US2726964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified quartz and method of making
Assignee: Individual
•
Filing: 1952-11-05
•
Granted: 1955-12-13
•
Expires: 1972-11-05
Abstract
No abstract record available.
Inventors
- 👤 Edward J Smoke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:27
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/24; C04B33/26; C04B35/00; C04B35/01; C04B35/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
THE NEW COMPONENT PRODUCT FOR SUBSTITUTION IN PLACE OF SIMPLE SILICA IN OTHERWISE CONVENTIONAL PORCELAIN COMPOSITIONS, TO SUBSTANTIALLY ELIMINATE THE ABRUPT CHANGES IN CURVE OF LINEAR THERMAL EXPANSION OF THE FINAL PORECLAIN BODY DUE TO CONVENTIONAL QUARTZ CHARACTERISTTICS, SAID NEW COMPONENT PRODUCT COMPRISING OFBY WEIGHT-FROM 91 PER CENT TO 97 PERCENT SILICA, THE REMAINDER OF SAID NEW COMPONENT CONSISTING OF ALUMINA AND LITHIA IN THE RATIO OF, BY WEIGHT FROM TWO TO ONE TO THREE TO ONE.
References Cited (Backward Citations)
DE376398C
Cited
US2351204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |