US2802268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of caulking fissures
Assignee: Vivadent Corp
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Filing: 1952-03-04
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Granted: 1957-08-13
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Expires: 1972-03-04
Abstract
No abstract record available.
Inventors
- 👤 Knappwost Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:54
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/20; A61K6/80; A61K6/849; A61K6/853; A61K6/876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF CAULKING A FISSURE WHICH COMPRISES CONTACTING IN SAID FISSURE AN AQUEOUS SOLUTION OF A SILICOFLUORIDE OF A METAL OF WHICH THE FLUORIDE IS WATER-INSOLUBLE WITH AN AQUEOUS SUSPENSION OF THE HYDROXIDE OF AN ALKALI WHICH FORMS A WATER-INSOLUBLE FLUORIDE, WHEREBY SAID METAL SILICO-FLUORIDE REACTS WITH SAID ALKALI HYDROXIDE TO DEPOSIT IN SAID FISSURE THE INSOLUBLE FLUORIDE OF SAID METAL, SILICA AND THE FLUORIDE OF SAID ALKALI.
Claim 2
Independent Claim
69 words
THE METHOD OF CAULKING A FISSURE WHICH COMPRISES CONTACTING IN SAID FISSURE AN AQUEOUS SOLUTION OF A SILICOFLUORIDE OF A METAL OF WHICH THE FLUORIDE IS WATER-INSOLUBLE WITH AN AQUEOUS SUSPENSION OF THE HYDROXIDE OF AN ALKALI WHICH FORMS A WATER-INSOLUBLE FLUORIDE, WHEREBY SAID METAL SILICO-FLUORIDE REACTS WITH SAID ALKALI HYDROXIDE TO DEPOSIT IN SAID FISSURE THE INSOLUBLE FLUORIDE OF SAID METAL, SILICA AND THE FLUORIDE OF SAID ALKALI.
References Cited (Backward Citations)
US1792200A
Cited
FR947290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |