Patent US2837434A successfully refreshed from Google Patents.
US2837434A
Expired / Lapsed
US
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Dental impression composition
Assignee: COE LAB Inc
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Filing: 1955-02-04
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Granted: 1958-06-03
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Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Robert S Grumbine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:55
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A DENTAL IMPRESSION COMPOSITION CONSISTING ESSENTIALLY OF A WATER-SOLUBLE ALGINATE, A COMPOUND CONTRIBUTING A CATION WHICH FORMS AN ELASTIC GEL WITH SAID ALGINATE AND ABOUT 2% TO ABOUT 14% BY WEIGHT OF POTASSIUM FERRIC FLUORIDE.
Claim 2
Dependent Claim
35 words
A DENTAL IMPRESSION COMPOSITION CONSISTING ESSENTIALLY OF A WATER-SOLUBLE ALGINATE, A COMPOUND CONTRIBUTING A CATION WHICH FORMS AN ELASTIC GEL WITH SAID ALGINATE AND ABOUT 2% TO ABOUT 14% BY WEIGHT OF POTASSIUM FERRIC FLUORIDE.
References Cited (Backward Citations)
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Cited
US2165680A
Cited
US2623808A
Cited
US2678280A
Cited
US2628153A
Cited
US2652312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |