US3022180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic material and method of making the same
Assignee: General Electric Co
•
Filing: 1959-09-23
•
Granted: 1962-02-20
•
Expires: 1979-09-23
Abstract
No abstract record available.
Inventors
- 👤 William J Morrissey
- 👤 James W Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:35
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/16; C04B35/18; C04B35/195; C03; C03C; C03C10/00; C03C10/0036; C03C10/0045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A HARD, DENSE, MECHANICALLY STRONG, ELECTRICALLY INSULATING CERAMIC MATERIAL FORMED OF A SUBSTANTIALLY HOMOGENEOUS MICRO-CRYSTALLINE MASS COMPOSED ESSENTIALLY OF RANDOMLY ORIENTED SYNTHETIC MAGNESIUM SILICATE CRYSTALS, SAID MATERIAL HAVING THE FOLLOWING APPROXIMATE COMPOSITION IN PERCENT BY WEIGHT:
Claim 2
Dependent Claim
36 words
A HARD, DENSE, MECHANICALLY STRONG, ELECTRICALLY INSULATING CERAMIC MATERIAL FORMED OF A SUBSTANTIALLY HOMOGENEOUS MICRO-CRYSTALLINE MASS COMPOSED ESSENTIALLY OF RANDOMLY ORIENTED SYNTHETIC MAGNESIUM SILICATE CRYSTALS, SAID MATERIAL HAVING THE FOLLOWING APPROXIMATE COMPOSITION IN PERCENT BY WEIGHT:
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |