US3194783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica-resin direct filling material and method of preparation
Assignee: Individual
•
Filing: 1962-05-01
•
Granted: 1965-07-13
•
Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Rafael L Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A DENTAL FILLING MATERIAL COMPRISING ABOUT 70% TO ABOUT 83% BY WEIGHT OF A FILLER AND ABOUT 30% TO ABOUT 17% BY WEIGHT OF A HARDENABLE RESIN; SAID FILLER COMPRISING A MIXTURE OF FUSED SILICA AND A PEROXIDE CATALYST; SAID RESIN COMPRISING THE CONDENSATION PRODUCT OF A SALT OF A POLYHYDRIC PHENOL WITH THE REACTION PRODUCT OF HYDROCHLORIC ACID AND AT LEAST ONE MEMBER OF THE CLASS CONSISTING OF GLYCIDYL METHACRYLATE AND GLYCIDYL ACRYLATE, AND A TERTIARY AMINE FOR PRODUCING FREE RADICALS UPON REACTING WITH SAID PEROXIDE CATALYST IN SAID FILLER.
Claim 2
Dependent Claim
91 words
A DENTAL FILLING MATERIAL COMPRISING ABOUT 70% TO ABOUT 83% BY WEIGHT OF A FILLER AND ABOUT 30% TO ABOUT 17% BY WEIGHT OF A HARDENABLE RESIN; SAID FILLER COMPRISING A MIXTURE OF FUSED SILICA AND A PEROXIDE CATALYST; SAID RESIN COMPRISING THE CONDENSATION PRODUCT OF A SALT OF A POLYHYDRIC PHENOL WITH THE REACTION PRODUCT OF HYDROCHLORIC ACID AND AT LEAST ONE MEMBER OF THE CLASS CONSISTING OF GLYCIDYL METHACRYLATE AND GLYCIDYL ACRYLATE, AND A TERTIARY AMINE FOR PRODUCING FREE RADICALS UPON REACTING WITH SAID PEROXIDE CATALYST IN SAID FILLER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |