US3780156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making filled methyl methacrylate articles
Assignee: EIDP Inc
•
Filing: 1972-04-03
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Granted: 1973-12-18
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Expires: 1992-04-03
Abstract
Abstract DISCLOSED HEREIN IS A PROCESS FOR MAKING A HIGHLY FILLED POLYMETHYL METHACRYLATE ARTICLE CONTAINING 50 TO 80 PERCENT BY WEIGHT OF PARTICULATE HYDRATE OF ALUMINA AND 4 TO 20 PERCENT BY WEIGHT OF GLASS FILAMENTS.
Inventors
- 👤 D Cameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/14; C08F2/00; C08F2/44; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928
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 |