US3406140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane composition containing an epoxy compound as a stabilizer
Assignee: Celanese Corp
•
Filing: 1964-01-09
•
Granted: 1968-10-15
•
Expires: 1984-01-09
Abstract
No abstract record available.
Inventors
- 👤 Polestak Walter John
- 👤 Tracy James Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2813776A
Cited
US2962470A
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US2999839A
Cited
US3036979A
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US3148167A
Cited
US3204013A
Cited
US3210318A
Cited
US3281379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |