US2638467A
Expired / Lapsed
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Process for the manufacture of organic nitrogen-containing compounds
Assignee: Beecham Research Laboratories Ltd
•
Filing: 1949-01-21
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Granted: 1953-05-12
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Expires: 1969-01-21
Abstract
No abstract record available.
Inventors
- 👤 Heilbron Ian
- 👤 Cook Arthur Herbert
- 👤 Levy Anthony Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:02
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/06; C07K1/08; C07K5/00; C07K5/04; C07K5/10; C07K5/1002; C07K5/1005; C07K5/1008; Y; Y10; Y10S; Y10S930/00; Y10S930/01; Y10S930/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE MANUFACTURE OF AMIDES OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE MANUFACTURE OF AMIDES OF THE GENERAL FORMULA:
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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |