US2883423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-aralkanoyl-1,3-indanedione,1-monohydrazones
Assignee: Nease Co LLC
•
Filing: 1958-09-02
•
Granted: 1959-04-21
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 William A Mosher
- 👤 Robert A Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:02
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A 2-ARALKANOYL-1,3 -INDANEDIONE,1- MONOHYDRAZONE OF THE FORMULA:
Claim 2
Dependent Claim
7 words
A 2-ARALKANOYL-1,3 -INDANEDIONE,1- MONOHYDRAZONE OF THE FORMULA:
References Cited (Backward Citations)
USRE23080E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |