US3749554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing erosion and corrosion of metal surfaces
Assignee: Union Oil Company of California
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Filing: 1971-09-01
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Granted: 1973-07-31
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Expires: 1991-09-01
Abstract
Abstract EROSION AND CORROSION OF METAL SURFACES EXPOSED TO A FLOWING STREAM OF HOT GASES CONTAINING DISPERSED PARTICLES OF SOLID MATERIAL ARE REDUCED BY INTRODUCING INTO THE FLOWING STREAM AN ADDITIVE THAT DECOMPOSES AT THE TEMPERATURE AND PRESSURE OF THE GAS TO RELEASE AMMONIA OR A VAPOROUS AMINE AND FORM A RESINOUS RESIDUE. THE ADDITIVE IS PREFERABLY INTRODUCED INTO THE GAS IN AN INERT CARRIER LIQUID.
Inventors
- 👤 P Fischer
- 👤 G Maly
- 👤 D Pyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02; C09; C09K; C09K8/00; C09K8/52; E; E21; E21B; E21B21/00; E21B21/14
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |