Patent US1856684A successfully refreshed from Google Patents.
US1856684A
Expired / Lapsed
US
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Porous body and process of manufacturing the same
Assignee: Individual
•
Filing: 1927-11-17
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Granted: 1932-05-03
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Expires: 1947-11-17
Abstract
No abstract record available.
Inventors
- 👤 Ziegner Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:18
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/26; C08J9/28; C08L; C08L21/00; C08J2201/00; C08J2201/04; C08J2201/05; C08J2201/0502; C08J2201/0504; C08J2203/00; C08J2203/10; C08J2303/00; C08J2303/02; C08J2321/00; H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/443; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1935-05-03 | 1935-11-02 | 1936-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-03 | 1939-11-02 | 1940-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-03 | 1943-11-02 | 1944-05-03 | $7700.00 | Window Closed / Lapsed |