Cheney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:03
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; A; A61; A61K; A61K31/00; A61K31/65; C07C; C07C233/00; C07D209/00; C07D209/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A BASIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A BASIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
CA664258A
Cited
CA669686A
Cited
US2997471A
Cited
US3104240A
Cited
US3149114A
Cited
US3139433A
Cited
US3042716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |