US3386798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing sulfur compounds and precovering heat from combustion gases
Assignee: Trane US Inc
•
Filing: 1964-11-30
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Granted: 1968-06-04
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Rowland S Bevans
- 👤 Perter N Renzi
- 👤 Yashwant R Loonkar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/04; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/501; F23L; F23L15/00; F23L15/04; F23L15/045; Y; Y02; Y02E; Y02E20/00; Y02E20/34; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091689A
Cited
US2165784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |