Patent US1083797A successfully refreshed from Google Patents.
Patent US3897410A successfully refreshed from Google Patents.
US2948632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface modified kaolin clay
Assignee: Minerals & Chemicals Corp Of A
•
Filing: 1958-04-24
•
Granted: 1960-08-09
•
Expires: 1978-04-24
Abstract
No abstract record available.
Inventors
- 👤 Albert Charles Gerald
- 👤 James R Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:58
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
KAOLIN CLAY OF IMPROVED DISPERSIBILITY IN LIQUID ORGANIC MEDIA CONTAINING FROM 0.5 TO 5.0%, BASED ON THE WEIGHT OF THE CLAY, OF ROSIN AMINE STEARATE COATED ON THE SURFACE THEREOF.
Claim 2
Dependent Claim
30 words
KAOLIN CLAY OF IMPROVED DISPERSIBILITY IN LIQUID ORGANIC MEDIA CONTAINING FROM 0.5 TO 5.0%, BASED ON THE WEIGHT OF THE CLAY, OF ROSIN AMINE STEARATE COATED ON THE SURFACE THEREOF.
References Cited (Backward Citations)
US2305379A
Cited
US2531427A
Cited
US2531396A
Cited
US2697699A
Cited
US2739069A
Cited
US2841504A
Cited
US2852406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |