Patent US134619A successfully refreshed from Google Patents.
US2406910A
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Treatment of refractory materials
Assignee: Basic Refractories Inc
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Filing: 1943-01-06
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Granted: 1946-09-03
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Expires: 1963-01-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A Schoenlaub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:57
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1055; C04B20/1066; C04B35/00; C04B35/01; C04B35/622; C04B35/626; C04B35/628; C04B35/66; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206; C04B2235/34; C04B2235/3427; C04B2235/3436; C04B2235/3445
Claims Analysis
Total Claims: 0
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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) | 1949-09-02 | 1950-03-04 | 1950-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-09-02 | 1954-03-04 | 1954-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-09-02 | 1958-03-04 | 1958-09-03 | $7700.00 | Window Closed / Lapsed |