US4992216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing ozone-containing water
Assignee: Ise Chemicals Corp
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Filing: 1989-12-20
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Granted: 1991-02-12
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Expires: 2009-12-20
Abstract
Abstract Flowing an ozone-containing gas through one passage which is either the space between an outer tube and an inner tube disposed in the outer tube or the space in the inner tube, and flowing an aqueous liquid through the passage, which the ozone-containing gas is not flowing through, provides aqueous ozone solutions of high concentration and purity provided that the inner tube possesses a number of pores with an average diameter of 2 to 4 microns.
Inventors
- 👤 Kozo Saita
- 👤 Hisayuki Kawano
- 👤 Takeshi Utsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/237; B01F23/2376; B01F23/23761; B01F23/237613; B01F23/231; B01F23/23105; B01F23/2312; B01F23/23123; B01F23/232; B01F25/00; B01F25/30; B01F25/31; B01F25/314; B01F25/3142; B01F25/31421; B01F23/23126; B01F23/231265; B01F23/2373; Y; Y10; Y10S; Y10S261/00; Y10S261/42; Y10S261/75
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
72 words
A method for producing ozone-containing water, which comprises the steps: (i) flowing an ozone-containing gas through a first passage which is the space between an outer tube and an inner tube disposed in said outer tube; and (ii) flowing an aqueous liquid through a second passage which is the space in said inner tube, wherein said inner tube possesses a plurality of pores with an average diameter of 2 to 4 microns.
Claim 2
Independent Claim
72 words
A method for producing ozone-containing water, which comprises the steps: (i) flowing an ozone-containing gas through a first passage which is the space between an outer tube and an inner tube disposed in said outer tube; and (ii) flowing an aqueous liquid through a second passage which is the space in said inner tube, wherein said inner tube possesses a plurality of pores with an average diameter of 2 to 4 microns.
Claim 3
Dependent Claim
17 words
The method of claim 1, wherein said inner tube has a porosity in the range of 50-60%.
Claim 4
Dependent Claim
25 words
The method of claim 1, wherein the deviation of the diameter of said pores is less than 10% of the average diameter of said pores.
Claim 5
Dependent Claim
22 words
The method of claim 1, wherein said ozone-containing gas has a pressure in the range of 0.5 to 1.5 Kg/cm 2 ·G.
Claim 6
Dependent Claim
23 words
The method of claim 1, wherein said aqueous liquid flows through said second passage with a flow speed of 2 to 10 m/sec.
Claim 7
Dependent Claim
12 words
The method of claim 1, wherein said inner tube is porous glass.
Claim 8
Independent Claim
72 words
A method for producing ozone-containing water, which comprises the steps: (i) flowing an aqueous liquid through a first passage which is the space between an outer tube and an inner tube disposed in said outer tube; and (ii) flowing an ozone-containing gas through a second passage which is the space in said inner tube, wherein said inner tube possesses a plurality of pores with an average diameter of 2 to 4 microns.
Claim 9
Independent Claim
72 words
A method for producing ozone-containing water, which comprises the steps: (i) flowing an aqueous liquid through a first passage which is the space between an outer tube and an inner tube disposed in said outer tube; and (ii) flowing an ozone-containing gas through a second passage which is the space in said inner tube, wherein said inner tube possesses a plurality of pores with an average diameter of 2 to 4 microns.
Claim 10
Dependent Claim
17 words
The method of claim 7, wherein said inner tube has a porosity in the range of 50-60%.
Claim 11
Dependent Claim
25 words
The method of claim 7, wherein the deviation of the diameter of said pores is less than 10% of the average diameter of said pores.
Claim 12
Dependent Claim
21 words
The method of claim 7, wherein said ozone-containing gas has a pressure-in the range of 0.5 to 1.5 Kg/cm 2 ·G.
Claim 13
Dependent Claim
23 words
The method of claim 7, wherein said aqueous liquid flows through said first passage with a flow speed of 2 to 10 m/sec.
Claim 14
Dependent Claim
12 words
The method of claim 7, wherein said inner tube is porous glass.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |