US2759964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkylaminoalkyl esters of phenyl substituted dihydroxybenzoic acids
Assignee: Dow Chemical Co
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Filing: 1953-07-09
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Granted: 1956-08-21
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Expires: 1973-07-09
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Beman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:25
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66; C07C59/68; C07C217/00; C07C217/02; C07C217/04; C07C217/06; C07C217/08; C07C237/00; C07C237/02; C07C237/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) ESTERS HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) ESTERS HAVING THE FORMULA
References Cited (Backward Citations)
US1976922A
Cited
US2594350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |