US4482447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaqueous suspension for electrophoretic deposition of powders
Assignee: Sony Corp
•
Filing: 1983-09-13
•
Granted: 1984-11-13
•
Expires: 2003-09-13
Abstract
Abstract Nonaqueous suspension for electrophoretic deposition of powders is disclosed which includes suspension consisting of ketonic solvent, nitrocellulose dissolved therein and powders suspended therein, strong acid, and strong base. In this case, the strong acid and the strong base both are added to the suspension such that conductivity of the suspension becomes 1 to 30 mu /cm.
Inventors
- 👤 Jin Mizuguchi
- 👤 Koichiro Sumi
- 👤 Tsuneo Muchi
- 👤 Shinichi Soyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:27
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/225; C; C25; C25D; C25D13/00; C25D13/02; H01J9/02; H01J9/04; H01J9/042; H01J9/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
Nonaqueous suspension for electrophoretic deposition of powders comprising: suspension consisting of ketonic solvent, nitrocellulose dissolved therein and powders suspended therein; strong acid; and strong base, said strong acid and said strong base both being added to said suspension such that conductivity of said suspension becomes 1 to 30 μ /cm.
Claim 2
Dependent Claim
50 words
Nonaqueous suspension for electrophoretic deposition of powders comprising: suspension consisting of ketonic solvent, nitrocellulose dissolved therein and powders suspended therein; strong acid; and strong base, said strong acid and said strong base both being added to said suspension such that conductivity of said suspension becomes 1 to 30 μ /cm.
Claim 3
Dependent Claim
20 words
A suspension according to claim 1 wherein the pH of the suspension is in the range from 1 to 7.
Claim 4
Dependent Claim
14 words
A suspension according to claim 1 wherein said powders are cathode ray tube phosphors.
Claim 5
Dependent Claim
18 words
A suspension according to claim 1 wherein said powders have an average particle diameter of about 5 microns.
Claim 6
Dependent Claim
14 words
A suspension according to claim 1 wherein said base is a tetra-alkyl ammonium hydroxide.
Claim 7
Dependent Claim
14 words
A suspension according to claim 1 wherein said base is an alkali metal hydroxide.
Claim 8
Dependent Claim
12 words
A suspension according to claim 1 wherein said acid is sulfuric acid.
Claim 9
Dependent Claim
12 words
A suspension according to claim 1 wherein said acid is phosphoric acid.
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) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |