Patent US2689853A successfully refreshed from Google Patents.
US2689853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain i
Assignee: —
•
Filing: —
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Granted: 1954-09-21
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Expires: 1971-09-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:03
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/04; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D235/14; C07D403/06; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A BENZIMIDAZOLE COMPOUND AND A SALT THEREOF WITH ACIDS SUBSTANTIALLY NON-TOXIC TO THE HUMAN BODY, SAID BENZIMIDAZOLE COMPOUND CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
30 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A BENZIMIDAZOLE COMPOUND AND A SALT THEREOF WITH ACIDS SUBSTANTIALLY NON-TOXIC TO THE HUMAN BODY, SAID BENZIMIDAZOLE COMPOUND CORRESPONDING TO 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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |