Patent US3693163A successfully refreshed from Google Patents.
US3597389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture resistant dental restorative compositions
Assignee: 3M Co
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Filing: 1968-03-15
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Granted: 1971-08-03
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Expires: 1988-03-15
Abstract
Abstract DENTAL COMPOSITIONS ARE PROVIDED OF INORGANIC PAR TICULATE MATERIAL AS FILLER, TERTIARY AROMATIC AMINE AS POTENTIAL ACCELERATOR AND, AS VEHICLES OR BINDERS, METHACRYLATE ESTERS OF AROMATIC OR UNSATURATED LOWER ALIPHATIC DIACID HEMIESTERS WITH DI- OR TRI-PRIMARY DIOLS OR TRIOLS. POLYMERIZATION IS INITIATED IN THESE COMBINATIONS BY FREE RADICAL GENERATING CATALYSTS TO GIVE PRODUCTS WHICH HAVE RELATIVELY LOW SENSITIVITY TO MOISTURE AND ARE USEFULLY EMPLOYED IN DENTAL CAVITIES AS FILLINGS.
Inventors
- 👤 Charles W Taylor Mfg Co Us
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:03
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |