US3074707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of cement
Assignee: Union Carbide Corp
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Filing: 1960-04-15
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Granted: 1963-01-22
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Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 James J Humphries
- 👤 Abram L Hodge
- 👤 Roger S Babcock
- 👤 Bruce C Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B7/44; F; F27; F27B; F27B7/00; F27B7/20; F27B7/34; Y; Y02; Y02P; Y02P40/00; Y02P40/10; Y02P40/121
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
METHOD FOR THE MANUFACTURE OF PORTLAND CEMENT IN A ROTARY KILN HAVING AN INLET END AND A DISCHARGE END WHICH COMPRISES CHARGING CEMENT-FORMING MATERIAL INTO THE INLET END OF THE KILN, ESTABLISHING A FRAME AT THE DISCHARGE END OF THE KILN FROM A BURNER DISPOSED ABOVE THE
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |