US3380963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron- and nitrogen-containing catalyst and mixtures thereof with an epoxy resin
Assignee: Westinghouse Electric Corp
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Filing: 1965-03-12
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Granted: 1968-04-30
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Expires: 1985-03-12
Abstract
No abstract record available.
Inventors
- 👤 William R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:46
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A BORON- AND NITROGEN-CONTAINING CATALYST ADAPTED FOR THE CURING OF A RESIN SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL POLYETHER RESINS, GLYCIDYL POLYETHERNOVOLAK RESINS, AND MIXTURES THEREOF COMPRISING THE PRODUCT OF REACTION OF (A) FROM 1 MOL TO 2 MOLS OF AT LEAST ONE BORON COMPOUND SELECTED FROM THE GROUP CONSISTING OF (I) POLYBORATE ESTERS HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
64 words
A BORON- AND NITROGEN-CONTAINING CATALYST ADAPTED FOR THE CURING OF A RESIN SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL POLYETHER RESINS, GLYCIDYL POLYETHERNOVOLAK RESINS, AND MIXTURES THEREOF COMPRISING THE PRODUCT OF REACTION OF (A) FROM 1 MOL TO 2 MOLS OF AT LEAST ONE BORON COMPOUND SELECTED FROM THE GROUP CONSISTING OF (I) POLYBORATE ESTERS HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |