Patent US2631940A successfully refreshed from Google Patents.
US2631940A
Expired / Lapsed
US
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Ceramic composition
Assignee: Individual
•
Filing: 1951-10-25
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Granted: 1953-03-17
•
Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Harry C Dunegan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:35
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B33/00; C04B33/24; C04B33/26; C04B35/00; C04B35/01; C04B35/10; C04B35/111
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A SOLID CERAMIC OBJECT, SAID OBJECT BEING THE PRODUCT OF PRESSING A CERAMIC BATCH OF THE FOLLOWING COMPOSITION:
Claim 2
Dependent Claim
18 words
A SOLID CERAMIC OBJECT, SAID OBJECT BEING THE PRODUCT OF PRESSING A CERAMIC BATCH OF THE FOLLOWING COMPOSITION:
References Cited (Backward Citations)
US2423958A
Cited
US2482580A
Cited
US1966408A
Cited
US2124865A
Cited
US2327972A
Cited
US2330129A
Cited
US2502198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |