US4392828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for restoring a tooth
Assignee: AUSTENAL INTERNATIONAL Inc A CORP OF
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Filing: 1981-01-21
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Granted: 1983-07-12
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Expires: 2001-01-21
Abstract
Abstract A method for restoring a tooth which involves applying to the tooth a glass filler comprising a porous three-dimensional network of inorganic fibres bonded to each other at their points of contact and the porosity of which is substantially continuous throughout the network admixed with a polymeric material.
Inventors
- 👤 Lars E. M. Ehrnford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/12; A61C13/14; A61K; A61K6/00; A61K6/30; A61K6/70; A61K6/71; A61K6/77; A61K6/80; A61K6/884; A61K6/887; A61L; A61L27/00; A61L27/40; A61L27/44; A61L27/446
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A method of restoring a tooth which comprises applying thereto a dental composite comprising a particulate glass filler comprising a rigid and porous three-dimensional network of glass fibers produced by fusing together by heating the fibers having a diameter of less than 4 microns at a temperature sufficient to cause melting and complete fusion of substantially all of the individual glass fibers at their points of contact, the porosity of which is substantially continuous throughout the network, and mixed in an organic hardening resin; and allowing sufficient time for the hardening thereof.
Claim 2
Independent Claim
92 words
A method of restoring a tooth which comprises applying thereto a dental composite comprising a particulate glass filler comprising a rigid and porous three-dimensional network of glass fibers produced by fusing together by heating the fibers having a diameter of less than 4 microns at a temperature sufficient to cause melting and complete fusion of substantially all of the individual glass fibers at their points of contact, the porosity of which is substantially continuous throughout the network, and mixed in an organic hardening resin; and allowing sufficient time for the hardening thereof.
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) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |