Patent US4374174A successfully refreshed from Google Patents.
US4374174A
Expired / Lapsed
US
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Composition and sheet materials for inhibiting corrosion of metals
Assignee: DAUBERT VCI Inc
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Filing: 1981-02-12
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Granted: 1983-02-15
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Expires: 2001-02-12
Abstract
Abstract Compositions and sheet materials for inhibiting the corrosion of metals, particularly aluminum and ferrous metals, and alloys thereof. The compositions comprise as their essential active ingredient an alkali metal salt of an unsaturated organic acid, especially a potassium salt of an acrylic acid such as sorbic acid. The compositions, when embodied in, or carried on, various sheet materials, provide protection for metal surfaces both in direct contact with the sheet materials as well as for those areas of the metal surfaces not in direct contact with the sheet materials.
Inventors
- 👤 Hazel R. Stricklin
- 👤 George W. Morrow, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:21
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
57 words
A corrosion inhibiting composition for inhibiting corrosive attack on metal surfaces by elements normally present in the atmosphere comprising as the essential active ingredient an alkali metal salt of sorbic acid, said active ingredient being characterized in that it acts both as a contact and as a vapor phase corrosion inhibitor with respect to a metal surface.
Claim 2
Dependent Claim
57 words
A corrosion inhibiting composition for inhibiting corrosive attack on metal surfaces by elements normally present in the atmosphere comprising as the essential active ingredient an alkali metal salt of sorbic acid, said active ingredient being characterized in that it acts both as a contact and as a vapor phase corrosion inhibitor with respect to a metal surface.
Claim 3
Independent Claim
63 words
A method of inhibiting corrosive attack on metal by elements normally present in the atmosphere comprising wrapping the metal in a sheet material embodying potassium sorbate, said sheet material acting to inhibit corrosive attack on the surfaces of the metal in those areas in direct contact with the sheet material as well as the areas thereof not in contact with the sheet material.
Claim 4
Independent Claim
63 words
A method of inhibiting corrosive attack on metal by elements normally present in the atmosphere comprising wrapping the metal in a sheet material embodying potassium sorbate, said sheet material acting to inhibit corrosive attack on the surfaces of the metal in those areas in direct contact with the sheet material as well as the areas thereof not in contact with the sheet material.
Claim 5
Dependent Claim
11 words
A method according to claim 2 wherein the metal is aluminum.
Claim 6
Dependent Claim
37 words
A composition according to claim 1 wherein the active ingredient is incorporated in a liquid carrier which is a solvent for same, the active ingredient comprising from about 10% to about 70%, by weight, of the solution.
Claim 7
Dependent Claim
13 words
A composition according to claim 1 wherein the active ingredient is potassium sorbate.
Claim 8
Dependent Claim
12 words
A composition according to claim 4 wherein the liquid carrier is water.
Claim 9
Dependent Claim
42 words
An article of manufacture which acts as a contact and a vapor phase inhibitor for inhibiting the corrosion of metals comprising a solid carrier in sheet form having incorporated therein as an essential active ingredient an alkali metal salt of sorbic acid.
Claim 10
Dependent Claim
42 words
An article of manufacture which acts as a contact and a vapor phase inhibitor for inhibiting the corrosion of metals comprising a solid carrier in sheet form having incorporated therein as an essential active ingredient an alkali metal salt of sorbic acid.
Claim 11
Dependent Claim
12 words
An article according to claim 7 wherein the salt is potassium sorbate.
Claim 12
Dependent Claim
33 words
An article according to claim 7 wherein the active ingredient is present in a concentration of from about 0.1 to about 10 grams per square foot of surface area of the solid carrier.
Claim 13
Dependent Claim
33 words
An article according to claim 8 wherein the potassium sorbate is present in a concentration of from about 1 to about 3 grams per square foot of surface area of the solid carrier.
Claim 14
Dependent Claim
14 words
An article according to claim 7 wherein the solid carrier is paper sheet stock.
Claim 15
Dependent Claim
15 words
An article according to claim 7 wherein the solid carrier is a plastic sheet material.
Claim 16
Independent Claim
53 words
A method of inhibiting water spotting on stacked newly formed metal sheet stock comprising interleafing between successive layers of the metal sheet stock a layer of a paper sheet stock having incorporated therein potassium sorbate, the dimensions of the paper sheet stock being substantially equal to the dimensions of the metal sheet stock.
Claim 17
Independent Claim
53 words
A method of inhibiting water spotting on stacked newly formed metal sheet stock comprising interleafing between successive layers of the metal sheet stock a layer of a paper sheet stock having incorporated therein potassium sorbate, the dimensions of the paper sheet stock being substantially equal to the dimensions of the metal sheet stock.
Claim 18
Dependent Claim
15 words
A method according to claim 13 wherein the metal sheet stock is fabricated of aluminum.
Claim 19
Dependent Claim
16 words
A method according to claim 13 wherein the metal sheet stock is fabricated of galvanized steel.
Claim 20
Dependent Claim
37 words
A method according to claim 13 wherein the concentration of the potassium sorbate in the paper sheet stock is from about 1 to about 3 grams per square foot of surface area of the paper sheet stock.
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) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |