US3381064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making pseudowollastonite clinker with the rotary kiln
Assignee: Taiheiyo Cement Corp
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Filing: 1966-11-30
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Granted: 1968-04-30
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Expires: 1986-11-30
Abstract
No abstract record available.
Inventors
- 👤 Yamaguchi Taro
- 👤 Shido Fumiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:12
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD FOR THE PREPARATION OF PSEUDOWOLLASTONITE CLINKER WHICH COMPRISES PREPARING A RAW MIXTURE POWDER CONSISTING OF A LIMY RAW MATERIAL COMPOSED AT LEAST OF ONE MATTER SELECTED FROM LIMESTONE, QUICK LIME, SLAKED LIME AND WOLLASTONITE AND OF A SILICIC RAW MATERIAL COMPOSED AT LEAST OF ONE MATTER SELECTED FROM QUARTZ, CRISTOBALITE, TRIDYMITE AND AMORPHOUS SILICA, TOGETHER WITH AT LEAST ONE MATTER SELECTED FROM THOSE CONTAINING AT LEAST ONE ELEMENT OF LI, NA, K, BA, ZN, TI, AL, FE, B AND P AS A FLUX, SO THAT THE MOLECULAR RATIO OF CAO/SIO2 THE PRODUCED CLINKER IS IN THE RANGE OF 0.5-1..0, FORMING IT INTO COMPACE GRAINS AND SINTERING THE COMPACT GRAINS BY USING THE ROTARY KILN AT A TEMPERATURE IN THE RANGE OF 1250*-1470*C.
Claim 2
Independent Claim
124 words
A METHOD FOR THE PREPARATION OF PSEUDOWOLLASTONITE CLINKER WHICH COMPRISES PREPARING A RAW MIXTURE POWDER CONSISTING OF A LIMY RAW MATERIAL COMPOSED AT LEAST OF ONE MATTER SELECTED FROM LIMESTONE, QUICK LIME, SLAKED LIME AND WOLLASTONITE AND OF A SILICIC RAW MATERIAL COMPOSED AT LEAST OF ONE MATTER SELECTED FROM QUARTZ, CRISTOBALITE, TRIDYMITE AND AMORPHOUS SILICA, TOGETHER WITH AT LEAST ONE MATTER SELECTED FROM THOSE CONTAINING AT LEAST ONE ELEMENT OF LI, NA, K, BA, ZN, TI, AL, FE, B AND P AS A FLUX, SO THAT THE MOLECULAR RATIO OF CAO/SIO2 THE PRODUCED CLINKER IS IN THE RANGE OF 0.5-1..0, FORMING IT INTO COMPACE GRAINS AND SINTERING THE COMPACT GRAINS BY USING THE ROTARY KILN AT A TEMPERATURE IN THE RANGE OF 1250*-1470*C.
References Cited (Backward Citations)
US1904699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |