US3457199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved urea-formaldehyde foams
Assignee: Honeywell International Inc
•
Filing: 1965-12-08
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Granted: 1969-07-22
•
Expires: 1985-12-08
Abstract
No abstract record available.
Inventors
- 👤 Rodney L Wells
- 👤 Alexander Sadle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:50
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08J9/0066; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K7/00; C08K7/22; C08K7/24; C08J2361/00; C08J2361/20; C08J2361/22; C08J2361/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3138563A
Cited
US3290260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |