US3125474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling zirconium and zirconium base alloys
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:26
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/10; C23G1/106; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/26; Y; Y10; Y10S; Y10S376/00; Y10S376/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
THE PROCESS OF PICKLING ZIRCONIUMAND ZIRCONIUM BASE ALLOYS, COMPRISING, APPLYING TO MEMBERS OF THE ALLOY AN AQUEOUS PICKLING SOLUTION CONSISTING ESSENTIALLY OF, BY WEIGHT, FROM 0.3% TO 3% HYDROGEN FLUORIDE, NOT EXCEEDING 20% OF ACETIC ACID, AND 3% TO 30% AMMONIUM PERSULTFATE FOR A PERIOD OF TIME AT A TEMPERATURE OF FROM 70*F. TO 120*F.
References Cited (Backward Citations)
US1969678A
Cited
US2678876A
Cited
US2684892A
Cited
US2942954A
Cited
US2856275A
Cited
US2981610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |