US3345265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple layer tablet with calcium salt central core separated from soluble fluoride outer coating
Assignee: Kendall Co
•
Filing: 1963-10-09
•
Granted: 1967-10-03
•
Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Marcus G Grodberg
- 👤 James R Mellberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; A61K9/2086; A61K9/209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A TABLET CONSISTING ESSENTIALLY OF A CENTRAL CORE, A SUBSTANTIALLY SOLUBLE COATING SURROUNDING AND ENVELOPING SAID CORE, SAID CORE INCLUDING A NON-TOXIC ABSORBABLE CALCIUM SALT, SAID COATING INCLUDING A NON-TOXIC SOLUBLE FLUORIDE IN A COATING MATERIAL INERT TO SAID SOLUBLE FLUORIDE, SAID CALCIUM-CONTAINING CORE BEING SEPARATED FROM AT LEAST 90% OF THE FLUORIDE IN SAID FLUORIDE-CONTAINING COATING BY AT LEAST ONE CALCIUM-FREE LAYER CONTAINING NOT MORE THAN 10% OF THE TOTAL FLUORIDE, SAID TABLET BEING DISINTEGRABLE BY SUCCESSIVE EXPOSURE TO SALIVARY, GASTRIC AND INTESTINAL
Claim 2
Dependent Claim
84 words
A TABLET CONSISTING ESSENTIALLY OF A CENTRAL CORE, A SUBSTANTIALLY SOLUBLE COATING SURROUNDING AND ENVELOPING SAID CORE, SAID CORE INCLUDING A NON-TOXIC ABSORBABLE CALCIUM SALT, SAID COATING INCLUDING A NON-TOXIC SOLUBLE FLUORIDE IN A COATING MATERIAL INERT TO SAID SOLUBLE FLUORIDE, SAID CALCIUM-CONTAINING CORE BEING SEPARATED FROM AT LEAST 90% OF THE FLUORIDE IN SAID FLUORIDE-CONTAINING COATING BY AT LEAST ONE CALCIUM-FREE LAYER CONTAINING NOT MORE THAN 10% OF THE TOTAL FLUORIDE, SAID TABLET BEING DISINTEGRABLE BY SUCCESSIVE EXPOSURE TO SALIVARY, GASTRIC AND INTESTINAL
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |