US2158987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay product and process of preparing same
Assignee: Georgia Kaolin Co
•
Filing: 1934-11-26
•
Granted: 1939-05-16
•
Expires: 1954-11-26
Abstract
No abstract record available.
Inventors
- 👤 William T Maloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:47
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/025; D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-05-15 | 1942-11-14 | 1943-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-15 | 1946-11-14 | 1947-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-15 | 1950-11-14 | 1951-05-16 | $7700.00 | Window Closed / Lapsed |