US3249548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibiting composition comprising 4-ethyl-1-octyn-3-ol
Assignee: Cumberland Chemical Corp
•
Filing: 1958-10-31
•
Granted: 1966-05-03
•
Expires: 1978-10-31
Abstract
No abstract record available.
Inventors
- 👤 Charles O Herman
- 👤 John G Funkhouser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:31
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
48 words
A METHOD OF CLEANING A FERROUS METAL WITH AQUEOUS INORGANIC ACIDS WHICH COMPRISES CONTACTING THE FERROUS METAL WITH AN AQUEOUS INORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SULFURIC ACID, AND PHOSPHORIC ACID, CONTAINING FROM ABOUT 0.0125 PERCENT TO ABOUT 0.5 PERCENT BY WEIGHT OF 4-ETHYL-1-OCTYN-3-OL.
Claim 2
Dependent Claim
54 words
A COMPOSITION CONSISTING ESSENTIALLY OF WATER, FROM ABOUT 0.2% TO ABOUT 0.5% BY WEIGHT OF THE COMBINATION OF 4-ETHYL-1-OCTYN-3-OL AND A LOWER ALKYL PYRIDINE, AND AN INORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SULFURIC ACID, AND PHOSPHORIC ACID, SAID 4-ETHYL-1-OCTYN-3-OL AND SAID LOWER ALKYL PYRIDINE BEING PRESENT IN A 1:1 RATIO.
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |