US2710244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of kaolin
Assignee: JM Huber Corp
•
Filing: 1951-02-17
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Granted: 1955-06-07
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Expires: 1971-02-17
Abstract
No abstract record available.
Inventors
- 👤 Bertorelli Orlando Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/131
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE PROCESS FOR IMPROVING THE PROPERTIES OF RAW KAOLIN WHICH CONSISTS ESSENTIALLY OF DRYING THE RAW KAOLIN, GRINDING IT TO A FINELY DIVIDED FORM AND THEN MIXING AND REACTING THE DRY, FINELY-DIVIDED KAOLIN WITH FROM ABOUT 0.05% TO ABOUT 0.1% BY WEIGHT OF AMMONIA IN THE FORM OF A MEMBER OF THE GROUP CONSISTING OF AMMONIA GAS AND ORDINARY COMMERCIAL AQUEOUS AMMONIUM HYDROXIDE.
Claim 2
Dependent Claim
63 words
THE PROCESS FOR IMPROVING THE PROPERTIES OF RAW KAOLIN WHICH CONSISTS ESSENTIALLY OF DRYING THE RAW KAOLIN, GRINDING IT TO A FINELY DIVIDED FORM AND THEN MIXING AND REACTING THE DRY, FINELY-DIVIDED KAOLIN WITH FROM ABOUT 0.05% TO ABOUT 0.1% BY WEIGHT OF AMMONIA IN THE FORM OF A MEMBER OF THE GROUP CONSISTING OF AMMONIA GAS AND ORDINARY COMMERCIAL AQUEOUS AMMONIUM HYDROXIDE.
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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) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |