US2384387A
Expired / Lapsed
US
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Treatment of urea-formaldehyde resin foam
Assignee: Libbey Owens Ford Glass Co
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Filing: 1943-12-04
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Granted: 1945-09-04
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Expires: 1963-12-04
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/003; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; C; C08; C08J; C08J9/00; C08J9/36; B29K; B29K2105/00; B29K2105/04; C08J2361/00; C08J2361/20; C08J2361/22; C08J2361/24; Y; Y10; Y10S; Y10S264/00; Y10S264/14; Y10S521/00; Y10S521/918
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) | 1948-09-03 | 1949-03-05 | 1949-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-03 | 1953-03-05 | 1953-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-03 | 1957-03-05 | 1957-09-04 | $7700.00 | Window Closed / Lapsed |