US2988554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New nitrogenous epoxide compounds
Assignee: BASF Schweiz AG
•
Filing: 1959-03-31
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Granted: 1961-06-13
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Expires: 1979-03-31
Abstract
No abstract record available.
Inventors
- 👤 Batzer Hans
- 👤 Nikles Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:41
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/10; C07; C07D; C07D303/00; C07D303/02; C07D303/36; C08G59/12; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/28; C08G59/40; C08G59/42; C08G59/4215
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
4 words
DIEPOXIDES OF THE FORMULA
References Cited (Backward Citations)
US2166971A
Cited
US2745847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |