US3846542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic tooth-filling composition containing boric acid-releasing compound
Assignee: Kulzer GmbH
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Filing: 1972-01-04
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Granted: 1974-11-05
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Expires: 1992-01-04
Abstract
Abstract A tooth-filling composition non-toxic to tooth pulp comprising an acrylic-based filling composition containing boric acid or a compound of boron, such as tributyl borate, that liberates boric acid.
Inventors
- 👤 A Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:36
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/70; A61K6/78; A61K6/60; A61K6/69; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
IN A TOOTH-FILLING COMPOSITION COMPRISING A MONOMERIC ACRYLIC POLYMERIZABLE LIQUID TOXIC TO TOOTH PULP AND SUITED FOR USE IN DENTAL FILLING MATERIALS, AND A REDOX SYSTEM CURING AGENT, THE IMPROVEMENT WHICH COMPRISES ADDING A BORIC ACID ALKYL ESTER, SAID COMPOUND BEING DISSOLVED IN SAID MONOMERIC ACRYLIC POLYMERIZABLE LIQUID IN A NON TOXIC AMOUNT SUFFICIENT TO PROTECT THE TOOTH PULP OF A PREPARED TOOTH WHEN USING SAID TOOTHFILLING COMPOSITION THEREIN.
Claim 2
Dependent Claim
69 words
IN A TOOTH-FILLING COMPOSITION COMPRISING A MONOMERIC ACRYLIC POLYMERIZABLE LIQUID TOXIC TO TOOTH PULP AND SUITED FOR USE IN DENTAL FILLING MATERIALS, AND A REDOX SYSTEM CURING AGENT, THE IMPROVEMENT WHICH COMPRISES ADDING A BORIC ACID ALKYL ESTER, SAID COMPOUND BEING DISSOLVED IN SAID MONOMERIC ACRYLIC POLYMERIZABLE LIQUID IN A NON TOXIC AMOUNT SUFFICIENT TO PROTECT THE TOOTH PULP OF A PREPARED TOOTH WHEN USING SAID TOOTHFILLING COMPOSITION THEREIN.
Claim 3
Dependent Claim
31 words
The tooth-filling composition of claim 1 wherein said ester is present in a quantity in the range of 0.01 to 5 weight percent, calculated on the polymerizable liquid of said composition.
Claim 4
Dependent Claim
24 words
The tooth-filling composition of claim 2 wherein said ester supplying boric acid is selected from the group consisting of tri-butyl borate and tri-octyl borate.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |