US4683157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic coating compositions and methods
Assignee: Technology Holding Co II
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Filing: 1985-09-18
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Granted: 1987-07-28
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Expires: 2005-09-18
Abstract
Abstract Metal part coated with a cured coating composition comprising (a) an acid aqueous solution of phosphate ions and ions of chromate or molybdate, (b) an acid-stable amorphous silica and (c) a non-ionic surfactant wherein the silica is crosslinked with the surfactant.
Inventors
- 👤 Mark F. Mosser
- 👤 William J. Fabiny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:15
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; C04; C04B; C04B28/00; C04B28/34; C04B28/342; C04B28/346; C09; C09D; C09D5/00; C09D5/08; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00525; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/2933; Y10T428/2936; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
48 words
A part coated with a cured coating composition which comprises (a) an acid binder aqueous solution which comprises phosphate ions and ions of the group of chromate ions or molybdate ions, (b) an acid-stable amorphous silica, and (c) a non-ionic surfactant, said silica being crosslinked with said surfactant.
Claim 2
Dependent Claim
48 words
A part coated with a cured coating composition which comprises (a) an acid binder aqueous solution which comprises phosphate ions and ions of the group of chromate ions or molybdate ions, (b) an acid-stable amorphous silica, and (c) a non-ionic surfactant, said silica being crosslinked with said surfactant.
Claim 3
Dependent Claim
10 words
The part of claim 1 which is a metal part.
Claim 4
Dependent Claim
8 words
The spin coated metal part of claim 2.
Claim 5
Dependent Claim
26 words
The spin coated metal part of claim 3, which metal part has a convoluted shape, or grooves or comprises at least two closely fitting separable portions.
Claim 6
Dependent Claim
24 words
The spin coated metal part of claim 4, which metal part is a fastener, screw, spring, coil, bolt, nut, washer, valve clip or wire.
Claim 7
Dependent Claim
19 words
The part of claim 1 wherein the amorphous silica is of said composition and is free of stabilizing ions.
Claim 8
Dependent Claim
15 words
The part of claim 1, wherein the amorphous silica of said composition was fumed silica.
Claim 9
Dependent Claim
40 words
The part of claim 1 wherein the amorphous silica of said composition is an aggregate or agglomerate of a size of about 1 to about 5 microns of particles of an average particle size of less than about 1 micron.
Claim 10
Dependent Claim
9 words
The part of claim 1 which is heat cured.
References Cited (Backward Citations)
US4537632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |