Patent US2599737A successfully refreshed from Google Patents.
US2599737A
Expired / Lapsed
US
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Nitrogen-containing organic compounds and their preparation
Assignee: Shell Development Co
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Filing: 1949-07-08
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Granted: 1952-06-10
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Expires: 1969-07-08
Abstract
No abstract record available.
Inventors
- 👤 David E Adelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:50
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C273/00; C07C273/18; C07C273/1854; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26; C10M2215/00; C10M2215/10; C10M2215/102; C10M2219/00; C10M2219/02; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/066; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS OF PRODUCING AN ESTER OF THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS OF PRODUCING AN ESTER OF THE GENERAL 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) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |