US4454058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical solution for increasing the surface conductivity and/or the volume conductivity of a substrate
Assignee: SAVIT ENTERPRISES Inc A CORP OF ILL
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Filing: 1983-02-04
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Granted: 1984-06-12
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Expires: 2003-02-04
Abstract
Abstract A chemical solution to be applied to a substrate either as a surface coating or as an impregnating solution which, in both cases, increases the conductivity and in the case of impregnation also increases the dimensional stability of the substrate. The solution consists of nitrocellulose and a quaternary ammonium compound both dissolved in ethylene glycol monomethyl ether or, alternatively, methyl alcohol. The porous substrates such as paper, vellum and permeable materials like cellophane may be impregnated with the solution. Both the porous and permeable substrates and non-porous substrates, such as polyester films, may utilize the benefits of this solution as a face, back or intermediate conductive surface coating. The chemical solution can also be kneaded in film compounds before casting to reduce film resistivity.
Inventors
- 👤 Joseph Savit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
37 words
A chemical solution for increasing the conductivity of a substrate consisting of: nitrocellulose and a quarternary ammonium compound dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether, methyl alcohol and mixtures thereof.
Claim 2
Dependent Claim
37 words
A chemical solution for increasing the conductivity of a substrate consisting of: nitrocellulose and a quarternary ammonium compound dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether, methyl alcohol and mixtures thereof.
Claim 3
Dependent Claim
11 words
The chemical solution of claim 1 further consisting of: isopropyl alcohol.
Claim 4
Dependent Claim
10 words
The chemical solution of claim 1 further consisting of water.
Claim 5
Dependent Claim
23 words
The chemical solution of claim 1 wherein the proportion of the nitrocellulose and the proportion of the quarternary ammonium compound are approximately equal.
Claim 6
Dependent Claim
29 words
The chemical solution of claim 1 wherein: nitrocellulose is approximately 8 percent of the total solution, and the quarternary ammonium compound is approximately 8 percent of the total solution.
Claim 7
Dependent Claim
50 words
A chemical solution for increasing the conductivity of a substrate consisting of: from 4.9 to 39.5 percent nitrocellulose relative to and from 0.5 to 15.6 percent of a quarternary ammonium compound dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether, methyl alcohol and mixtures thereof.
Claim 8
Dependent Claim
50 words
A chemical solution for increasing the conductivity of a substrate consisting of: from 4.9 to 39.5 percent nitrocellulose relative to and from 0.5 to 15.6 percent of a quarternary ammonium compound dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether, methyl alcohol and mixtures thereof.
Claim 9
Dependent Claim
11 words
The chemical solution of claim 6 further consisting of: isopropyl alcohol.
Claim 10
Dependent Claim
10 words
The chemical solution of claim 6 further consisting of: water.
Claim 11
Dependent Claim
18 words
The chemical solution of claim 6 wherein the solvent is from 40 to 80 percent of the solution.
Claim 12
Dependent Claim
65 words
A chemical solution to be used as a coating on a substrate to increase the surface conductivity of the substrate consisting of: from 4.9 to 39.5 percent of the total solution nitrocellulose, and from 0.5 to 15.6 percent of the total solution of a quarternary ammonium compound both dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether and methyl alcohol.
Claim 13
Dependent Claim
65 words
A chemical solution to be used as a coating on a substrate to increase the surface conductivity of the substrate consisting of: from 4.9 to 39.5 percent of the total solution nitrocellulose, and from 0.5 to 15.6 percent of the total solution of a quarternary ammonium compound both dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether and methyl alcohol.
Claim 14
Dependent Claim
29 words
The chemical solution of claim 10 wherein: nitrocellulose comprises approximately 8 percent of the total solution; and the quarternary ammonium compound comprises approximately 8 percent of the total solution.
Claim 15
Dependent Claim
19 words
The chemical solution of claim 11 further consisting of: approximately 3 percent isopropyl alcohol and approximately 11 percent water.
Claim 16
Dependent Claim
64 words
A chemical solution for impregnating a substrate to increase the through-conductivity and the dimensional stability of the substrate consisting of: from 4.9 to 39.5 percent of the total solution nitrocellulose, and from 0.5 to 15.6 percent of the total solution of quarternary ammonium compound both dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether, methyl alcohol and mixtures thereof.
Claim 17
Dependent Claim
64 words
A chemical solution for impregnating a substrate to increase the through-conductivity and the dimensional stability of the substrate consisting of: from 4.9 to 39.5 percent of the total solution nitrocellulose, and from 0.5 to 15.6 percent of the total solution of quarternary ammonium compound both dissolved in a solvent selected from the group consisting of ethylene glycol monomethyl ether, methyl alcohol and mixtures thereof.
Claim 18
Dependent Claim
29 words
The chemical solution of claim 13 wherein: nitrocellulose comprises approximately 8 percent of the total solution, and the quarternary ammonium compound comprises approximately 8 percent of the total solution.
Claim 19
Dependent Claim
19 words
The chemical solution of claim 14 further consisting of: approximately 3 percent isopropyl alcohol and approximately 11 percent water.
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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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |