US3089284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic refractory brick and method
Assignee: General Refractories Co
•
Filing: 1959-02-19
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Granted: 1963-05-14
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Expires: 1979-02-19
Abstract
No abstract record available.
Inventors
- 👤 Heuer Russell Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:51
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/0018; F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; F27D1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A BASIC REFRACTORY BRICK COMPRISING AN INTERGRAL BODY OF BASIC REFRACTORY HAVING A PLURALITY OF LATERAL LONGITUDINAL FACES EACH IN A CORRESPONDING PLANE OF SAID BODY, AN OXIDIZABLE METALLIC PLATE HAVING A BASE ON ONE OF SAID
Claim 2
Dependent Claim
37 words
A BASIC REFRACTORY BRICK COMPRISING AN INTERGRAL BODY OF BASIC REFRACTORY HAVING A PLURALITY OF LATERAL LONGITUDINAL FACES EACH IN A CORRESPONDING PLANE OF SAID BODY, AN OXIDIZABLE METALLIC PLATE HAVING A BASE ON ONE OF SAID
References Cited (Backward Citations)
US2736187A
Cited
US1845711A
Cited
US2247376A
Cited
US2289911A
Cited
US2304170A
Cited
US2846963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |