US3042716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mannich bases of tetracycline compounds and amino acids
Assignee: Pfizer Inc
•
Filing: 1961-12-04
•
Granted: 1962-07-03
•
Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Robert K Blackwood
- 👤 Karl J Brunings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:48
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
8 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 3
Dependent Claim
2 words
AMIDO-N-(LYSINOMETHYL) TETRACYCLINE.
Claim 4
Dependent Claim
2 words
AMIDO-N-(LYSINOMETHYL) TETRACYCLINE.
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) | 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 |