Patent US5856009A successfully refreshed from Google Patents.
US5856009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for phosphor particles
Assignee: NEC Electronics Corp
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Filing: 1996-10-15
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Granted: 1999-01-05
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Expires: 2016-10-15
Abstract
Abstract The present invention provides a coating phosphor comprising phosphor particles, heat resistive coating films which coat the phosphor particles and moisture proof coating films which coat the heat resistive coating films.
Inventors
- 👤 Naoki Nishio
- 👤 Akio Kamimoto
- 👤 Yasuki Kawashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:13
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
A coating for phosphor particles, comprising a metal oxide film which coats the phosphor particles and a silicon nitride film which coats the metal oxide film.
Claim 2
Dependent Claim
26 words
A coating for phosphor particles, comprising a metal oxide film which coats the phosphor particles and a silicon nitride film which coats the metal oxide film.
Claim 3
Dependent Claim
33 words
The coating of claim 1, wherein the metal oxide is selected from the group consisting of silicon oxide, titanium oxide, tantalum oxide, zirconium oxide, yttrium oxide, barium titanate, strontium titanate, and zirconium titanate.
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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) | 2002-01-04 | 2002-07-06 | 2003-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-04 | 2006-07-06 | 2007-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-04 | 2010-07-06 | 2011-01-05 | $7700.00 | Window Closed / Lapsed |