US3743542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint removing method
Assignee: Chemed Corp
•
Filing: 1971-05-28
•
Granted: 1973-07-03
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Expires: 1991-05-28
Abstract
Abstract A method for removing paint from metal surfaces by boiling a solvent or solvent mixture and contacting the painted metal surface with the vapors of the solvent mixture.
Inventors
- 👤 J Cooper
- 👤 W Corbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:15
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/22; C11D7/26; C11D7/261; C09; C09D; C09D9/00; C09D9/005; C11D3/00; C11D3/43; C11D7/50; C11D7/5004; C11D7/5009; C11D7/5013; C11D7/5018; C11D7/5022; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/16; C11D7/24; C11D7/263; C11D7/265; C11D7/28; C11D7/32; C11D7/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
25 words
The method of claim 1 wherein the volatile solvent is formed of 33 parts by weight each of perchloroethylene, ethylene glycol methyl ether and morpholine.
Claim 2
Dependent Claim
25 words
The method of claim 1 wherein the volatile solvent is formed of 10 parts by weight of morpholine and 90 parts by weight of orthodichlorobenzene.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein the volatile solvent is formed of 10 parts by weight of morpholine and 90 parts by weight of ethoxytriglycol.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein the volatile solvent is formed of 90 parts by weight of perchloroethylene and 10 parts by weight of morpholine.
Claim 5
Independent Claim
94 words
A method for removing paint from a metal surface which method comprises, heating a volatile paint solvent to boiling, contacting the painted metal surface with vapors of the heated paint solvent, and thereafter removing at least a substantial amount of paint from the metal surface, said volatile paint solvent formed of a mixture of 50 parts by weight of a component selected from the group consisting of morpholine, methylene chloride, and perchlorethylene; and 50 parts by weight of a second component selected from the group consisting of tetrahydronaphthalene, ethylene glycol methyl ether, and ethyoxytriglycol.
Claim 6
Dependent Claim
23 words
The method of claim 6 wherein the volatile solvent is formed of 50 parts by weight morpholine and 50 parts by weight tetrahydronaphthalene.
Claim 7
Dependent Claim
26 words
The method of claim 6 wherein the volatile solvent is formed of 50 parts by weight of methylene chloride and 50 parts by weight of tetrahydronaphthalene.
Claim 8
Dependent Claim
28 words
The method of claim 6 wherein the volatile solvent is formed of 50 parts by weight of perchloroethylene and 50 parts by weight of ethylene glycol methyl ether.
Claim 9
Dependent Claim
25 words
The method of claim 6 wherein the volatile solvent is formed of 50 parts by weight of perchloroethylene and 50 parts by weight of ethoxytriglycol.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |