Patent US2905667A successfully refreshed from Google Patents.
US2905667A
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Di-imidazole derivatives and process for their manufacture
Assignee: BASF Schweiz AG
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Filing: 1955-08-25
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Granted: 1959-09-22
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Expires: 1975-08-25
Abstract
No abstract record available.
Inventors
- 👤 Siegrist Adolf Emil
- 👤 Ackermann Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:27
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/20; C09; C09B; C09B23/00; C09B23/10; C09B23/105
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
22 words
A PROCESS FOR THE MANUFACTURING OF A DI-IMIDA ZOLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1)A COMPOUND CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
22 words
A PROCESS FOR THE MANUFACTURING OF A DI-IMIDA ZOLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1)A COMPOUND CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
8 words
A DI-IMIDIAZILE WHICH IS REPRESENTED BY THE FORMULA
Claim 4
Dependent Claim
8 words
A DI-IMIDIAZILE WHICH IS REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |