Patent US3918160A successfully refreshed from Google Patents.
US3918160A
Expired / Lapsed
US
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Coating and method for marking teeth
Assignee: Individual
•
Filing: 1973-07-09
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Granted: 1975-11-11
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Expires: 1993-07-09
Abstract
Abstract Pressure sensitive coatings are applied to opposing occluding surfaces of teeth. The coating includes a plurality of dispersed cells each of which contains one of two chemically interactive substances. These cells rupture in response to application of occlusal pressure thereto, the substances of the ruptured cells chemically interacting and producing localized stained areas at locations of premature tooth contact between upper and lower teeth.
Inventors
- 👤 Abraham Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:48
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/04; A61C19/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
Method of marking tooth contact points on occlusion, comprising the step of applying a pressure sensitive coating to at least one of two opposing occluding teeth, said coating including a plurality of dispersed cells each containing a one of two chemically interactive substances, said cells being rupturable in response to application of occlusal pressure thereto, whereby the substances of the ruptured cells chemically interact and produce localized stained areas at locations of premature tooth contact points between upper and lower teeth.
Claim 2
Dependent Claim
81 words
Method of marking tooth contact points on occlusion, comprising the step of applying a pressure sensitive coating to at least one of two opposing occluding teeth, said coating including a plurality of dispersed cells each containing a one of two chemically interactive substances, said cells being rupturable in response to application of occlusal pressure thereto, whereby the substances of the ruptured cells chemically interact and produce localized stained areas at locations of premature tooth contact points between upper and lower teeth.
Claim 3
Dependent Claim
24 words
Method of marking tooth contact points as defined in claim 1, wherein the coating is applied to both opposing occlusal surfaces of the teeth.
Claim 4
Dependent Claim
55 words
Method of marking tooth contact points as defined in claim 1, wherein the coating is in a rapidly drying liquid form, the method of further comprising the step of waiting after the applying step until the coating has substantially dried before causing the occluding surfaces to come into contact with each other in pressure relation.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |