US3281278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitors
Assignee: Union Carbide Corp
•
Filing: 1963-10-28
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Granted: 1966-10-25
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Hugh F Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:21
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/628; H01M6/00; H01M6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A METHOD INHIBITING CORROSION OF ZINC EXPOSED TO AN ALKALINE ENVIRONMENT WHICH COMPRISES EFFECTING SAID EXPOSURE IN THE PRESENCE OF A CORROSION INHIBITOR SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID SAID AND 4-BIPHENYLCARBOXYLIC ACID.
Claim 2
Independent Claim
35 words
A METHOD INHIBITING CORROSION OF ZINC EXPOSED TO AN ALKALINE ENVIRONMENT WHICH COMPRISES EFFECTING SAID EXPOSURE IN THE PRESENCE OF A CORROSION INHIBITOR SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID SAID AND 4-BIPHENYLCARBOXYLIC ACID.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |