US2728949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making mineral wool
Assignee: Aquex Dev and Sales Corp
•
Filing: 1949-10-21
•
Granted: 1956-01-03
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Sweet Everett Weldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:18
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2007987A
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US2019021A
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US2315735A
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US2328714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |