US2814593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibition
Assignee: GAF Chemicals Corp
•
Filing: 1953-12-18
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Granted: 1957-11-26
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Expires: 1973-12-18
Abstract
No abstract record available.
Inventors
- 👤 John P G Beiswanger
- 👤 Raymond L Mayhew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:50
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; Y; Y10; Y10S; Y10S507/00; Y10S507/933; Y10S507/934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A CORROSION INHIBITING COMPOSITION FOR ADDITION TO AQUEOUS SOLUTIONS NORMALLY CORROSIVE TO METAL SURFACES COMPRISES (A) A WATER SOLUBLE NON-SURFACE ACTIVE QUATERNIZED N-HETEROCYCLIC BASE CONTAINING WATER-INSOLUBLE COMPONENTS, AND (B) A WATER SOLUBLE NON-IONIC SURFACE ACTIVE AGENT CONTAINING A POLYOXYETHYLENE GROUP.
Claim 2
Dependent Claim
40 words
A CORROSION INHIBITING COMPOSITION FOR ADDITION TO AQUEOUS SOLUTIONS NORMALLY CORROSIVE TO METAL SURFACES COMPRISES (A) A WATER SOLUBLE NON-SURFACE ACTIVE QUATERNIZED N-HETEROCYCLIC BASE CONTAINING WATER-INSOLUBLE COMPONENTS, AND (B) A WATER SOLUBLE NON-IONIC SURFACE ACTIVE AGENT CONTAINING A POLYOXYETHYLENE GROUP.
References Cited (Backward Citations)
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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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |