Patent US3420845A successfully refreshed from Google Patents.
US3420845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrrole-2-carboxamido amidines
Assignee: Pfizer Italia SRL
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Filing: 1965-07-07
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Granted: 1969-01-07
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Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Federico Arcamone
- 👤 Sergio Penco
- 👤 Vincenzo Nicolella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:26
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-METHYL - 4-(1-METHYL - 4-(1-METHYL - 4-FORMYL-AMINOPYRROLE - 2-CARBOXAMIDO) - PYRROLE - 2 -CARBOXAMIDO)PYRROLE - 2-CARBOXAMIDOACETAMIDINE AND ITS NON-TOXIC ACID ADDITION SALTS WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, SULPHURIC, PHOSPHORIC, ACETIC, MALEIC, ASCORBIC, SUCCINIC, BENZOIC AND SALICYLIC.
Claim 2
Dependent Claim
49 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-METHYL - 4-(1-METHYL - 4-(1-METHYL - 4-FORMYL-AMINOPYRROLE - 2-CARBOXAMIDO) - PYRROLE - 2 -CARBOXAMIDO)PYRROLE - 2-CARBOXAMIDOACETAMIDINE AND ITS NON-TOXIC ACID ADDITION SALTS WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, SULPHURIC, PHOSPHORIC, ACETIC, MALEIC, ASCORBIC, SUCCINIC, BENZOIC AND SALICYLIC.
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |