Patent US2878129A successfully refreshed from Google Patents.
US2878129A
Expired / Lapsed
US
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Dental impression material
Assignee: Kerr Corp
•
Filing: 1953-12-07
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Granted: 1959-03-17
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Expires: 1973-12-07
Abstract
No abstract record available.
Inventors
- 👤 Rabchuk Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A COMPOSITION CONSISTING ESSENTIALLY OF A GEL-FORMING AGENT OF THE CLASS CONSISTING OF WATER-SOLUBLE ALGINATES, PECTATES, PECTINS AND CARBOXY METHYL CELLULOSE AND BASIC LEAD SILICATE SULFATE.
Claim 2
Dependent Claim
26 words
A COMPOSITION CONSISTING ESSENTIALLY OF A GEL-FORMING AGENT OF THE CLASS CONSISTING OF WATER-SOLUBLE ALGINATES, PECTATES, PECTINS AND CARBOXY METHYL CELLULOSE AND BASIC LEAD SILICATE SULFATE.
References Cited (Backward Citations)
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US2623808A
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US2667464A
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US2631082A
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US2652312A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |