US3152175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nu-substituted carbamyl chlorides
Assignee: Stamicarbon BV
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Filing: 1961-01-23
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Granted: 1964-10-06
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Johannes H Ottenheym
- 👤 Johan W Carritsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:17
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/04; C07C271/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR PRODUCING AN N-SUBSTITUTED CARBAMYL CHLORIDE HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR PRODUCING AN N-SUBSTITUTED CARBAMYL CHLORIDE HAVING 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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |