US3450650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making porous bodies
Assignee: Yuasa Corp
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Filing: 1964-05-28
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Granted: 1969-06-17
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kazuo Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:10
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/20; B29C67/202; C; C08; C08J; C08J9/00; C08J9/28; H; H01; H01M; H01M50/00; H01M50/40; H01M50/489; H01M50/491; C08J2201/00; C08J2201/04; C08J2201/05; C08J2201/0502; C08J2201/054; C08J2201/0542; C08J2201/0543; C08J2201/0545; C08J2201/0546; H01M2300/00; H01M2300/0002; H01M2300/0005; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S264/00; Y10S264/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |