US3175899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for operating steel works wherein oxygen or air enriched with oxygen is used as a refining means
Assignee: Individual
•
Filing: 1961-12-04
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Granted: 1965-03-30
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Kemmetmuller Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:10
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/18; F22B1/183
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
IN A METHOD USING COMPRESSED GAS, THE STEPS OF PRODUCING STEAM IN A STEAM BOILER; FEEDING THE STEAM PRODUCED IN THE STEAM BOILER TO DRIVE STEAM OPERATED PRIME MOVERS AND DRIVING WITH THE LATTER COMPRESSORS FOR PRODUCING COMPRESSED GAS; CONDENSING THE STEAM AFTER IT HAS PASSED THE PRIME MOVERS; COOLING THE COMPRESSORS AND THE COMPRESSES GAS PRODUCED THEREWITH WITH THE CONDENSATE THUS OBTAINED, THEREBY HEATING THE CONDENSATE; AND FEEDING THE HEATED CONDENSATE INTO SAID STEAM BOILER FOR SUBSEQUENT TRANSFORMATION INTO STEAM.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |