US2889193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filming type corrosion inhibitor for steam and condensate lines
Assignee: Dearborn Chemical Co
•
Filing: 1956-11-14
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Granted: 1959-06-02
•
Expires: 1976-11-14
Abstract
No abstract record available.
Inventors
- 👤 Wayne L Denman
- 👤 Hwa Chih Ming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:44
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE METHOD OF INHIBITING CORROSION ON METALLIC SURFACES SUBJECT TO CORROSION BY A STEAM CONDENSATE WHICH COMPRISES VAPORIZING AND FORMING A FILM OF A COMPOUND ON SAID METALLIC SURFACES BY DISPOSITION FROM THE STEAM, WHICH FILM CONSISTS ESSENTIALLY OF A COMPOUND HAVING THE FORMULA:
Claim 2
Independent Claim
44 words
THE METHOD OF INHIBITING CORROSION ON METALLIC SURFACES SUBJECT TO CORROSION BY A STEAM CONDENSATE WHICH COMPRISES VAPORIZING AND FORMING A FILM OF A COMPOUND ON SAID METALLIC SURFACES BY DISPOSITION FROM THE STEAM, WHICH FILM CONSISTS ESSENTIALLY OF A COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
USRE23227E
Cited
CA528579A
Cited
US2562571A
Cited
US2587249A
Cited
US2582138A
Cited
US2771417A
Cited
US2720490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |