US3780132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer composition containing epoxide resins,phenol formaldehyde resin,tetraalkyl silicates,and silane coupling agents
Assignee: EIDP Inc
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Filing: 1971-12-22
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Granted: 1973-12-18
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Expires: 1991-12-22
Abstract
Abstract THE PRIMER COMPOSITION IS UTILIZED AS A PRIMER FOR ALUMINUM SHEETS WHICH ARE BONDED TOGETHER WITH AN EPOXY ADHESIVE OR AS A PRIMER FOR AN ALUMINUM SHEET WHICH IS BONDED TO AN ALUMINUM HONEYCOMB STRUCTURE; THE PRIMER IS A SOLUTION CONTAINING A HEAT REACTIVE PHENOL/ FORMALDEHYDE RESIN, ONE OR MORE EPOXY RESINS, A TETRAALKYL SILICATE AND ASILANE COUPLING AGENT.
Inventors
- 👤 J Lohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:30
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/38; C09; C09D; C09D161/00; C09D161/04; C09D161/06; C09D163/00; C09D163/04; C08L63/00; C08L63/04
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |