US3374202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homopolymeric and copolymeric esters of durohydroquinone
Assignee: EIDP Inc
•
Filing: 1964-10-05
•
Granted: 1968-03-19
•
Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Schwarz Eckhard Christi August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:28
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2455653A
Cited
US2856375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |