Patent US2477555A successfully refreshed from Google Patents.
US2477555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral fiber mat and process of manufacture
Assignee: Owens Corning
•
Filing: 1944-08-18
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Granted: 1949-07-26
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Expires: 1964-08-18
Abstract
No abstract record available.
Inventors
- 👤 Richard M Roberts
- 👤 Theodore H Metzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:10
CPC Classifications
C; C04; C04B; C04B30/00; C04B30/02; Y; Y10; Y10S; Y10S425/00; Y10S425/20; Y10S425/201; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2103769A
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US2130944A
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US2206059A
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US2202030A
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US2217538A
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US2288072A
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US2252157A
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US2333218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |