Patent US3007920A successfully refreshed from Google Patents.
US3007920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New 6-aminopenicillanic acid derivatives
Assignee: RECH ET IND THERAPEUTIQUES EN
•
Filing: 1961-02-20
•
Granted: 1961-11-07
•
Expires: 1981-02-20
Abstract
No abstract record available.
Inventors
- 👤 Vanderhaeghe Hubert
- 👤 Claesen Michel
- 👤 Paul Van Dijck
- 👤 Parmentier Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:08
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACIDS HAVING THE FORMULA:
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACIDS HAVING THE FORMULA:
References Cited (Backward Citations)
BE569728A
Cited
US2941995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |