Patent USRE27093E successfully refreshed from Google Patents.
USRE27093E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thick, cured polymethyl methacrylate article and process for its preparation
Assignee: GAME TIME Inc A CORP OF AL
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Filing: 1970-02-02
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Granted: 1971-03-23
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Expires: 1990-02-02
Abstract
Abstract THE USE OF AT LEAST 40% OF AN INERT FILLER, E.G., CALCIUM CABONATE, CALCIUM SULFATE, CLAY, SILICA, CALCIUM SILICATE, ETC. ALONG WITH A HEMI-PERESTER OF MALEIC ACID CATALYST IN THE POLYMERIZATION AND CURING OF METHYL METHACRYLATECONTAINING SIRUPS PROVIDES A PROCESS FOR FORMING THICK (1/4" TO 2" OR MORE) ARTICLES OF POLYMERIC METHYL METHACRYLATE WITHIN REASONABLE PERIODS AND AT MODERATE TEMPERATURES.
Inventors
- 👤 Donald H Slocum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:39
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |