Patent US2829147A successfully refreshed from Google Patents.
Patent US3565645A successfully refreshed from Google Patents.
US3565645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Densified zirconia-glass product
Assignee: General Electric Co
•
Filing: 1967-10-30
•
Granted: 1971-02-23
•
Expires: 1987-10-30
Abstract
Abstract IMPROVEMENT IN THE SINTERING TEMPERATURE-TIME RELATIONSHIP FOR SOLID STABILIZED ZIRCONIA AND MAXIMIZING OF THE RESISTANCE THEREOF TO GAS PENETRATION IS PROVIDED BY THE INTRODUCTION OF A SMAL AMOUNT OF A GLASS INTO THE BODY OF STABILIZED ZIRCONIA PRIOR TO SINTERING THEREOF. FOR THOSE APPLICATIONS OF STABILIZED ZIRCONIA, SUCH AS A HIGH TEMPERATURE ELECTROLYTE, WHEREIN IT IS IMPORTANT THAT ANY TREATMENT EMPLOYED MUST NOT ADD TO ELECTRONIC CONDUCTIVITY OR IMPAIR THE HIGH ANIONIC CONDUCTIVITY THEREOF ALUMINATE AND SILICATE GLASSES ARE DISCLOSED, WHICH ARE SUITABEL FOR SINTERING.
Inventors
- 👤 Richard C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:59
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/486; C04B35/488
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |