Patent US3883647A successfully refreshed from Google Patents.
US3883647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tablet formulation
Assignee: Ives Lab
•
Filing: 1972-12-06
•
Granted: 1975-05-13
•
Expires: 1992-12-06
Abstract
Abstract The disclosure is directed to formulations for tablets which are to be deeply grooved to facilitate breaking into predetermined portions by the user. A critical tablet weight for deeply grooved tablets is disclosed.
Inventors
- 👤 Ehud Geller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:56
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; A61J; A61J3/00; A61J3/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A PHARMACEUTICAL TABLET WHICH IS ADEQUATELY IMPRINTED WITH INDICIA OR EMBOSING AND SCORED TO FORM A GROOVE WHICH IS ONE-THIRD TO TWO-THIRDS THE DEPTH OF THE TOTAL TABLET THICKNES TO FACTILITATE SEPARATION INTO SUBDIVISIONS CONTAINING SUBSTANTIALLY EQUAL AMOUNTS OF A PHARMACEUTICALLY ACTIVE INGREDIENT COMPRISING A DIRECTLY COMPRESSED FORMULATION OF 5 TO 10 MILLIGRAMS OF AN ACTIVE INGREDIENT, THE REMAINDER BEING 45 TO 99.7 PERCENT BY WEIGHT OF MICROCRYSTALLINE CELLULOSE AND 0.3 TO 0.4 PERCENT BY WEIGHT OF MAGNESIUM STEARATE, ALONG WITH FILLERS, EXTENDERS, FLAVORING AND THE LIKE.
Claim 2
Dependent Claim
87 words
A PHARMACEUTICAL TABLET WHICH IS ADEQUATELY IMPRINTED WITH INDICIA OR EMBOSING AND SCORED TO FORM A GROOVE WHICH IS ONE-THIRD TO TWO-THIRDS THE DEPTH OF THE TOTAL TABLET THICKNES TO FACTILITATE SEPARATION INTO SUBDIVISIONS CONTAINING SUBSTANTIALLY EQUAL AMOUNTS OF A PHARMACEUTICALLY ACTIVE INGREDIENT COMPRISING A DIRECTLY COMPRESSED FORMULATION OF 5 TO 10 MILLIGRAMS OF AN ACTIVE INGREDIENT, THE REMAINDER BEING 45 TO 99.7 PERCENT BY WEIGHT OF MICROCRYSTALLINE CELLULOSE AND 0.3 TO 0.4 PERCENT BY WEIGHT OF MAGNESIUM STEARATE, ALONG WITH FILLERS, EXTENDERS, FLAVORING AND THE LIKE.
Claim 3
Dependent Claim
18 words
The tablet as defined in claim 1 in which the total tablet weight is 150 to 175 milligrams.
Claim 4
Dependent Claim
17 words
A tablet as defined in claim 1 in which the total tablet weight is about 175 milligrams.
Claim 5
Dependent Claim
36 words
A tablet as defined in claim 1 in which the microcrystalline cellulose is present in the amount of 60 percent by weight and the magnesium stearate is present in the amount of 0.35 percent by weight.
Claim 6
Dependent Claim
20 words
A tablet as defined in claim 1 in which the active ingredient is 5 to 10 milligrams of isosorbide dinitrate.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |