US5084267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release compositions for treating periodontal disease
Assignee: Procter and Gamble Co
•
Filing: 1989-11-17
•
Granted: 1992-01-28
•
Expires: 2009-11-17
Abstract
Abstract This invention relates to compositions/devices and methods for treating diseases of the oral cavity in humans and lower animals using polypropenoic acid compositions/devices for releasing drugs in the oral cavity.
Inventors
- 👤 Nalinkant C. Damani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0063; A61K47/00; A61K47/30; A61K9/20; A61P; A61P1/00; A61P1/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
43 words
A composition suitable for insertion into or around the periodontal pocket of a person or lower animal suffering from diseases of the oral cavity comprising polypropenoic acid crosslinked with less than about 0.004 mole percent of crosslinking agent and a tetracycline drug active.
Claim 2
Dependent Claim
43 words
A composition suitable for insertion into or around the periodontal pocket of a person or lower animal suffering from diseases of the oral cavity comprising polypropenoic acid crosslinked with less than about 0.004 mole percent of crosslinking agent and a tetracycline drug active.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein the concentration of the drug active is from about 10% to about 50%.
Claim 4
Dependent Claim
12 words
A composition according to claim 1 which in addition contains another polymer.
Claim 5
Dependent Claim
34 words
A method of treating periodontal disease in a person or lower animal suffering from such disease by placing a composition according to claim 1 into the periodontal pocket of said person or lower animal.
Claim 6
Dependent Claim
49 words
A method according to claim 4 wherein the composition is formed into a shape having a width of from about 0.1 mm to about 5 mm, a thickness of from about 0.01 mm to about 2 mm and a length of from about 1 mm to about 15 mm.
References Cited (Backward Citations)
US3867190A
Cited
US4226848A
Cited
US4250163A
Cited
US4454110A
Cited
US4568535A
Cited
US4569837A
Cited
US4685883A
Cited
EP0140766A2
Cited
US4764377A
Cited
US4892736A
Cited
US4615697A
Cited
US4795436A
Cited
US4568536A
Cited
US4650665A
Cited
US4603076A
Cited
US4644018A
Cited
US4670252A
Cited
US4699823A
Cited
EP0241178A1
Cited
US4933182A
Cited
US4839215A
Cited
US4725629A
Cited
US4725628A
Cited
US4769414A
Cited
JPS6379817A
Cited
US4863970A
Cited
US4900554A
Cited
US4818534A
Cited
JPS63287719A
Cited
EP0297535A2
Cited
US4900552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |