US3265040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion gas stack for steam generating plant
Assignee: Sulzer AG
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Filing: 1964-11-10
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Granted: 1966-08-09
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Expires: 1984-11-10
Abstract
No abstract record available.
Inventors
- 👤 Chen Yian-Nian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
F; F22; F22D; F22D1/00; F22D1/02; F22B; F22B1/00; F22B1/02; F22B1/16; F22B21/00; F22B37/00; F22B37/02; F22B37/10; F22B37/40; F23; F23J; F23J11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A STEAM GENERATOR COMBUSTION GAS STACK COMPRISING STACK WALLS, TUBES EXTENDING ACROSS THE STACK BETWEEN SAID WALLS IN A DIRECTION TRANSVERSE TO THE DIRECTION OF COMBUSTION GAS STREAMING THROUGH THE STACK, AND A PLURALITY OF PARTITIONS DISPOSED WITHIN THE STACK AT POSITIONS SUCCESSIVELY TRAVERSED BY THE GASES IN STREAMING THROUGH
Claim 2
Dependent Claim
50 words
A STEAM GENERATOR COMBUSTION GAS STACK COMPRISING STACK WALLS, TUBES EXTENDING ACROSS THE STACK BETWEEN SAID WALLS IN A DIRECTION TRANSVERSE TO THE DIRECTION OF COMBUSTION GAS STREAMING THROUGH THE STACK, AND A PLURALITY OF PARTITIONS DISPOSED WITHIN THE STACK AT POSITIONS SUCCESSIVELY TRAVERSED BY THE GASES IN STREAMING THROUGH
References Cited (Backward Citations)
US2893509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |