US3013901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article coated with fibrous boehmite
Assignee: EIDP Inc
•
Filing: 1959-11-30
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Granted: 1961-12-19
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Bugosh John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
B; B32; B32B; B32B27/00; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10S; Y10S264/00; Y10S264/17; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/31504; Y10T428/31786; Y10T428/31855; Y10T428/31935; Y10T442/00; Y10T442/20; Y10T442/2631
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A POLYURETHANE FOAM THE PORE WALLS OF WHICH ARE COATED WITH AND BONDED TO AN UNDERCOAT COMPRISING ESSENTIALLY FIBROUS BOEHMITE AND WITH A TOPCOAT COMPRISING A HYDROPHILIC ORGANIC POLYMER CONTAINING FUNCTIONAL GROUPS SELECTED FROM THE CLASS CONSISTING OF HYDROXYL, CARBOXYL AND RADICALS HYDROLYZABLE TO HYDROXYL AND CARBOXYL GROUPS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |