Patent US4327042A successfully refreshed from Google Patents.
US4327042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft device for a bubble column
Assignee: KH Neochem Co Ltd
•
Filing: 1980-12-22
•
Granted: 1982-04-27
•
Expires: 2000-12-22
Abstract
Abstract Disclosed is an improved draft device for a bubble column used in a reaction wherein gas and liquid are mixed such as fermentation. The draft device consists of a plurality of vertical plates coaxially arranged within the bubble column such that each plate has one vertical edge in outwardly spaced overlapping relation to a vertical edge of an adjacent plate and has the other vertical edge in inwardly spaced overlapping relation to a vertical edge of the other adjacent plate.
Inventors
- 👤 Hiroshi Hagino
- 👤 Hideo Odagiri
- 👤 Junichi Okutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/22; C02F3/223; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2323; B01F23/23231; B01F23/232311; B01F35/00; B01F35/30; B01F35/32; B01F35/32005; B01F35/3203; B01J; B01J10/00; B01J10/002; B01J19/00; B01J19/0053; B01J19/006; B01J19/24; B01J19/2455; B01J19/246; C12; C12M; C12M27/00; C12M27/18; C12M27/20; C12M29/00; C12M29/06; C12M29/08; B01F35/32015; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S435/00; Y10S435/818
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
In a bubble column for reactions wherein gas and liquid are mixed comprising a cylindrical vertically disposed column and means for introducing a gas to the bottom of said column, an improved draft device which comprises a plurality of plates coaxially disposed within said column; each of said plates having one vertical edge in outwardly spaced, overlapping relation to a vertical edge of adjacent plate, and the other vertical edge in inwardly spaced, overlapping relation to a vertical edge of the other adjacent plate.
Claim 2
Dependent Claim
84 words
In a bubble column for reactions wherein gas and liquid are mixed comprising a cylindrical vertically disposed column and means for introducing a gas to the bottom of said column, an improved draft device which comprises a plurality of plates coaxially disposed within said column; each of said plates having one vertical edge in outwardly spaced, overlapping relation to a vertical edge of adjacent plate, and the other vertical edge in inwardly spaced, overlapping relation to a vertical edge of the other adjacent plate.
Claim 3
Dependent Claim
37 words
An improved draft device according to claim 1 wherein said plates are disposed whereby said overlap provides a total surface area of the plates of 1 to 4 times the apparent surface area of the draft device.
Claim 4
Dependent Claim
16 words
An improved draft device according to claim 1 wherein said plates are arcuate in transverse cross-section.
Claim 5
Dependent Claim
17 words
An improved draft device according to claim 1 wherein said plates are vertically disposed within said column.
Claim 6
Dependent Claim
16 words
An improved draft device according to claim 4 wherein said plates are arcuate in transverse cross-section.
Claim 7
Dependent Claim
32 words
An improved draft device according to claim 5 wherein the centers of the arcs of said plates define a circle which is 0.65 to 0.75 that of the diameter of said column.
Claim 8
Dependent Claim
19 words
An improved draft device according to claim 1 wherein said plates are disposed within said column as a frustrum.
References Cited (Backward Citations)
US1937434A
Cited
DE1196165B
Cited
FR1238663A
Cited
DE1172674B
Cited
US3236744A
Cited
US3400051A
Cited
GB1123546A
Cited
FR2073933A5
Cited
SU396361A1
Cited
US3852384A
Cited
US3969446A
Cited
FR2281980B1
Cited
DE2753388C3
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-26 | 1985-10-26 | 1986-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-26 | 1989-10-26 | 1990-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-26 | 1993-10-26 | 1994-04-27 | $7700.00 | Window Closed / Lapsed |