US4086335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical tablets containing chitin as a disintegrant
Assignee: Individual
•
Filing: 1975-10-29
•
Granted: 1978-04-25
•
Expires: 1995-10-29
Abstract
Abstract A pharmaceutically-active ingredient is thoroughly mixed with from about 2 to about 20 percent by weight of chitin, and the mixture is fabricated into a tablet by standard means such as direct compression or wet granulation techniques. The tablet exhibits highly beneficial disintegration properties.
Inventors
- 👤 Frank N. Bruscato
- 👤 August G. Danti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:30
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
A method of causing a pharmaceutical tablet to disintegrate upon being administered to an animal, which comprises administering to the animal a tablet fabricated from a mixture containing a pharmaceutically-active ingredient and a disintegratingly-effective amount of chitin.
Claim 2
Independent Claim
37 words
A method of causing a pharmaceutical tablet to disintegrate upon being administered to an animal, which comprises administering to the animal a tablet fabricated from a mixture containing a pharmaceutically-active ingredient and a disintegratingly-effective amount of chitin.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein the chitin is present in the mixture in an amount sufficient to provide from about 2 to about 20 percent by weight.
References Cited (Backward Citations)
US3181998A
Cited
US3257275A
Cited
US3632754A
Cited
US3903268A
Cited
US3911116A
Cited
US3725556A
Cited
US3914413A
Cited
US3879377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |