US3243318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous countercurrent apparatus for contacting solid with liquid and associated methods
Assignee: Asahi Kasei Corp
•
Filing: 1963-08-22
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Granted: 1966-03-29
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Mihara Kazuhiko
- 👤 Yamashiki Takashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:59
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/24; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/0242; B01D11/0288; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
METHOD OF EFFECTING CONTACT BETWEEN GRANULAR MATERIAL AND A LIQUID, SAID METHOD COMPRISING DOWNWARDLY PASSING BY THE ACTION OF GRAVITY GRANULAR MATERIAL ALONG A PAIR OF PERFORATED PLATES WHICH ARE SPACED APART AND INCLINED WITH RESPECT TO THE HORIZONTAL TO DEFINE A V-SHAPE NARROWING DOWNWARDLY, UPWARDLY PASSING LIQUID THROUGH THE PERFORATIONS OF THE PLATES TO CONTACT AND MIX WITH THE DOWNFLOWING GRANULAR MATERIAL, DISCHARGING THE GRANULAR MATERIAL FROM THE INCLINED PLATES AFTER CONTRACT OF THE MATERIAL WITH THE LIQUID THROUGH A CONTINUOUS VERICAL PASSAGEWAY BETWEEN THE PLATES WHICH HAS THE SAME HORIZONTAL LENGTH AS THE PLATES BYCONTINUED UPWARD TRAVEL WHEREBY THE LIQUID PASSES SUBSTANTIALLY ONLY THROUGH THE PERFORATIONS AND COUNTERCURRENT CONTACT IS EFFECTED SUBSTANTIALLY ONLY ON THE PLATES.
Claim 2
Dependent Claim
118 words
METHOD OF EFFECTING CONTACT BETWEEN GRANULAR MATERIAL AND A LIQUID, SAID METHOD COMPRISING DOWNWARDLY PASSING BY THE ACTION OF GRAVITY GRANULAR MATERIAL ALONG A PAIR OF PERFORATED PLATES WHICH ARE SPACED APART AND INCLINED WITH RESPECT TO THE HORIZONTAL TO DEFINE A V-SHAPE NARROWING DOWNWARDLY, UPWARDLY PASSING LIQUID THROUGH THE PERFORATIONS OF THE PLATES TO CONTACT AND MIX WITH THE DOWNFLOWING GRANULAR MATERIAL, DISCHARGING THE GRANULAR MATERIAL FROM THE INCLINED PLATES AFTER CONTRACT OF THE MATERIAL WITH THE LIQUID THROUGH A CONTINUOUS VERICAL PASSAGEWAY BETWEEN THE PLATES WHICH HAS THE SAME HORIZONTAL LENGTH AS THE PLATES BYCONTINUED UPWARD TRAVEL WHEREBY THE LIQUID PASSES SUBSTANTIALLY ONLY THROUGH THE PERFORATIONS AND COUNTERCURRENT CONTACT IS EFFECTED SUBSTANTIALLY ONLY ON THE PLATES.
References Cited (Backward Citations)
US2376564A
Cited
US2460151A
Cited
US2519150A
Cited
US2541801A
Cited
US2606104A
Cited
US2893849A
Cited
US3099538A
Cited
US3052990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |