US3335191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxy ethers
Assignee: Hercules LLC
•
Filing: 1962-06-25
•
Granted: 1967-08-08
•
Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Brack Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4879; C08G63/00; C08G63/66; C08G63/668
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A POLY (DIHYDROXYALKYL) ARYL ETHER HAVING THE FORMULA:
Claim 2
Dependent Claim
8 words
A POLY (DIHYDROXYALKYL) ARYL ETHER 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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |