Patent US4293447A successfully refreshed from Google Patents.
US4293447A
Expired / Lapsed
US
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Process for repairing plate-shaped denitrating catalysts
Assignee: Kanadevia Corp
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Filing: 1980-03-11
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Granted: 1981-10-06
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Expires: 2000-03-11
Abstract
Abstract A plate-shaped denitrating catalyst comprising a metal net, a finely divided porous carrier retained on the metal net with a binder and covering the metal net, and an active component supported on the carrier.
Inventors
- 👤 Hideya Inaba
- 👤 Kenichi Nagai
- 👤 Masayoshi Ichiki
- 👤 Yasumi Kamino
- 👤 Kazuo Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:40
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9404; B01D53/9409; B01D53/9413; B01D53/9418; B01J; B01J37/00; B01J37/02; B01J37/024; B01D2251/00; B01D2251/20; B01D2251/206; B01D2251/2062; B01D2255/00; B01D2255/20; B01D2255/207; B01D2255/20707; B01D2255/20723; B01D2255/20738; B01D2255/20769; B01J35/00; B01J35/50; B01J35/56; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A process for producing a catalyst for reducing nitrogen oxides in exhaust gases comprising the steps of applying a slurry composed of finely divided titania and a binder to a metal net, drying the resulting coating to cause the titania and the binder to be retained on and cover the metal net, immersing the coated net in a solution of a salt of an active component, and drying and baking the immersed body.
Claim 2
Dependent Claim
73 words
A process for producing a catalyst for reducing nitrogen oxides in exhaust gases comprising the steps of applying a slurry composed of finely divided titania and a binder to a metal net, drying the resulting coating to cause the titania and the binder to be retained on and cover the metal net, immersing the coated net in a solution of a salt of an active component, and drying and baking the immersed body.
Claim 3
Dependent Claim
69 words
A process for producing a catalyst for reducing nitrogen oxides in exhaust gases comprising the steps of applying a slurry composed of a binder and finely divided titania having an active component supported thereon to a metal net, drying the resulting coating to cause the titania having the active component supported thereon and the binder to be retained on and cover the metal net and baking the resulting mass.
Claim 4
Dependent Claim
69 words
A process for producing a catalyst for reducing nitrogen oxides in exhaust gases comprising the steps of applying a slurry composed of a binder and finely divided titania having an active component supported thereon to a metal net, drying the resulting coating to cause the titania having the active component supported thereon and the binder to be retained on and cover the metal net and baking the resulting mass.
Claim 5
Dependent Claim
61 words
A process for producing a catalyst for reducing nitrogen oxides in exhaust gases comprising immersing a metal net in a coating bath containing titania and a binder, drying the immersed net to form a coating which covers the metal net, immersing the coated net in a solution of a salt of an active component, and drying and baking the immersed body.
Claim 6
Dependent Claim
61 words
A process for producing a catalyst for reducing nitrogen oxides in exhaust gases comprising immersing a metal net in a coating bath containing titania and a binder, drying the immersed net to form a coating which covers the metal net, immersing the coated net in a solution of a salt of an active component, and drying and baking the immersed body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |