US3315010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture of an epoxy resin and an o-toluidine-aldehyde condensate
Assignee: GAF Chemicals Corp
•
Filing: 1962-05-23
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Granted: 1967-04-18
•
Expires: 1982-05-23
Abstract
No abstract record available.
Inventors
- 👤 David E Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:54
CPC Classifications
C; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A COMPOSITION CONSISTING ESSENTAILLY OF A HARDENED MIXTURE OF AN EPOXY RESIN COMPRISING A POLYGLYCIDYL ETHER OF A POLYOL AND A CONDENSATION PRODUCT OF SUBSTANTIALLY EQUI-MOLAR AMOUNTS OF O-TOLUIDINE AND FORMALDEHYDE CONDENSED IN THE PRESENCE OF AN ACID IN AMOUNT AT LEAST EQUAL TO THE COMBINED MOLS OF O-TOLUIDINE AND FORMALDEHYDE.
Claim 2
Dependent Claim
51 words
A COMPOSITION CONSISTING ESSENTAILLY OF A HARDENED MIXTURE OF AN EPOXY RESIN COMPRISING A POLYGLYCIDYL ETHER OF A POLYOL AND A CONDENSATION PRODUCT OF SUBSTANTIALLY EQUI-MOLAR AMOUNTS OF O-TOLUIDINE AND FORMALDEHYDE CONDENSED IN THE PRESENCE OF AN ACID IN AMOUNT AT LEAST EQUAL TO THE COMBINED MOLS OF O-TOLUIDINE AND FORMALDEHYDE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |