US4908338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dried emulsion ceramic process
Assignee: MRA Laboratories Inc
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Filing: 1988-05-20
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Granted: 1990-03-13
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Expires: 2008-05-20
Abstract
Abstract Dried emulsion of precursors for ceramic additives are added to paints containing fine particle ceramic materials for use in ceramic capacitors. The precursors are converted into the desired additives in the paints during the sintering of the capacitor bodies.
Inventors
- 👤 Sidney D. Ross
- 👤 Galeb H. Maher
- 👤 Clinton E. Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C01; C01B; C01B13/00; C01B13/14; C01B13/32; C01B13/328; C01G; C01G23/00; C01G23/003; C01G23/006; C01G25/00; C01G33/00; C01G45/00; C01G45/02; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2004/52; C01P2004/60; C01P2004/61; C01P2004/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A dried emulsion process for introducing an additive, selected from the group consisting of cadmium zinc borate, niobium pentoxide, manganese oxide, and bismuth oxide, into fine powder ceramic multi-layer capacitor materials, said process comprising: forming an aqueous solution of precursors of said additive; forming an emulsion of a surfactant, a waterimmiscible fluid, and a dispersion of droplets of said solution; distilling water and said fluid from said emulsion so as to result in a dried emulsion of said precursors; and introducing an amount greater than 0% and up to 5% by weight of said dried emulsion into fine powder ceramic materials.
Claim 2
Dependent Claim
101 words
A dried emulsion process for introducing an additive, selected from the group consisting of cadmium zinc borate, niobium pentoxide, manganese oxide, and bismuth oxide, into fine powder ceramic multi-layer capacitor materials, said process comprising: forming an aqueous solution of precursors of said additive; forming an emulsion of a surfactant, a waterimmiscible fluid, and a dispersion of droplets of said solution; distilling water and said fluid from said emulsion so as to result in a dried emulsion of said precursors; and introducing an amount greater than 0% and up to 5% by weight of said dried emulsion into fine powder ceramic materials.
Claim 3
Dependent Claim
40 words
The dried emulsion process of claim 1 wherein said ceramic materials are in paint form, and said dried emulsion is added to said paint anD is sintered with said paint so as to convert said precursors into the desired additive.
Claim 4
Dependent Claim
25 words
The dried emulsion process of claim 1 wherein said precursors are salts selected so as to provide desired reducing or oxidizing conditions for said sintering.
References Cited (Backward Citations)
US3330697A
Cited
DE2032233A1
Cited
US3647364A
Cited
US3717487A
Cited
US4081857A
Cited
US4582814A
Cited
US4640905A
Cited
US4654075A
Cited
US4749664A
Cited
US4845062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |