US2496595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formaldehyde corrosion inhibitor compositions
Assignee: Cities Service Oil Co
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Filing: 1948-09-30
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Granted: 1950-02-07
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Expires: 1968-09-30
Abstract
No abstract record available.
Inventors
- 👤 Melvin I Moyer
- 👤 Joseph M Hersh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:35
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/932; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A CORROSION INHIBITING COMPOSITION FOR INHIBITING THE CORROSIVE ACTION OF OIL WELL PRODUCTS CONTAINING HYDROGEN SULFIDE COMPRISING AN AQUEOUS SOLUTION OF FORMALDEHYDE AND HEXAMINE, IN THE RATIO OF FROM ABOUT 3 PARTS TO 40 PARTS OF FORMALDEHYDE TO ONE PART OF HEXAMINE, BY WEIGHT.
Claim 2
Dependent Claim
44 words
A CORROSION INHIBITING COMPOSITION FOR INHIBITING THE CORROSIVE ACTION OF OIL WELL PRODUCTS CONTAINING HYDROGEN SULFIDE COMPRISING AN AQUEOUS SOLUTION OF FORMALDEHYDE AND HEXAMINE, IN THE RATIO OF FROM ABOUT 3 PARTS TO 40 PARTS OF FORMALDEHYDE TO ONE PART OF HEXAMINE, BY WEIGHT.
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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |