US2715128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthrone derivatives
Assignee: BASF Schweiz AG
•
Filing: 1953-07-06
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Granted: 1955-08-09
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Expires: 1973-07-06
Abstract
No abstract record available.
Inventors
- 👤 Grossmann Paul
- 👤 Kern Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:56
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN ANTHRONE DERIVATIVE OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN ANTHRONE DERIVATIVE OF 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) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |