US3706798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bisoxalic acid diamides
Assignee: Novartis AG
•
Filing: 1971-04-12
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Granted: 1972-12-19
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Expires: 1991-04-12
Abstract
Abstract NEW BISOXALIC ACID DIAMIDES ARE STABILISERS FOR ORGANIC MATERIALS. THEY ARE PREPARED BY REACTING AN OXALIC ACID MONOAMIDE OR THE CHLORIDE OR AN ESTER THEREOF WITH AN ALKYLENDIAMINE.
Inventors
- 👤 Max Dunnenberger
- 👤 Hans Rudolf Biland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
Claims Analysis
Total Claims: 0
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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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |