Patent US3384260A successfully refreshed from Google Patents.
US3474081A
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Methyl methacrylate polymer and process for making same
Assignee: EIDP Inc
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Filing: 1966-03-14
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Granted: 1969-10-21
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Robert T Bosworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:54
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/14; C08F2/00; C08F2/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2204517A
Cited
US2391393A
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US2689982A
Cited
US3234303A
Cited
US3084068A
Cited
US3252950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |