Patent US3072713A successfully refreshed from Google Patents.
US3072713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N1-substituted benzoyl-n1, n2-di-isopropyl hydrazides
Assignee: F Hoffmann La Roche AG
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Filing: 1959-09-29
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Granted: 1963-01-08
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Expires: 1979-09-29
Abstract
No abstract record available.
Inventors
- 👤 Gutmann Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:29
CPC Classifications
C; C07; C07C; C07C243/00; C07C243/24; C07C243/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASES REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASES 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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |