Patent US4636368A successfully refreshed from Google Patents.
US4636368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized acidic aqueous solutions containing hydrogen peroxide and metallic ions and processes
Assignee: Arkema France SA
•
Filing: 1985-04-17
•
Granted: 1987-01-13
•
Expires: 2005-04-17
Abstract
Abstract A stabilized acidic aqueous composition comprising hydrogen peroxide, metallic ions, and 3-amino-1,2,4-triazine, said triazine being present in an amount sufficient to improve the stability of said composition against decomposition of said peroxide and the methods of utilizing such composition to treat metallic surfaces and to precipitate hydrated uranium peroxide from a solution containing uranium dissolved therein.
Inventors
- 👤 Christian Pralus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:14
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/037; C01B15/04; C01B15/047; C01B15/0475; C22; C22B; C22B3/00; C22B3/04; C22B3/16; C22B3/1608; C22B3/1616; C22B3/1625; C22B3/20; C22B3/44; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23G; C23G1/00; C23G1/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
A stabilized acidic aqueous composition comprising hydrogen peroxide, metallic ions, and 3-amino-1,2,4-triazine, said triazine being present in an amount sufficient to improve the stability of said composition against decomposition of said peroxide.
Claim 2
Dependent Claim
32 words
A stabilized acidic aqueous composition comprising hydrogen peroxide, metallic ions, and 3-amino-1,2,4-triazine, said triazine being present in an amount sufficient to improve the stability of said composition against decomposition of said peroxide.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein said triazine is present in an amount up to about 2 grams per liter of said composition.
Claim 4
Dependent Claim
43 words
The composition of claim 1 or 2 wherein said peroxide is present in an amount up to about 150 grams per liter of composition and said composition contains an acid present in an amount up to about 300 grams per liter of composition.
Claim 5
Dependent Claim
21 words
The composition of claim 3 wherein said acid is a mineral acid selected from sulfuric acid, phosphoric acid, or hydrofluoric acid.
Claim 6
Dependent Claim
36 words
The method of treating a metal surface comprising applying thereto the composition of claim 1, 2, 3, or 4 in an amount sufficient and for a time and at a temperature sufficient to effect such treatment.
Claim 7
Dependent Claim
44 words
The method of precipitating hydrated uranium peroxide from a solution containing uranium dissolved therein comprising adding thereto the composition of claim 1, 2, 3, or 4 in an amount sufficient and for a time and at a temperature sufficient to precipitate said uranium peroxide.
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) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |