US4530776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning composition for wax removal
Assignee: Daikin Industries Ltd
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Filing: 1984-02-23
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Granted: 1985-07-23
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Expires: 2004-02-23
Abstract
Abstract A cleaning composition comprising (a) a halogenated and/or non-halogenated hydrocarbon, (b) a fluorinated alcohol, and optionally (c) a polar organic solvent other than the components (a) and (b), the composition being useful for removing waxes, which are used for temporarily fixing objects to be polished in the electronics or optical industry to a support, from the surfaces of the objects after the detachment from the support.
Inventors
- 👤 Iwao Hisamoto
- 👤 Yukio Omure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:42
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D3/00; C11D3/50; C09; C09D; C09D9/00; C09D9/005; C11D7/5004; C11D7/5018; C11D7/5036; C11D7/504; C11D7/5063; C11D7/22; C11D7/24; C11D7/26; C11D7/263; C11D7/264; C11D7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A cleaning composition comprising tetrachlorodifluoroethane, 2,2,3,3-tetrafluoropropyl alcohol and nitromethane in a ratio of 80:13.3:6.7 by weight.
Claim 2
Dependent Claim
16 words
A cleaning composition comprising tetrachlorodifluoroethane, 2,2,3,3-tetrafluoropropyl alcohol and nitromethane in a ratio of 80:13.3:6.7 by weight.
References Cited (Backward Citations)
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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) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |