Patent US4345117A successfully refreshed from Google Patents.
Patent US2614121A successfully refreshed from Google Patents.
US2614121A
Expired / Lapsed
US
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Process for making intermediates for producing basic compounds
Assignee: Individual
•
Filing: 1950-03-10
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Granted: 1952-10-14
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Expires: 1970-03-10
Abstract
No abstract record available.
Inventors
- 👤 Charles C Price
- 👤 Royston M Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:11
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/233; C07D215/18; C07D215/48; C07D215/54; C07D215/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A METHOD OF PRODUCING ARYLAMINOMETHYLENE MALONIC ESTERS SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE TYPE
Claim 2
Independent Claim
17 words
A METHOD OF PRODUCING ARYLAMINOMETHYLENE MALONIC ESTERS SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE TYPE
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) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |