US4216032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil composition and method for treating phosphated metal surfaces
Assignee: Individual
•
Filing: 1978-09-27
•
Granted: 1980-08-05
•
Expires: 1998-09-27
Abstract
Abstract Superior corrosion resistance is provided by an improved oil composition an aqueous emulsified phosphating oil, an effective amount of polyvinylpyrrolidone and metallic zinc powder dispersed therein, which is applied, preferably by immersion or spraying, to a phosphated metal surface.
Inventors
- 👤 Jacob Hyner
- 👤 Jacob M. Hage
- 👤 Stephen Gradowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/10; C09D5/106; C23; C23C; C23C22/00; C23C22/82; C23C22/83
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
33 words
In an improved aqueous emulsion or nonaqueous solution of oil for treatment of phosphated metal surfaces to improve corrosion resistance, the improvement comprising an effective amount of polyvinylpyrrolidone and dispersed metallic zinc powder.
Claim 2
Dependent Claim
33 words
In an improved aqueous emulsion or nonaqueous solution of oil for treatment of phosphated metal surfaces to improve corrosion resistance, the improvement comprising an effective amount of polyvinylpyrrolidone and dispersed metallic zinc powder.
Claim 3
Dependent Claim
33 words
The improved composition of claim 1, wherein said effective amount of polyvinylpyrrolidone ranges between 1 to 60 grams per liter and said dispersed zinc powder ranges from 1 to 100 grams per liter.
Claim 4
Dependent Claim
47 words
An improved composition of claim 1, wherein (a) said aqueous emulsion or nonaqueous solution of oil ranges between 1 to 40 by volume; (b) said polyvinylpyrrolidone ranges between 1 to 60 grams per liter; and (c) said zinc powder ranges between 1 to 100 grams per liter.
Claim 5
Dependent Claim
48 words
The improved composition of claim 3, wherein said aqueous emulsion or nonaqueous solution of oil comprises an oil selected from the group consisting of mineral oils, vegetable oils, animal oils, synthetic oils and any combination thereof, together with suitable emulsifiers, stabilizers, extenders, corrosion resistant additives or like additives.
Claim 6
Dependent Claim
27 words
The improved composition of claim 3, wherein said bath is applied by immersion of said phosphated metal surface therein or by spraying said bath upon said surface.
Claim 7
Dependent Claim
27 words
An improved method for providing superior corrosion resistance to a phosphated metal surface comprising application of the improved composition of claim 1 to said phosphated metal surface.
Claim 8
Dependent Claim
15 words
The improved method of claim 6, wherein said bath is applied by immersion or spraying.
Claim 9
Dependent Claim
21 words
The improved method of claim 6, wherein the temperature of said composition is maintained at between 75°-160° F. during said application.
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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |