US4335158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bandage carrying ion-leachable cement compositions
Assignee: Johnson and Johnson
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Filing: 1980-11-07
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Granted: 1982-06-15
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Expires: 2000-11-07
Abstract
Abstract A method for producing a substrate carrying a cementitious composition is provided. The method involves dispersing a mixture of an ion-leachable, inorganic compound and a poly(carboxylic acid) in a liquid to form a coating mixture wherein the liquid is selected to be a non-aqueous, non-leachable liquid in which the poly(carboxylic acid) is substantially soluble. The coating mixture is then applied to the substrate.
Inventors
- 👤 Charles H. Beede
- 👤 Richard N. Zirnite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:40
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/07; A61L15/12; A61L27/00; A61L27/40; A61L27/44; A61L27/446
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
A method for producing a substrate carrying a cementitious composition comprising: dispersing a mixture comprising an ion-leachable inorganic component and a poly(carboxylic acid) in a liquid to form a coating mixture, said liquid comprising a non-aqueous, non-reactive liquid in which said poly(carboxylic acid) is substantially soluble; said liquid being selected from the group consisting of methanol, dioxane, tetrahydrofuran, 2-ethoxyethanol, 2-methoxyethanol, and mixtures thereof; and applying said coating mixture to said substrate.
Claim 2
Independent Claim
71 words
A method for producing a substrate carrying a cementitious composition comprising: dispersing a mixture comprising an ion-leachable inorganic component and a poly(carboxylic acid) in a liquid to form a coating mixture, said liquid comprising a non-aqueous, non-reactive liquid in which said poly(carboxylic acid) is substantially soluble; said liquid being selected from the group consisting of methanol, dioxane, tetrahydrofuran, 2-ethoxyethanol, 2-methoxyethanol, and mixtures thereof; and applying said coating mixture to said substrate.
Claim 3
Dependent Claim
47 words
The method of claim 1 wherein said coating mixture is chosen to be one in which the poly(carboxylic acid) is soluble to at least the extent of about ten parts by weight of the poly(carboxylic acid) per 100 parts by weight of the liquid, at room temperature.
Claim 4
Dependent Claim
43 words
The method of claim 2 wherein said liquid is one in which the poly(carboxylic acid) is soluble to at least the extent of about 20 parts by weight of the poly(carboxylic acid) per 100 parts by weight of the liquid, at room temperature.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein said mixture of ion-leachable component and poly(carboxylic acid) comprise at least 45% by weight of said coating mixture.
Claim 6
Dependent Claim
10 words
The method of claim 1 wherein said substrate is gauze.
Claim 7
Dependent Claim
32 words
The method of claim 1 wherein said poly(carboxylic acid) is selected from the group consisting of the polymers and interpolymers of monocarboxylic acids, monocarboxylic acid anhydrides, dicarboxylic acids, and dicarboxylic acid anhydrides.
Claim 8
Dependent Claim
12 words
The method of claim 6 wherein said poly(carboxylic acid) is poly(acrylic acid).
Claim 9
Dependent Claim
13 words
The method of claim 1 wherein said ion-leachable component is a glass powder.
Claim 10
Dependent Claim
32 words
The method of claim 8 wherein said glass powder is formed from mixtures of silica and oxides of metals selected from the group consisting of alkali, alkaline earth, aluminum and zinc metals.
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) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |