US4383857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attack polish for nickel-base alloys and stainless steels
Assignee: United States Department of Energy
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Filing: 1981-07-06
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Granted: 1983-05-17
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Expires: 2001-07-06
Abstract
Abstract A chemical attack polish and polishing procedure for use on metal surfaces such as nickel base alloys and stainless steels. The chemical attack polish comprises Fe(NO 3 ) 3 , concentrated CH 3 COOH, concentrated H 2 SO 4 and H 2 O. The polishing procedure includes saturating a polishing cloth with the chemical attack polish and submicron abrasive particles and buffing the metal surface.
Inventors
- 👤 Arthur F. Steeves
- 👤 Donald P. Buono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:31
CPC Classifications
B; B24; B24B; B24B1/00; C; C09; C09G; C09G1/00; C09G1/02; C23; C23F; C23F3/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
57 words
A chemical attack polish for use in polishing metal surfaces consisting essentially of: about 3 to 7 gms Fe(NO 3 ) 3 , about 15 to 40 cc CH 3 COOH (concentrated), about 3 to 7 cc H 2 SO 4 (concentrated), and H 2 O in an amount sufficient to make about a 400 cc solution.
Claim 2
Dependent Claim
57 words
A chemical attack polish for use in polishing metal surfaces consisting essentially of: about 3 to 7 gms Fe(NO 3 ) 3 , about 15 to 40 cc CH 3 COOH (concentrated), about 3 to 7 cc H 2 SO 4 (concentrated), and H 2 O in an amount sufficient to make about a 400 cc solution.
Claim 3
Dependent Claim
19 words
The chemical polishing composition of claim 1 wherein the amount of Fe(NO 3 ) 3 is about 5 gms.
Claim 4
Dependent Claim
18 words
The chemical attack polish of claim 1 wherein the amount of CH 3 COOH is about 25 cc.
Claim 5
Dependent Claim
19 words
The chemical attack polish of claim 1 wherein the amount of H 2 SO 4 is about 5 cc.
Claim 6
Dependent Claim
48 words
The chemical attack polish of claim 1 consisting essentially of: about 5 gm Fe(NO 3 ) 3 , about 25 cc CH 3 COOH (concentrated), about 5 cc H 2 SO 4 (concentrated), and H 2 O in an amount sufficient to make about a 400 cc solution.
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) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |