US3726956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for dissolving molybdenum and tungsten
Assignee: Individual
•
Filing: 1972-02-23
•
Granted: 1973-04-10
•
Expires: 1992-02-23
Abstract
Abstract Method of dissolving tungsten or molybdenum materials such as molybdenum coatings from fissionable materials such as nuclear fuel ceramic particles by contacting the molybdenum with sodium hypochlorite (NaClO) solution until desired dissolution is generally complete.
Inventors
- 👤 G Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:48
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; C; C01; C01G; C01G39/00; C01G41/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
17 words
The method of claim 1, together with providing said available chlorine by adding an alkali metal hypochlorite.
Claim 2
Dependent Claim
18 words
The method of claim 1 wherein said bath is at a temperature from about 80*C to about 100*C.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein said mercuric nitrate concentration is from 0.1 mg/ml to about 3.0 mg/ml.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |