US2901480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of new pyrpole derivatives
Assignee: BASF Schweiz AG
•
Filing: 1957-07-24
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Granted: 1959-08-25
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Expires: 1977-07-24
Abstract
No abstract record available.
Inventors
- 👤 Siegrist Adolf Emil
- 👤 Duenneuberger Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:28
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/56; C07D235/00; C07D235/02; C07D235/04; C07D235/20; C07D263/62; C07D279/00; C07D279/10; C07D279/14; C07D279/16; C07D403/00; C07D403/14; C07D413/00; C07D413/02; C07D413/06; C07D417/00; C07D417/02; C07D417/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF (1) COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF (1) COMPOUNDS OF THE FORMULA
Claim 3
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 4
Dependent Claim
4 words
COMPOUNDS OF 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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |