Patent US5707947A successfully refreshed from Google Patents.
US5707947A
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Organic stripping composition
Assignee: Air Products and Chemicals Inc
•
Filing: 1996-07-23
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Granted: 1998-01-13
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Expires: 2016-07-23
Abstract
Abstract Organic stripping composition for photoresists comprising organic polar solvents and basic amines which includes an inhibitor which forms a coordination complex with a metal.
Inventors
- 👤 Irl E. Ward
- 👤 Francis W. Michelotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:33
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/42; G03F7/422; G03F7/425; C; C09; C09D; C09D9/00; C09D9/005; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23G; C23G1/00; C23G1/14; C23G1/16; C23G1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
In an aqueous stripping composition for removing coatings from a substrate wherein said stripping composition consists of stripping effective amounts of more than about 50 wt % up to about 98 wt % organic polar solvent, up to about 20 wt % water, and a basic amine, the improvement wherein said composition is an admixture which further consists of an effective inhibiting amount a compound of the formula: ##STR6## wherein G is hydrogen and A and B are hydroxyl, and said polar solvent and said basic amine are different.
Claim 2
Dependent Claim
89 words
In an aqueous stripping composition for removing coatings from a substrate wherein said stripping composition consists of stripping effective amounts of more than about 50 wt % up to about 98 wt % organic polar solvent, up to about 20 wt % water, and a basic amine, the improvement wherein said composition is an admixture which further consists of an effective inhibiting amount a compound of the formula: ##STR6## wherein G is hydrogen and A and B are hydroxyl, and said polar solvent and said basic amine are different.
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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) | 2001-01-12 | 2001-07-14 | 2002-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-12 | 2005-07-14 | 2006-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-12 | 2009-07-14 | 2010-01-13 | $7700.00 | Window Closed / Lapsed |