Patent US64677A successfully refreshed from Google Patents.
Patent US2707186A successfully refreshed from Google Patents.
US2707186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imidazolone derivatives
Assignee: F Hoffmann La Roche AG
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Filing: 1954-05-06
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Granted: 1955-04-26
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Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Duschinsky Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:27
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
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) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |