Patent US2749367A successfully refreshed from Google Patents.
US2749367A
Expired / Lapsed
US
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Method for removal of a side chain
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-11-15
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Granted: 1956-06-05
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Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Lloyd B Barkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:44
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/673; C07C57/00; C07C57/02; C07C57/13; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE PROCESS OF REMOVING A B-CARBOXYETHYL SIDE CHAIN FROM A KETO-ACID OF THE STRUCTURE
Claim 2
Dependent Claim
14 words
THE PROCESS OF REMOVING A B-CARBOXYETHYL SIDE CHAIN FROM A KETO-ACID OF THE STRUCTURE
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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |