US2586331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling inhibitor
Assignee: Beazer East Inc
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Filing: 1946-05-01
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Granted: 1952-02-19
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Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 William H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:38
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
A CONDENSATION PRODUCT OF AN ALDEHYDE AND A PREFORMED THIOCYANATE SALT OF A TERT-ALKYLOL AMINE.
Claim 2
Dependent Claim
15 words
A CONDENSATION PRODUCT OF AN ALDEHYDE AND A PREFORMED THIOCYANATE SALT OF A TERT-ALKYLOL AMINE.
Claim 3
Dependent Claim
85 words
A CLEANING AND PICKLING COMPOSITION FOR METAL SUBJECT TO ATMOSPHERIC CORROSION AND FOR REMOVING OXIDES AND OTHER CORROSION PRODUCTS FROM SURFACE OF SAID METAL, SAID COMPOSITION COMPRISING A PICKLING ACID SOLUTION HAVING DISSOLVED THEREIN A RELATIVELY SMALL PROPORTION OF A REACTION PRODUCT OF AN ALDEHYDE AND A PREFORMED THIOCYANATE OF A BASIC AMINO COMPOUND SELECTED FROM THE CLASS CONSISTING OF BASIC MONO AMINES, SAID REACTION PROCUCT BEING SOLUBLE IN SAID PICKLING ACID SOLUTION IN A PROPORTION WHICH INHIBITS DISSOLUTION OF SAID METAL BY SAID ACID.
Claim 4
Dependent Claim
85 words
A CLEANING AND PICKLING COMPOSITION FOR METAL SUBJECT TO ATMOSPHERIC CORROSION AND FOR REMOVING OXIDES AND OTHER CORROSION PRODUCTS FROM SURFACE OF SAID METAL, SAID COMPOSITION COMPRISING A PICKLING ACID SOLUTION HAVING DISSOLVED THEREIN A RELATIVELY SMALL PROPORTION OF A REACTION PRODUCT OF AN ALDEHYDE AND A PREFORMED THIOCYANATE OF A BASIC AMINO COMPOUND SELECTED FROM THE CLASS CONSISTING OF BASIC MONO AMINES, SAID REACTION PROCUCT BEING SOLUBLE IN SAID PICKLING ACID SOLUTION IN A PROPORTION WHICH INHIBITS DISSOLUTION OF SAID METAL BY SAID 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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |