US4715369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating an injured part on the oral mucosa and the covering material for use thereof
Assignee: Teijin Ltd
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Filing: 1987-02-09
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Granted: 1987-12-29
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Expires: 2007-02-09
Abstract
Abstract The present invention relates to a method for treating an injured part on the oral mucosa, which comprises covering the injured part with a covering material consisting essentially of a cellulose lower alkyl ether and a polyacrylic acid or its pharmaceutically acceptable salt, and to said covering material. According to the present invention, without using a medicament, the injured part on an oral mucosa can be cured rather rapidly simply by covering the injured part.
Inventors
- 👤 Yoshiki Suzuki
- 👤 Hiroshi Ikura
- 👤 Gentaro Yamashita
- 👤 Tsuneji Nagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/24; A61K; A61K31/00; A61K31/74; A61K31/765; A61K31/78; A61K9/00; A61K9/0012; A61K9/0053; A61K9/006; A61L15/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A method for treating an injured part on the oral mucosa, which comprises covering the injured part with a covering material consisting of a medicament-free adhesive layer consisting essentially of cellulose lower alkyl ether and polyacrylic acid or its pharmaceutically acceptable salt and a medicament-free nonadhesive layer which has no adhesion to the wet surface of the oral mucosa.
Claim 2
Independent Claim
59 words
A method for treating an injured part on the oral mucosa, which comprises covering the injured part with a covering material consisting of a medicament-free adhesive layer consisting essentially of cellulose lower alkyl ether and polyacrylic acid or its pharmaceutically acceptable salt and a medicament-free nonadhesive layer which has no adhesion to the wet surface of the oral mucosa.
Claim 3
Dependent Claim
24 words
A method for treating an injured part on the oral mucosa according to claim 1, wherein the nonadhesive layer comprises water-soluble or water-disintegrable components.
Claim 4
Dependent Claim
62 words
A method for treating an injured part on the oral mucosa according to claim 2, wherein the nonadhesive layer comprises one or more than one kinds of components selected from the group consisting of lactose, glucose, sucrose, starch, crystalline cellulose, dextrin, cyclodextrin, silicic acid anhydride, talc, calcium stearate, magnesium stearate, bees wax, polyethylene glycol, polyphosphate, anhydrous calcium phosphate and carboxymethyl cellulose calcium.
References Cited (Backward Citations)
US4292299A
Cited
US4250163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |