Patent US3379753A successfully refreshed from Google Patents.
US3379753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyalkylcarboxylic acid esters of hydroxymethylated diphenyl ether
Assignee: Dow Chemical Co
•
Filing: 1965-10-18
•
Granted: 1968-04-23
•
Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Bart J Bremmer
- 👤 James P Easterly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:52
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G18/00; C08G18/06; C08G18/28; C08G18/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE STRUCTURE
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE STRUCTURE
References Cited (Backward Citations)
US2865896A
Cited
US3100796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |