Patent US4555445A successfully refreshed from Google Patents.
US4555445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant lubricant coating composite
Assignee: NOF Metal Coatings North America Inc
•
Filing: 1984-03-30
•
Granted: 1985-11-26
•
Expires: 2004-03-30
Abstract
Abstract A coating composite provides desirable corrosion resistance for substrate metals, as well as, enhanced torque control where desired. The undercoat of the composite can be metal in elemental form or can be exemplified by being chromium-containing, either in elemental or non-elemental form. The special topcoat composition, containing copolymer component and silicate substance in liquid medium, is applied directly to the undercoating. In addition to corrosion resistance and torque control, the composite provides the substrate metal with excellent heat, abrasion and solvent resistance. Before use, the special topcoating displays outstanding shelf stability.
Inventors
- 👤 Gary T. Frey
- 👤 Douglas H. Strong
- 👤 Janet B. Urbanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:00
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/83; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12063; Y10T428/12139; Y10T428/25; Y10T428/27; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31801
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A coated article of manufacture having a heat resistant and corrosion-resistant coating composite that includes a smooth, uniform topcoating which article comprises substrate metal, an undercoating containing metal in elemental form, or chromium in non-elemental form, or mixtures thereof, and a heat-cured particulate-metal-free, smooth and uniform topcoating from a composition heat curable to a water resistant protective coating, said composition containing liquid medium, polyethylene-containing copolymer component and silicate substance compatible with said copolymer component in liquid medium.
Claim 2
Dependent Claim
77 words
A coated article of manufacture having a heat resistant and corrosion-resistant coating composite that includes a smooth, uniform topcoating which article comprises substrate metal, an undercoating containing metal in elemental form, or chromium in non-elemental form, or mixtures thereof, and a heat-cured particulate-metal-free, smooth and uniform topcoating from a composition heat curable to a water resistant protective coating, said composition containing liquid medium, polyethylene-containing copolymer component and silicate substance compatible with said copolymer component in liquid medium.
Claim 3
Dependent Claim
38 words
The coated article of claim 1 wherein said undercoating is the first coating on the substrate metal and said substrate metal is selected from the group consisting of ferrous metal and nickel-, cadmium-, cobalt-, aluminum-, and chromium-containing alloys.
Claim 4
Dependent Claim
12 words
The coated article of claim 1 wherein said undercoating contains metallic zinc.
Claim 5
Dependent Claim
19 words
The coated article of claim 3 wherein said metallic zinc coating is a galvanized zinc or zinc electrodeposited coating.
Claim 6
Dependent Claim
52 words
The coated article of claim 1 wherein said smooth, uniform topcoating is provided by a chromium-free topcoat composition containing ethylene acrylic acid copolymer or ethylene vinyl acetate copolymer, as well as containing surface active agent, coloring agent and from about 0.25 weight percent to about 25 weight percent of copolymer component solids.
Claim 7
Dependent Claim
33 words
The coated article of claim 5 wherein said topcoating is from acrylic-polyethylene copolymer topcoat composition and said topcoating is present in an amount from about 10 to about 5000 milligrams per square foot.
Claim 8
Dependent Claim
12 words
The coated article of claim 1 wherein said substrate metal is steel.
Claim 9
Dependent Claim
24 words
The coated article of claim 1 wherein said undercoating containing chromium in non-elemental form is established from solvent-based, heat-curable, composition containing hexavalent chromium-providing substance.
Claim 10
Dependent Claim
39 words
The coated article of claim 1 wherein said smooth, uniform topcoating is present from a chromium-free topcoat composition containing surface active agent, coloring agent and from about 0.25 weight percent to about 25 weight percent of wax component solids.
Claim 11
Dependent Claim
24 words
The coated article of claim 9 wherein said topcoating is present in an amount from about 10 to about 5000 milligrams per square foot.
References Cited (Backward Citations)
US3297616A
Cited
US3450661A
Cited
US3860550A
Cited
JPS51145906A
Cited
US4330446A
Cited
JPS53125239A
Cited
US4341878A
Cited
US4225350A
Cited
US4222779A
Cited
US4407899A
Cited
US4365003A
Cited
US4404114A
Cited
US4487815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |