US3317474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latent catalysts for acid-catalyzed reactions
Assignee: Gulf Oil Corp
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Filing: 1963-05-21
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Granted: 1967-05-02
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Expires: 1983-05-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph W Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08L; C08L67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A COMPOSITION COMPRISING AN ACID CURABLE RESIN PRECONDENSATE SELECTED FROM THE GROUP CONSISTING OF UREAFORMALDEHYDE RESIN, MELAMINE-FORMALDEHYDE RESIN, UREAMELAMINE RESIN, PHENOL-FORMALDEHYDE RESIN, AND A POLYESTER RESIN CONTAINING A FORMALDEHYDE DERIVATIVE CROSSLINKING AGENT, AND FURTHER COMPRISING A LATENT CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
49 words
A COMPOSITION COMPRISING AN ACID CURABLE RESIN PRECONDENSATE SELECTED FROM THE GROUP CONSISTING OF UREAFORMALDEHYDE RESIN, MELAMINE-FORMALDEHYDE RESIN, UREAMELAMINE RESIN, PHENOL-FORMALDEHYDE RESIN, AND A POLYESTER RESIN CONTAINING A FORMALDEHYDE DERIVATIVE CROSSLINKING AGENT, AND FURTHER COMPRISING A LATENT CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA:
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |