Patent US2569425A successfully refreshed from Google Patents.
US2569425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methoxy-ethyl esters of imido acids
Assignee: Sinclair Refining Co
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Filing: 1947-12-30
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Granted: 1951-09-25
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Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Richard O Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:29
CPC Classifications
C; C07; C07C; C07C257/00; C07C257/04; C07C257/06; C07C255/00; C07C255/01; C07C255/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
IMIDO ESTERS OF LOWER ALIPHATIC ALPHA CHLOROIMIDIC ACIDS SELECTED FROM THE CLASS CONSISTING OF THE ESTERS OF ALPHA CHLORO-PROPIONIMIDIC ACIDS OF NOT MORE THAN 3 CHLORIDE SUBSTITUENTS AND ALPHA CHLORO-BUTYRIMIDIC ACIDS OF NOT MORE THAN 2 CHLORINE SUBSTITUENTS WITH 2-METHOXYETHANOL.
Claim 2
Dependent Claim
40 words
IMIDO ESTERS OF LOWER ALIPHATIC ALPHA CHLOROIMIDIC ACIDS SELECTED FROM THE CLASS CONSISTING OF THE ESTERS OF ALPHA CHLORO-PROPIONIMIDIC ACIDS OF NOT MORE THAN 3 CHLORIDE SUBSTITUENTS AND ALPHA CHLORO-BUTYRIMIDIC ACIDS OF NOT MORE THAN 2 CHLORINE SUBSTITUENTS WITH 2-METHOXYETHANOL.
References Cited (Backward Citations)
US1851040A
Cited
US2091267A
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US2257021A
Cited
US2342590A
Cited
US2400463A
Cited
US2405894A
Cited
US2385290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |