Patent US812228A successfully refreshed from Google Patents.
Patent US2860061A successfully refreshed from Google Patents.
US2860061A
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Composition and process for manufacturing cement
Assignee: FLSmidth and Co AS
•
Filing: 1955-12-07
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Granted: 1958-11-11
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Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Heilmann Thorbjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/38; C04B7/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A COMPOSITION FOR USE IN THE FORMATION OF STRONG NODULES OF A MATERIAL CONVERTIBLE BY BURNING INTO A HYDRAULIC CEMENT OF THE CLASS TYPIFIED BY PORTLAND CEMENT, WHICH COMPRISES A HYDRAULIC CEMENT RAW MATERIAL MIX, TO WHICH HAS BEEN ADDED FROM 1/2% TO 4% BY WEIGHT, OF THE MIX OF A MINERAL SUBSTANCE CONTAINING A SUBSTANTIAL PROPORTION OF MONTMORILLONITE AND HAVING THE PROPERTY OF SWELLING WHEN MOISTENED AND SHRINKING ON SUBSEQUENT DRYING.
Claim 2
Dependent Claim
72 words
A COMPOSITION FOR USE IN THE FORMATION OF STRONG NODULES OF A MATERIAL CONVERTIBLE BY BURNING INTO A HYDRAULIC CEMENT OF THE CLASS TYPIFIED BY PORTLAND CEMENT, WHICH COMPRISES A HYDRAULIC CEMENT RAW MATERIAL MIX, TO WHICH HAS BEEN ADDED FROM 1/2% TO 4% BY WEIGHT, OF THE MIX OF A MINERAL SUBSTANCE CONTAINING A SUBSTANTIAL PROPORTION OF MONTMORILLONITE AND HAVING THE PROPERTY OF SWELLING WHEN MOISTENED AND SHRINKING ON SUBSEQUENT DRYING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |