Patent US2855398A successfully refreshed from Google Patents.
US2855398A
Expired / Lapsed
US
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Amidines of the indole series
Assignee: GD Searle LLC
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Filing: 1956-11-19
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Granted: 1958-10-07
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Voegtli Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:02
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A MEMBER OF THE CLASS CONSISTING OF BASES AND NONTOXIC ACID ADDITION SALTS THEREOF, SAID BASES HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
20 words
A MEMBER OF THE CLASS CONSISTING OF BASES AND NONTOXIC ACID ADDITION SALTS THEREOF, SAID BASES HAVING THE STRUCTURAL 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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |