Patent US2840595A successfully refreshed from Google Patents.
US2840595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lower-alkyl esters of ethionine
Assignee: Dow Chemical Co
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Filing: 1956-01-23
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Granted: 1958-06-24
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Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Stevens Donna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:48
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) THE LOWER-ALKYL ESTERS OF ETHIONINE AND (B) THE HYDROGEN CHLORIDE ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
22 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) THE LOWER-ALKYL ESTERS OF ETHIONINE AND (B) THE HYDROGEN CHLORIDE ADDITION SALTS THEREOF.
References Cited (Backward Citations)
CH251251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |