US2711364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing metals and composition therefor
Assignee: Individual
•
Filing: 1953-12-31
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Granted: 1955-06-21
•
Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 John G Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:08
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/38; C23; C23F; C23F3/00; C23F3/04; C23F3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS OF POLISHING THE SURFACE OF ZIRCONIUM METAL CONTAINING ZIRCONIUM CARBIDE OCCLUSIONS COMPRISING IMMERSING SAID SURFACE INTO AN AQUEOUS SOLUTION OF ABOUT 60 TO 85*F. CONSISTING PER ONE LITER OF SOLUTION OF WATER, AT LEAST 50 GRAMS OF THE WATER-SOLUBLE FLUORIDE 350 TO 600 CC OF CONCENTRATED NITRIC AND FROM 175 TO 400 CC. OF A 30% FLUOSILIC ACID.
Claim 2
Dependent Claim
60 words
A PROCESS OF POLISHING THE SURFACE OF ZIRCONIUM METAL CONTAINING ZIRCONIUM CARBIDE OCCLUSIONS COMPRISING IMMERSING SAID SURFACE INTO AN AQUEOUS SOLUTION OF ABOUT 60 TO 85*F. CONSISTING PER ONE LITER OF SOLUTION OF WATER, AT LEAST 50 GRAMS OF THE WATER-SOLUBLE FLUORIDE 350 TO 600 CC OF CONCENTRATED NITRIC AND FROM 175 TO 400 CC. OF A 30% FLUOSILIC 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) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |