US3266147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cavity liners
Assignee: Individual
•
Filing: 1962-07-02
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Granted: 1966-08-16
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Henry M Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
A; A61; A61C; A61C5/00; A61K; A61K49/00; A61K49/04; A61K6/00; A61K6/80; A61K6/849; A61K6/876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A LINER FOR A TOOTH CAVITY THAT HAS BEEN PREPARED FOR FILLING AND PARTICULAR FOR USE IN PLACE OF A CEMENT BASE WHERE THERE ARE DEEP-SEATED DEFECTS CAUSE BY CARRIES, SAID LINER COMPRISING A THIN, FLEXIBLE SHEET AND FIRST AND SECOND INTIMATELY MIXED SUBSTANCES CARRIED BY SAID SHEET AS DRY COATING, EACH BEING DRY AND DISTRIBUTED THROUGHT THE AREA OF THE SHEET SO THAT EACH SUBSTANCE BECOMES A COAT FOR THE CAVITY WHEN THE LINER IS APPLIED THERETO, SAID FIRST SUBSTANCE BEING CALCIUM HYDROXIDE AND THE SECOND SUBSTANCE BEING OPAQUE TO X-RAYS AND INERT WITH RESPECT TO THE FIRST SUBSTANCE AND BEING AT LEAST ONE OF THE INDICATORS FROM THE GROUP CONSISTING OF BARIUM SULFATE, BISMUTH SUB-NITRATE, AND BISMUTH SUB-CARBONATE.
Claim 2
Dependent Claim
120 words
A LINER FOR A TOOTH CAVITY THAT HAS BEEN PREPARED FOR FILLING AND PARTICULAR FOR USE IN PLACE OF A CEMENT BASE WHERE THERE ARE DEEP-SEATED DEFECTS CAUSE BY CARRIES, SAID LINER COMPRISING A THIN, FLEXIBLE SHEET AND FIRST AND SECOND INTIMATELY MIXED SUBSTANCES CARRIED BY SAID SHEET AS DRY COATING, EACH BEING DRY AND DISTRIBUTED THROUGHT THE AREA OF THE SHEET SO THAT EACH SUBSTANCE BECOMES A COAT FOR THE CAVITY WHEN THE LINER IS APPLIED THERETO, SAID FIRST SUBSTANCE BEING CALCIUM HYDROXIDE AND THE SECOND SUBSTANCE BEING OPAQUE TO X-RAYS AND INERT WITH RESPECT TO THE FIRST SUBSTANCE AND BEING AT LEAST ONE OF THE INDICATORS FROM THE GROUP CONSISTING OF BARIUM SULFATE, BISMUTH SUB-NITRATE, AND BISMUTH SUB-CARBONATE.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |