Patent US3707771A successfully refreshed from Google Patents.
US3707771A
Expired / Lapsed
US
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Means for detecting dental occlusions and method of use
Assignee: Individual
•
Filing: 1970-12-21
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Granted: 1973-01-02
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Expires: 1990-12-21
Abstract
Abstract An aerosol spray-on composition of matter comprising essentially of powdered calcium carbonate in a compatible aerosol propellant such as freon. Additional compatible agents such as an adhesive (benzoin), food-dye, and flavoring (peppermint) may also be added to the powder before suspension in the freon. In use, the powder in suspension is deposited in a thin film on the occluding surfaces of the teeth, the propellant evaporating in the air during propulsion. The broken film indicates the areas of occlusion after the mouth is naturally closed until the teeth meet, and high points in the fitting of dental work.
Inventors
- 👤 H Guerra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:39
CPC Classifications
A; A61; A61C; A61C9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3567131A
Cited
US3421223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |