US3770811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diacrylate esters of hydrogenated bis-phenol and tolylene
Assignee: Individual
•
Filing: 1973-03-23
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Granted: 1973-11-06
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Expires: 1993-03-23
Abstract
Abstract COMPOUNDS OF THE FORMULA: CH2=C(-R1)-COO-R-OOC-C(-R1)=CH2 WHEREIN R IS SELECTED FROM ((-)(1,4-CYCLOHEXYLENE))2-C(-CH3)2, 1,4-DI((-)CH2-)CYCLO- HEXANE, ((-)CH2-(1,4-PHENYLENE))2-O, AND 1,4-DI((-)CH2-)BENZENE AND R1 IS HYDROGEN, LOWER ALKYL, OR HALOGEN, ARE UTILIZED AS BINDERS IN DENTAL RESTORATIVE COMPOSITIONS. THE COMPOUNDS ARE PREPARED BY THE REACTION OF AN ACRYL CHLORIDE AND DERIVATIVES THEREOF WITH THE APPROPRIATE DIOL.
Inventors
- 👤 H Lee
- 👤 D Stoffey
- 👤 A Stang
- 👤 J Orlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:47
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |