Patent US3047408A successfully refreshed from Google Patents.
US3047408A
Expired / Lapsed
US
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Dental cement material
Assignee: L D CAULK Co
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Filing: 1959-11-10
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Granted: 1962-07-31
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Expires: 1979-11-10
Abstract
No abstract record available.
Inventors
- 👤 Emery W Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:07
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/70; A61K6/78; A61K6/80; A61K6/849; A61K6/876; A61K6/884; A61K6/887; A61K6/889
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A DENTAL COMPOSITION CONSISTING ESSENTIALLY OF CALCIUM HYDROXIDE AND AN ESTER OF A POLYHYDRIC ALCOHOL AND SALICYLIC ACID, THE CALCIUM HYDROXIDE BEING PRESENT IN STOICHIOMETRIC EXCESS OVER SAID ESTER AND SAID CALCIUM HYDROXIDE BEING REACTABLE TO FORM A HARD, RIGID AND PERMEABLE MASS OF A CALCIUM PHENOLATE CONTAINING AVAILABLE CALCIUM HYDROXIDE DISPERSED THEREIN.
Claim 2
Dependent Claim
53 words
A DENTAL COMPOSITION CONSISTING ESSENTIALLY OF CALCIUM HYDROXIDE AND AN ESTER OF A POLYHYDRIC ALCOHOL AND SALICYLIC ACID, THE CALCIUM HYDROXIDE BEING PRESENT IN STOICHIOMETRIC EXCESS OVER SAID ESTER AND SAID CALCIUM HYDROXIDE BEING REACTABLE TO FORM A HARD, RIGID AND PERMEABLE MASS OF A CALCIUM PHENOLATE CONTAINING AVAILABLE CALCIUM HYDROXIDE DISPERSED THEREIN.
References Cited (Backward Citations)
US2379290A
Cited
US2397498A
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US2523867A
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US2516438A
Cited
US2770648A
Cited
US2936242A
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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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |