Patent US5424709A successfully refreshed from Google Patents.
Patent US3582516A successfully refreshed from Google Patents.
US3582516A
Expired / Lapsed
US
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Epoxy resins from alkylated phenol novolac resins
Assignee: Monsanto Co
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Filing: 1969-03-20
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Granted: 1971-06-01
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Expires: 1989-03-20
Abstract
Abstract IMPROVED EPOXY NOVOLAC RESINS PRODUCED BY FIRST REACTING EPICHLOROHYDRIN WITH AN ALKYLATED PHENOL ALDEHYDE NOVOLAC RESIN WHEREIN SAID ALKYLATE IS A SPECIFIC MIXTURE OF CYLOPENTADIENE CODIMER COMPOUNDS, AND THEREAFTER DEHYDROHALOGENATING THE RESULTING PRODUCT.
Inventors
- 👤 John R Leblanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:16
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/08; C08G8/00; C08G8/04; C08G8/08; C08G8/10; C08G8/12; C08G8/28; C08G8/30
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |