US3637513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleansing agent composition
Assignee: Alpha Metals Ltd
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Filing: 1969-10-23
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Granted: 1972-01-25
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Expires: 1989-10-23
Abstract
Abstract A cleansing agent for removing polar and nonpolar soils from electrical packages which is suitably active on both polar and nonpolar soils, is nonflammable, has a narrow boiling range of 113* -121* C., and includes the azeotrope of 2-ethoxyethanol and tetrachloroethylene, with an excess of the latter of approximately 15 to 70 percent by weight.
Inventors
- 👤 Alvin F Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:54
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02806; C11; C11D; C11D7/00; C11D7/50; C11D7/5004; C11D7/5018; C11D7/5036; C11D7/5068; C11D7/5077; C11D7/5086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A cleansing agent composition for removing polar and nonpolar soils from electronic packages according to claim 1 in which the composition has a boiling range of 113* C. to 121* C.
Claim 2
Dependent Claim
43 words
A cleansing agent composition for removing polar and nonpolar soils from electronic packages consisting essentially of by weight a. 5-14 percent 2-ethoxy ethanol; b. 86-95 percent tetrachloroethylene; c. wherein 30.3-84.8 percent is the azeotrope; and d. wherein 15.02-69.7 percent is the excess tetrachloroethylene.
References Cited (Backward Citations)
US2748084A
Cited
US3419407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |