Patent US3558560A successfully refreshed from Google Patents.
US3558560A
Expired / Lapsed
US
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Composition consisting of novolac resins and aromatic polycarboxylic compounds
Assignee: Monsanto Co
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Filing: 1969-01-21
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Granted: 1971-01-26
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Expires: 1989-01-21
Abstract
Abstract THERMOSETTABLE POLYMERIC COMPOSITIONS INCORPORATING A NOVOLAC RESIN AND AN AROMATIC POLYCARBOXYLIC COMPOUND. WHEN THERMOSET BY HEAT, THESE COMPOSITIONS DISPLAY IMPROVED THERMAL STABILITY.
Inventors
- 👤 Rodney M Huck
- 👤 John R Le Blanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:00
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1535; C08K5/1539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |