US3227719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrazines
Assignee: Sandoz AG
•
Filing: 1963-07-29
•
Granted: 1966-01-04
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Hofmann Albert
- 👤 Frey Albert
- 👤 Ott Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:48
CPC Classifications
C; C07; C07D; C07D498/00; C07D498/12; C07D498/14; C07C; C07C69/00; C07C69/34; C07C69/38; C07D487/00; C07D487/02; C07D487/04; C07K; C07K5/00; C07K5/04; C07K5/06; C07K5/06139; C07K5/06165; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPOUND OF THE FORMULA 2-R1,2-(PHENYL-CH2-OOC-NH-),5-R2,10B-(HO-)PERHYDROOXAZOLO(3,2-A)PYRROLO(2,1 -C)PYRAZINE-3,6-DIONE WHEREIN R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL AND R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND BENZL.
Claim 2
Dependent Claim
34 words
A COMPOUND OF THE FORMULA 2-R1,2-(PHENYL-CH2-OOC-NH-),5-R2,10B-(HO-)PERHYDROOXAZOLO(3,2-A)PYRROLO(2,1 -C)PYRAZINE-3,6-DIONE WHEREIN R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL AND R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND BENZL.
References Cited (Backward Citations)
US3084164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |