US4955208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus having a stink removing device
Assignee: Hitachi Ltd
•
Filing: 1990-01-08
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Granted: 1990-09-11
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Expires: 2010-01-08
Abstract
Abstract A photocatalystic decomposing apparatus comprises absorbent including honeycomb form active carbon and titanium oxide acting as photocatalyst applied to a surface of the active carbon, and a light source for generating ultraviolet rays exciting the photocatalyst. Stink ingredient is absorbed to the active carbon by passing air flow through openings in the honeycomb, and the absorbed stink ingredient is decomposed by exciting the photocatalyst due to application of the ultraviolet rays.
Inventors
- 👤 Masaei Kawashima
- 👤 Reishi Naka
- 👤 Teruo Tsunoda
- 👤 Nobuyoshi Suenaga
- 👤 Syozo Ogawa
- 👤 Masaaki Kashiwabuchi
- 👤 Miyakichi Kameda
- 👤 Koosuke Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:25
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/16; A61L9/18; A61L9/20; B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8668; F; F25; F25D; F25D17/00; F25D17/04; F25D17/042; B01D2255/00; B01D2255/80; B01D2255/802; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0415; F25D2317/0417; F25D2317/06; F25D2317/068; F25D2317/0681
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
A refrigerating apparatus comprising means for constituting a refrigerating space, cooling means for cooling air in said refrigerating space, and stink removing means for removing stink ingredient in said air comprising absorbent, a layer of photocatalyst provided on a surface of said absorbent and excited by light and a light source for exciting said photocatalyst disposed in a flow passage for said air.
Claim 2
Dependent Claim
63 words
A refrigerating apparatus comprising means for constituting a refrigerating space, cooling means for cooling air in said refrigerating space, and stink removing means for removing stink ingredient in said air comprising absorbent, a layer of photocatalyst provided on a surface of said absorbent and excited by light and a light source for exciting said photocatalyst disposed in a flow passage for said air.
Claim 3
Dependent Claim
29 words
A refrigerating apparatus according to claim 1, wherein said flow passage is formed in a partition for dividing said refrigerating space into a refrigerating room and a freezing room.
Claim 4
Dependent Claim
24 words
A refrigerating apparatus according to claim 1, wherein said light source is illuminated in synchronous with initiation of defrost due to said cooling means.
Claim 5
Dependent Claim
36 words
A refrigerating apparatus according to claim 1, wherein said stink removing means has a blower fan, and air flow caused by said fan passes through said light source, said absorbent and said blower fan in order.
Claim 6
Dependent Claim
31 words
A refrigerating apparatus according to claim 1, wherein said absorbent provided with said photocatalyst is formed as a honeycomb form, sponge form, net form, fibre form, plate form or particle form.
Claim 7
Dependent Claim
32 words
A refrigerating apparatus according to claim 1, wherein said absorbent provided with said photocatalyst comprises honeycomb form active carbon, on which a layer of the photocatalyst of titanium dioxide group is formed.
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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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |