Patent US2523187A successfully refreshed from Google Patents.
US2523187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of 2, 4-dichlorophenoxy-acetic acid
Assignee: Dow Chemical Co
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Filing: 1948-05-22
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Granted: 1950-09-19
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Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Louis E Begin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:08
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/67; C07C69/708; C07C69/712
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE ESTERS OF 2,4-DICHLOROPHENOXY-ACETIC ACID HAVING THE FORMULA:
Claim 2
Dependent Claim
8 words
THE ESTERS OF 2,4-DICHLOROPHENOXY-ACETIC ACID HAVING THE 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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |