US3303035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay slurries and method for making same
Assignee: Minerals and Chemicals Philipp Corp
•
Filing: 1963-10-03
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Granted: 1967-02-07
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Expires: 1983-10-03
Abstract
No abstract record available.
Inventors
- 👤 Glen A Hemstock
- 👤 Robert J Bergmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:51
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/131
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A COMPOSITION ADAPTED FOR USE IN COATING PAPER AND COMPRISING FINELY DIVIDED KAOLIN CLAY, A CLAY DISPERSING AGENT AND SODIUM FLUORIDE IN AMOUNT FROM 0.02% TO 0.20% OF THE WEIGHT OF SAID CLAY, SAID COMPOSITION HAVING A PH NOT TO EXCEED 7.0.
Claim 2
Dependent Claim
42 words
A COMPOSITION ADAPTED FOR USE IN COATING PAPER AND COMPRISING FINELY DIVIDED KAOLIN CLAY, A CLAY DISPERSING AGENT AND SODIUM FLUORIDE IN AMOUNT FROM 0.02% TO 0.20% OF THE WEIGHT OF SAID CLAY, SAID COMPOSITION HAVING A PH NOT TO EXCEED 7.0.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |