US3767590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing nondetergent aqueous wetting solutions
Assignee: AT&T Inc
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Filing: 1971-06-21
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Granted: 1973-10-23
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Expires: 1991-06-21
Abstract
Abstract AQUEOUS WETTING SOLUTIONS COMPRISE STABLE COLLOIDS, THE SOLID PHASE OF WHICH IS A HYDROUS OXIDE OF ONE OR MORE SELECTED ELEMENTS. THE SOLID, PARTICULATE PHASE OF THE COLLOID IS PRODUCED BY A CONTROLLED HYDROLYSIS AND NUCLEATION REACTION WHICH CONTINUES UNTIL SOLID PHASE PARTICLES HAVING APPROPRIATE SIZE AND SURFACE CHEMISTRY RESULT. APPLICATION OF THE WETTING SOLUTIONS TO ANY KNOWN NONWETTABLE SURFACE RENDERS SUCH SURFACE WETTABLE, VIA DEPOSITION OF THE PARTICLES OF THE SOLID PHASE ONTO THE SURFACES BY SHORT ORDER FORCES. THE RENDERING OF THE SURFACES WETTABLE IS ACCOMPLISHED WITHOUT EFFECTING A PHYSICAL OR CHEMICAL CHANGE OF THE SURFACE.
Inventors
- 👤 J Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:36
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/10; B01; B01J; B01J13/00; B01J13/0004; B01J13/0008; B01J13/0013; C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/285; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |