Patent US4690699A successfully refreshed from Google Patents.
US4690699A
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Apparatus for producing sterile air
Assignee: House Foods Corp
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Filing: 1985-06-19
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Granted: 1987-09-01
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Expires: 2005-06-19
Abstract
Abstract An apparatus for producing sterile air comprises a sterilizing filter for filtering microbes in air and an air heater for heating the filtered air for its sterilization. There is provided means for disposing of the sterile air from the air heater at an initial stage of production of the sterile air.
Inventors
- 👤 Ko Sugisawa
- 👤 Kazuya Sekiguchi
- 👤 Masao Taguchi
- 👤 Masayuki Nakatani
- 👤 Hitoshi Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:56
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87249
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
An apparatus for producing sterile air, comprising: a compressor; an air supply pipe connecting a sterilizing filter for filtering microbes to said compressor and disposed downstream therefrom; a connecting pipe connecting said sterilizing filter to an air heater disposed downstream from said sterilizing filter; a sterile air supply pipe connecting said air heater to a downstream aseptic tank, said sterile air supply pipe further having a shut-off valve; and an air or condensate discharging pipe having a discharge valve at least on the upstream side of said shut-off valve, said shutt-off valve being closed to discharge sterile air from said air heater through the discharge valve at an initial stage of the production of the sterile air.
Claim 2
Independent Claim
117 words
An apparatus for producing sterile air, comprising: a compressor; an air supply pipe connecting a sterilizing filter for filtering microbes to said compressor and disposed downstream therefrom; a connecting pipe connecting said sterilizing filter to an air heater disposed downstream from said sterilizing filter; a sterile air supply pipe connecting said air heater to a downstream aseptic tank, said sterile air supply pipe further having a shut-off valve; and an air or condensate discharging pipe having a discharge valve at least on the upstream side of said shut-off valve, said shutt-off valve being closed to discharge sterile air from said air heater through the discharge valve at an initial stage of the production of the sterile air.
Claim 3
Dependent Claim
19 words
An apparatus for producing sterile air according to claim 1, wherein said air heater is an electrical air heater.
Claim 4
Dependent Claim
18 words
An apparatus for producing sterile air according to claim 1, wherein said discharge valve is a needle valve.
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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |