US2878279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making bis-carbamic acid ester compounds
Assignee: OESTERREISCHISCHE STICKSTOFFWE
•
Filing: 1954-06-16
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Granted: 1959-03-17
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Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 Schmid Otto
- 👤 Bilek Ludwig
- 👤 Seifried Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:21
CPC Classifications
C; C07; C07C; C07C269/00; C07C269/02; C07C303/00; C07C303/26; C07C303/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
IN A PROCESS OF PRODUCING A POLYMETHYLENE BIS-(CARBAMIC ACID CHOLINE ESTER) COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
15 words
IN A PROCESS OF PRODUCING A POLYMETHYLENE BIS-(CARBAMIC ACID CHOLINE ESTER) COMPOUND OF 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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |