Patent US3506408A successfully refreshed from Google Patents.
US3506408A
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Continuous reaction apparatus containing a solid granular catalyst
Assignee: Daicel Corp
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Filing: 1967-02-13
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Granted: 1970-04-14
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Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 Osamu Kageyama
- 👤 Akira Kawano
- 👤 Hiroshi Yokoo
- 👤 Yasushi Ohmori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:29
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0476; B01J8/048; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30223; Y; Y10; Y10S; Y10S203/00; Y10S203/06; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2934326A
Cited
US3048468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |