Patent US2721183A successfully refreshed from Google Patents.
US2721183A
Expired / Lapsed
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Dibasic alkali metal arsenate and alkali tetraborate mixture as corrosion inhibitor for aqueous glycol composition
Assignee: Genesee Res Corp
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Filing: 1951-10-25
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Granted: 1955-10-18
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Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Chester M White
- 👤 Robert E Ivancic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:53
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A LIQUID COMPOSITION SUITABLE FOR USE IN AQUEOUS HEAT EXCHANGE SYSTEMS AND INHIBITED AGAINST METAL CORROSION, CONSISTING ESSENTICALLY OF A BLEND OF 65% ETHYLENE GLYCOL AND 35% PROPYLENE GLYCOL CONTAINING 0.15% TO 4.0% OF A DIBASIC ALKALI METAL ARSENATE AND 1.5% TO 6.5% OF AN ALKALI TETRABORATE.
Claim 2
Dependent Claim
47 words
A LIQUID COMPOSITION SUITABLE FOR USE IN AQUEOUS HEAT EXCHANGE SYSTEMS AND INHIBITED AGAINST METAL CORROSION, CONSISTING ESSENTICALLY OF A BLEND OF 65% ETHYLENE GLYCOL AND 35% PROPYLENE GLYCOL CONTAINING 0.15% TO 4.0% OF A DIBASIC ALKALI METAL ARSENATE AND 1.5% TO 6.5% OF AN ALKALI TETRABORATE.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |