US3255253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine-containing polyols
Assignee: Union Carbide Corp
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Filing: 1962-07-30
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Granted: 1966-06-07
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 William C Kuryla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A POLYOL HAVING A HYDROXYL NUMBER OF FROM ABOUT 35 TO ABOUT 250, SAID POLYOL BEING THE FORMULA
Claim 2
Dependent Claim
18 words
A POLYOL HAVING A HYDROXYL NUMBER OF FROM ABOUT 35 TO ABOUT 250, SAID POLYOL BEING 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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |