US4173665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rustproofing motor vehicles
Assignee: Individual
•
Filing: 1978-04-13
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Granted: 1979-11-06
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Expires: 1998-04-13
Abstract
Abstract An improved rustproofing composition for application to metal panels of motor vehicle bodies for prevention of rust and corrosion of same, comprising polychloroprene polymer latex solids dispersed in an aqueous medium, surface active agents, pigments, freeze point reduction agents, rheological control agents, bacteriostatic agents, pH-control agents, and corrosion inhibitors.
Inventors
- 👤 Roy J. Nida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:13
CPC Classifications
C; C09; C09D; C09D111/00; C08; C08K; C08K3/00; C08K3/01; C08K3/013; C08L; C08L1/00; C08L1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
An improved method of rustproofing a motor vehicle comprising: applying a rustproofing composition to the metal panels of the motor vehicle bodies for preventing corrosion of same, said improved rustproofing composition comprising a substantially uniform dispersion of: at least approximately twenty (20) percent polychloroprene polymer latex solids dispersed in an aqueous medium; at least approximately one (1) percent of at least one surface active agent selected from the group of antifoam and wetting agents; and at least approximately twenty (20) percent of pigment solids.
Claim 2
Dependent Claim
84 words
An improved method of rustproofing a motor vehicle comprising: applying a rustproofing composition to the metal panels of the motor vehicle bodies for preventing corrosion of same, said improved rustproofing composition comprising a substantially uniform dispersion of: at least approximately twenty (20) percent polychloroprene polymer latex solids dispersed in an aqueous medium; at least approximately one (1) percent of at least one surface active agent selected from the group of antifoam and wetting agents; and at least approximately twenty (20) percent of pigment solids.
Claim 3
Dependent Claim
23 words
The improved rustproofing method of claim 1 wherein said rustproofing composition further includes approximately two (2) percent of a freeze point reduction agent.
Claim 4
Dependent Claim
25 words
The improved rustprooffing method of claim 2 wherein said freeze point reduction agent is selected from the group consisting of ethylene glycol and propylene glycol.
Claim 5
Dependent Claim
21 words
The improved rustproofing method of claim 1 wherein said rustproofing composition further includes approximately 0.15 percent of rheological control agent solids.
Claim 6
Dependent Claim
16 words
The improved rustproofing composition of claim 4 wherein said rheological control agent solids comprise ethyl cellulose.
Claim 7
Dependent Claim
21 words
The improved rustproofing method of claim 1 wherein said rustproofing composition further includes approximately 0.05 percent of a bacteriostatic agent solution.
Claim 8
Dependent Claim
21 words
The improved rustproofing method of claim 1 wherein said rustproofing composition further includes approximately 0.02 percent of a pH control agent.
Claim 9
Dependent Claim
15 words
The improved rustproofing composition of claim 7 wherein said pH control agent is ammonium hydroxide.
Claim 10
Dependent Claim
22 words
The improved rustproofing method of claim 1 wherein said pigment solids are at least one of carbon black, silica, and zinc oxide.
Claim 11
Dependent Claim
31 words
The improved rustproofing method of claim 1 further including at least one (1) percent of a corrosion inhibitor selected from the group consisting of sodium nitrate, sodium benzoate and zinc chromate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |