US3555841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arsenic trioxide corrosion inhibitor for absorption refrigeration system
Assignee: Trane US Inc
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Filing: 1968-07-15
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Granted: 1971-01-19
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Expires: 1988-07-15
Abstract
Abstract EVOLUTION OF HYDROGEN AND CORROSION OF IRON AND COPPER CONSTRUCTION MATERIALS IN A CLOSED, SUBSTANTIALLY ANAEROBIC REFRIGERATION SYSTEM OF AN ABSORPTION REFRIGERATION MACHINE IS SUCCESSFULLY CONTROLLED BY ADDITION OF AN ARSENIC TRIOXIDE INHIBITOR TO THE LITHIUM BROMIDE ABSORBENT SOLUTION. THE ABSORBENT SOLUTION IS MAINTAINED AT A BASICITY OF FROM 0.1 N TO 0.5 N BASED ON A 60% LITHIUM BROMIDE SOLUTION.
Inventors
- 👤 Robert J Modahl
- 👤 Paul J Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:04
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/047
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |