US3378554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicarbonyl-dihydrazones
Assignee: Agfa Gevaert NV
•
Filing: 1965-04-06
•
Granted: 1968-04-16
•
Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Puschel Walter
- 👤 Schellenberger Hans
- 👤 Laux Monika
- 👤 Loffler Klaus-Richard
- 👤 Loffler Claudia Maria
- 👤 Loffler Beate Elisabeth
- 👤 Wahl Othmar
- 👤 Pelz Willibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/44; C07D213/53; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/82; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D307/81; C07D307/82; G; G03; G03C; G03C7/00; G03C7/18; G03C7/30; G03C7/392; G03C7/39208; G03C7/39224
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US3162643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |