Patent US2661821A successfully refreshed from Google Patents.
US4054694A
Expired / Lapsed
US
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Method for applying fatigue-resistant surface coating
Assignee: Mobil Oil AS
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Filing: 1975-11-24
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Granted: 1977-10-18
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Expires: 1995-11-24
Abstract
Abstract Means are provided for imparting an adherent wear and fatigue-resistant thin surface film on a metal object prior to contact of said object with another surface by the application of dinonylphenyl hydrogen phosphonate to form a surface reaction coating on the metal object.
Inventors
- 👤 Henry Raich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A method for forming an adherent, wear and fatigue resistant, protective film on a surface of a metal object, prior to contact of the object with another metal surface, which comprises: a. coating and reacting the surface of the object with a solution of dinonylphenyl hydrogen phosphonate in a non-reactive solvent; b. thereafter removing the non-reactive solvent with a solvent in which the non-reactive solvent is soluble; and, c. drying the metal object after removal of the non-reactive solvent from the surface thereof.
Claim 2
Independent Claim
83 words
A method for forming an adherent, wear and fatigue resistant, protective film on a surface of a metal object, prior to contact of the object with another metal surface, which comprises: a. coating and reacting the surface of the object with a solution of dinonylphenyl hydrogen phosphonate in a non-reactive solvent; b. thereafter removing the non-reactive solvent with a solvent in which the non-reactive solvent is soluble; and, c. drying the metal object after removal of the non-reactive solvent from the surface thereof.
Claim 3
Dependent Claim
23 words
The method of claim 1 in which the non-reactive solvent is selected from the group consisting of hydrocarbon solvents, mineral oils and esters.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the non-reactive solvent is a non-lubricating solvent.
Claim 5
Dependent Claim
28 words
The method of claim 1 in which the dinonylphenyl hydrogen phosphonate is incorporated into the non-reactive solvent in an amount from about 0.001 to about 5%, by weight.
Claim 6
Dependent Claim
28 words
The method of claim 1 in which the dinonylphenyl hydrogen phosphonate is incorporated into the non-reactive solvent in an amount from about 0.1 to about 3%, by weight.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein the reaction takes place at a temperature within the range of 150° F to 250° F.
Claim 8
Independent Claim
58 words
A method for forming an adherent, wear and fatigue resistant, protective film on a surface of a metal object, prior to contact of the object with another metal surface, which comprises: a. coating and reacting the surface of the object with dinonylphenyl hydrogen phosphonate alone, and b. removing excess dinonylphenyl hydrogen phosphonate from the surface of the object.
Claim 9
Independent Claim
58 words
A method for forming an adherent, wear and fatigue resistant, protective film on a surface of a metal object, prior to contact of the object with another metal surface, which comprises: a. coating and reacting the surface of the object with dinonylphenyl hydrogen phosphonate alone, and b. removing excess dinonylphenyl hydrogen phosphonate from the surface of the object.
Claim 10
Dependent Claim
22 words
The method of claim 7 wherein the reaction takes place at a temperature within the range of 150° F to 250° F.
References Cited (Backward Citations)
US3329742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |