Patent US3751970A successfully refreshed from Google Patents.
US3751970A
Expired / Lapsed
US
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Inspection penetrant process and composition for aiding removal of excess penetrant from test part surfaces
Assignee: Individual
•
Filing: 1972-02-09
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Granted: 1973-08-14
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Expires: 1992-02-09
Abstract
Abstract Oil and/or water compatible gel or emulsion forming compositions are disclosed for use in treating test parts in an inspection penetrant process. Following treatment of test parts such as, for example, jet engine turbine buckets, with a fluorescent penetrant, it is desired to remove excess penetrant from the surface of said test parts without leaving smears and spots of blotchy fluorescent residues thereon. Such removal may be accomplished effectively using a composition comprising, for example, dimethyl formamide, methylene chloride, mineral thinner and ethylene glycol monobutyl ether.
Inventors
- 👤 J Alburger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:06
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/91; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
36 words
A process in accordance with claim 1 in which said surfactant constituent is dimethyl formamide, said synergist constituent is methylene chloride, said oil constituent is mineral thinner, and said coupler constituent is ethylene glycol monobutyl ether.
Claim 2
Dependent Claim
32 words
A process in accordance with claim 1 in which said surfactant constituent is dimethyl formamide, said synergist constituent is benzene, said oil constituent is mineral thinner, and said coupler constituent is isopropanol.
Claim 3
Dependent Claim
35 words
A process in accordance with claim 1 in which said surfactant constituents is N-methyl pyrrolidone, said synergist constituent is 1.1.1-trichloroethane, said oil constituent is mineral thinner, and said coupler constituent is ethylene glycol monobutyl ether.
Claim 4
Dependent Claim
35 words
A process in accordance with claim 1 in which said surfactant constituent is diethylene glycol, said synergist constituent is perchloroethylene, said oil constituent is mineral thinner, and said coupler constituent is ethylene glycol monobutyl ether.
Claim 5
Dependent Claim
36 words
A process in accordance with claim 1 in which said surfactant constituent is diethylene glycol, said synergist constituent is dioctyl phthalate, said oil constituent is mineral oil, and said coupler constituent is diethylene glycol monobutyl ether.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |