US1630660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making an adsorbent and the product thereof
Assignee: ZAIDAN HOJIN RIKAGAKU KENKYUJO
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Filing: 1923-12-27
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Granted: 1927-05-31
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Expires: 1943-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ikeda Kikunae
- 👤 Isobe Hajime
- 👤 Okazawa Tsuruji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:45
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; Y; Y10; Y10S; Y10S264/00; Y10S264/39; Y10S425/00; Y10S425/101
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) | 1930-05-30 | 1930-11-29 | 1931-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-30 | 1934-11-29 | 1935-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-30 | 1938-11-29 | 1939-05-31 | $7700.00 | Window Closed / Lapsed |