US4486488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for the production of bandages, bandages produced therewith and method for the production thereof
Assignee: Beiersdorf AG
•
Filing: 1983-03-17
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Granted: 1984-12-04
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Expires: 2003-03-17
Abstract
Abstract A composition which is particularly useful in semi-rigid medical supporting bandages comprising 10 to 35% zinc oxide 2 to 15% cellulose ether 10 to 35% glycerin 30 to 75% water. The composition is coated onto at least one side of a suitable substrate to form the bandage and is irradiated in order to preserve sterility. Preferably, the radiation would take place after the bandages have been packaged.
Inventors
- 👤 Hanns Pietsch
- 👤 Volker Hohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:45
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/07; A61L15/08; A61L15/10; A61L15/12; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4056
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
23 words
A bandage comprising a substrate and a composition consisting by weight essentially of 10-35% zinc oxide 2-15% cellulose ether 10-35% glycerin 30-75% water.
Claim 2
Dependent Claim
23 words
A bandage comprising a substrate and a composition consisting by weight essentially of 10-35% zinc oxide 2-15% cellulose ether 10-35% glycerin 30-75% water.
Claim 3
Dependent Claim
21 words
The bandage of claim 1 wherein said composition consists essentially of 10-20% zinc oxide 3-5% cellulose ether 10-20% glycerin 60-70% water.
Claim 4
Dependent Claim
12 words
A bandage of claim 1 which has been subjected to energy-rich radiation.
Claim 5
Dependent Claim
11 words
A bandage of claim 3 wherein said radiation is gamma radiation.
Claim 6
Dependent Claim
16 words
A method for making the bandage of claim 1 comprising coating said composition onto said substrate.
Claim 7
Dependent Claim
17 words
A method of making the bandage of claim 2 which comprises coating said composition onto said substrate.
Claim 8
Dependent Claim
14 words
A method according to claim 5 wherein said composition is subjected to energy-rich radiation.
Claim 9
Dependent Claim
12 words
A method according to claim 7 wherein said radiation is gamma radiation.
Claim 10
Dependent Claim
21 words
A bandage of claim 1 wherein said ether has a viscosity of 50-50,000 mPas in 2% aqueous solution at room temperature.
Claim 11
Dependent Claim
11 words
A bandage of claim 9 wherein said viscosity is 50-12,000 mPas.
Claim 12
Dependent Claim
22 words
A bandage of claim 10 wherein said viscosity is about 2000 mPas and there is 3-5% of said ether in said composition.
Claim 13
Dependent Claim
22 words
A bandage of claim 1 wherein said ether is methylhydroxy ethyl cellulose, ethylhydroxy ethyl cellulose, hydroxypropylmethyl cellulose, methylhydroxypropyl cellulose and mixtures thereof.
Claim 14
Dependent Claim
14 words
A bandage of claim 1 wherein said composition has a viscosity of 1-100 Pas.
Claim 15
Dependent Claim
11 words
A bandage of claim 1 wherein an inorganic thickener is present.
Claim 16
Dependent Claim
13 words
A bandage of claim 14 wherein said thickener is highly dispersed silicon dioxide.
Claim 17
Dependent Claim
15 words
A bandage of claim 15 having 2 to 4% by weight of said silicon dioxide.
Claim 18
Dependent Claim
22 words
A bandage of claim 1 wherein said substrate is taken from the class consisting of gauze, elastic woven fabric, and non-woven fabric.
Claim 19
Dependent Claim
18 words
A bandage of claim 1 wherein said composition is applied in an amount of 120-200 g/m 2 .
Claim 20
Dependent Claim
17 words
A bandage of claim 4 wherein said radiation is in an amount of 0.5 to 5 megarad.
Claim 21
Dependent Claim
15 words
A bandage of claim 3 wherein said radiation is administered when said bandage is packaged.
Claim 22
Dependent Claim
107 words
A bandage of claim 2 wherein said composition contains 2 to 4% by weight highly dispersed SiO 2 , has a viscosity of 1 to 100 Pas; said ether having a viscosity, in 2% water solution at room temperature, of 50 to 12,000 mPas., and taken from the class consisting of methylhydroxy ethyl cellulose, ethylhydroxy ethyl cellulose, hydroxypropylmethyl cellulose, methylhydroxypropyl cellulose and mixtures thereof, said substrate comprising gauze, elastic woven fabric, or non-woven fabric, said substrate being coated on at least one side with 120 to 200 g/m 2 of said composition, said bandage having been irradiated with 0.5 to 5.0 megarad of gamma rays after packaging.
Claim 23
Dependent Claim
109 words
A method according to claim 6 wherein said composition contains 2 to 4% by weight highly dispersed SiO 2 , has a viscosity of 1 to 100 Pas.; said ether having a viscosity, in 2% water solution at room temperature, of 50 to 12,000 mPas., and taken from the class consisting of methylhydroxy ethyl cellulose, ethylhydroxy ethyl cellulose, hydroxypropylmethyl cellulose, methylhydroxypropyl cellulose, and mixtures thereof, coating 120 to 200 g/m 2 of said composition on a substrate taken from the class consisting of gauze, elastic woven fabric, or non-woven fabric, packaging said bandage and then irradiating said bandage in said package with 0.5 to 5.0 megarad of gamma rays.
Claim 24
Dependent Claim
12 words
A bandage of claim 2 which has been subjected to energy-rich radiation.
Claim 25
Dependent Claim
11 words
A bandage of claim 23 wherein said radiation is gamma radiation.
Claim 26
Dependent Claim
14 words
A method according to claim 6 wherein said composition is subjected to energy-rich radiation.
Claim 27
Dependent Claim
12 words
A method according to claim 25 wherein said radiation is gamma radiation.
Claim 28
Dependent Claim
17 words
A bandage of claim 24 wherein said radiation is in an amount of 0.5 to 5 megarad.
Claim 29
Dependent Claim
15 words
A bandage of claim 23 wherein said radiation is administered when said bandage is packaged.
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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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |