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US3725012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing high pressure inert gas
Assignee: Individual
•
Filing: 1971-01-27
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Granted: 1973-04-03
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Expires: 1991-01-27
Abstract
Abstract AN INTERNAL COMBUSTION ENGINE, AT LEAST ONE COMPRESSOR ATTACHED TO AND DRIVEN BY THE ENGINE, A COMBUSTOR TO WHICH THE EXHAUST OF THE ENGINE IS CONDUCTED ALONG WITH GAS AND AIR WHICH IS BURNED IN THE COMBUSTOR, A HIGH TEMPERATURE AIR COOLED HEAT EXCHANGER HAVING AN INLET HEADER, AN OUTLET HEADER, AND FINNED TUBE COMMUNICATING BETWEEN THE HEADERS, THE GAS OUTLET FROM THE COMBUSTOR PASSING THROUGH THE HEAT EXCHANGER, A FAN FOR PASSING AMBIENT AIR BETWEEN THE FINNED TUBE FOR COOLING THE GAS OUTPUT OF THE COMBUSTOR, A CATALYTIC CONVERTER THROUGH WHICH THE GAS IS PASSED BEFORE PASSING TO THE COMPRESSOR, HIGH PRESSURE INERT GAS BEING DELIVERED AT THE COMPRESSOR OUTLET.
Inventors
- 👤 G Gower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:48
CPC Classifications
F; F01; F01N; F01N3/00; F01N5/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |