US3438931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic molding compositions
Assignee: Union Carbide Corp
•
Filing: 1964-12-14
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Granted: 1969-04-15
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Philip A Mitchell
- 👤 Carlo F Martino
- 👤 Lawrence G Imhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:17
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08L23/00; C08L23/02; C08L23/04; C08L23/10; C08L23/12; C08L23/16; C08L23/18; C08L23/20; C08L23/22; C08L9/00
Claims Analysis
Total Claims: 0
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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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |