US3321101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament-wound hollow cylindrical articles
Assignee: Individual
•
Filing: 1964-08-13
•
Granted: 1967-05-23
•
Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 James R Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:23
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A FILAMENT-WOUND HOLLOW ARTICLE HAVING A CURVED WALL FORMED SUBSTANTIALLY OF FIBER WINDING AND AN EPOXIDE RESIN WHICH IS THE FULLY CURED REACTION PRODUCT OF EQUIVALENT AMOUNTS OF THE DIGLYCIDYL ETHER IN BISPHENOL A AND META-AMINOBENZYLAMINE, SAID EPOXIDE RESIN BEING COATED ON AND BONDING SAID FIBER WINDINGS TOGETHER.
Claim 2
Dependent Claim
48 words
A FILAMENT-WOUND HOLLOW ARTICLE HAVING A CURVED WALL FORMED SUBSTANTIALLY OF FIBER WINDING AND AN EPOXIDE RESIN WHICH IS THE FULLY CURED REACTION PRODUCT OF EQUIVALENT AMOUNTS OF THE DIGLYCIDYL ETHER IN BISPHENOL A AND META-AMINOBENZYLAMINE, SAID EPOXIDE RESIN BEING COATED ON AND BONDING SAID FIBER WINDINGS TOGETHER.
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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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |