US2851426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for inhibiting corrosion of metals
Assignee: Cities Service Research and Development Co
•
Filing: 1956-05-01
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Granted: 1958-09-09
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Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:37
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/06; C07D417/10; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
AS A NEW COMPOSITION OF MATTER, A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
AS A NEW COMPOSITION OF MATTER, A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
38 words
THE PROCESS OF REDUCING THE CORROSION OF METALS WHEN EXPOSED TO THE CORROSIVE ACTION OF CORROSIVE FLUIDS WHICH COMPRISES INTRODUCING INTO SAID CORROSIVE FLUIDS A SMALL QUANTITY SUFFICIENT TO SUBSTANTIALLY INHIBIT CORROSION OF AN INHIBITOR HAVING THE FORMULA
Claim 4
Dependent Claim
38 words
THE PROCESS OF REDUCING THE CORROSION OF METALS WHEN EXPOSED TO THE CORROSIVE ACTION OF CORROSIVE FLUIDS WHICH COMPRISES INTRODUCING INTO SAID CORROSIVE FLUIDS A SMALL QUANTITY SUFFICIENT TO SUBSTANTIALLY INHIBIT CORROSION OF AN INHIBITOR HAVING THE FORMULA
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |