US3442974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosettable epoxides containing isocyanate blocked with phenol-formaldehyde novolacs
Assignee: Dow Chemical Co
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Filing: 1965-05-17
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Granted: 1969-05-06
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Bart J Bremmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:25
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8083; C08G18/28; C08G18/40; C08G18/54; C08G18/542; C08G18/58; C08G18/581; C08G18/8003; C08G18/8006; C08G18/8009; C08G18/8012; C08G18/8019; C08G18/8054; C08L; C08L63/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB763347A
Cited
US2906717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |