US3522069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation and application of foamed magnesia cements
Assignee: Mearl Corp
•
Filing: 1967-06-01
•
Granted: 1970-07-28
•
Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 John C Checko
- 👤 Harold Umansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:04
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/30; C04B28/32; B; B28; B28C; B28C5/00; B28C5/38; B28C5/381; B28C5/386; B28C5/388; B28C5/40; B28C5/402; C04B2111/00; C04B2111/00034; C04B2111/00146; C04B2111/20; C04B2111/28; C04B2111/52; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31652; Y10T428/31656
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2598981A
Cited
US2864714A
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US3138472A
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US2915301A
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US3119704A
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US3147128A
Cited
US3458327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |