US4859241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal flake and use thereof
Assignee: ADVANCED APPLIED ADHESIVES Inc
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Filing: 1986-04-16
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Granted: 1989-08-22
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Expires: 2006-04-16
Abstract
Abstract Silver flake having an organo-silver surfactant thereon. Preferably the surfactant is silver stearate. The flake is made by milling silver powder and the surfactant in a liquid medium in which the surfactant is insoluble. The flake makes possible silver-filled paste of improved properties.
Inventors
- 👤 James Grundy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:01
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C03; C03C; C03C8/00; C03C8/14; C03C8/18; C04B41/45; C04B41/50; C04B41/51; C04B41/5116; C04B41/5183; C04B41/80; C04B41/81; C04B41/85; C04B41/88; H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H10; H10W; H10W20/00; H10W20/40; C04B2111/00; C04B2111/00474; C04B2111/00844; Y; Y10; Y10S; Y10S75/00; Y10S75/954; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
Silver flake having an organo-silver surfactant thereon, said surfacxtant being insoluble in 2,2,4-trimethyl-1,3-pentane diol-monoisobutyrate.
Claim 2
Dependent Claim
14 words
Silver flake having an organo-silver surfactant thereon, said surfacxtant being insoluble in 2,2,4-trimethyl-1,3-pentane diol-monoisobutyrate.
Claim 3
Dependent Claim
11 words
The flake of claim 1, wherein the surfactant is silver stearate.
Claim 4
Dependent Claim
27 words
A process for preparing the flake of claim 1, which comprises milling silver powder and the surfactant in a liquid medium in which the surfactant is insoluble.
Claim 5
Dependent Claim
12 words
The process of claim 3, wherein the liquid medium is 2,2,4-trimethy1-1,3-pentane diol-monoisobutyrate.
Claim 6
Dependent Claim
26 words
In a silver-filled paste comprising glass frit, silver flake and a liquid vehicle, the improvement which includes, as the silver flake, the flake of claim 1.
Claim 7
Dependent Claim
11 words
The paste of claim 5, wherein the surfactant is silver stearate.
Claim 8
Dependent Claim
12 words
The paste of claim 6, wherein the liquid vehicle comprises 2,2,4-trimethy1-1,3-pentane diol-monoisobutyrate.
References Cited (Backward Citations)
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Cited
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US4463030A
Cited
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Cited
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Cited
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Cited
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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) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |