US2853285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing unicellular spherulized clay particles
Assignee: Kanium Corp
•
Filing: 1952-10-18
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Granted: 1958-09-23
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Expires: 1972-10-18
Abstract
No abstract record available.
Inventors
- 👤 John M Neff
- 👤 Jorome D Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:04
CPC Classifications
F; F27; F27B; F27B15/00; F27B15/003; C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044680A
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US2421902A
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US2489211A
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US2621034A
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US2521190A
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US2536742A
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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) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |