US3219868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articles of fused silica
Assignee: The General Electric Company PLC
•
Filing: 1962-10-02
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Granted: 1965-11-23
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Expires: 1982-10-02
Abstract
No abstract record available.
Inventors
- 👤 Mason Ronald Arthur Laurie
- 👤 Nelson Evan Herbert
- 👤 Rigden Sydney Alfred Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/225; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/302; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/281; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/152; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PELLUCID ARTICLE CONSISTING ESSENTAILLY OF A BODY OF FUSED SILICA HEREIN AT LEAST PART OF THE SILICA SURFACE IS COATED WITH A CONTINUOUS, ADHERENT, SUBSTANTIALLY TRANSPARENT FILM OF BORON NITRIDE.
Claim 2
Dependent Claim
31 words
A PELLUCID ARTICLE CONSISTING ESSENTAILLY OF A BODY OF FUSED SILICA HEREIN AT LEAST PART OF THE SILICA SURFACE IS COATED WITH A CONTINUOUS, ADHERENT, SUBSTANTIALLY TRANSPARENT FILM OF BORON NITRIDE.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |