US5298083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dissolving contaminants from substrates by using hydrofluorocarbon solvents having a portion which is fluorocarbon and the remaining portion is hydrocarbon
Assignee: Honeywell International Inc
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Filing: 1993-07-28
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Granted: 1994-03-29
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Expires: 2013-07-28
Abstract
Abstract The present invention provides hydrofluorocarbon solvents having a portion which is fluorocarbon and the remaining portion is hydrocarbon and having 4 to 7 carbon atoms. The solvents are useful for dissolving contaminants or removing contaminants from the surface of a substrate.
Inventors
- 👤 Michael Van Der Puy
- 👤 Phillip J. Persichini
- 👤 Andrew J. Poss
- 👤 Lois A. Shorts
- 👤 Richard E. Eibeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:46
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02803; C11; C11D; C11D7/00; C11D7/50; C11D7/5004; C11D7/5018
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
40 words
A method of dissolving or removing contaminants from the surface of a substrate which comprises the step of: exposing said substrate to a hydrofluorocarbon of the formula ##STR4## wherein p is 1,2, or 3 and r is 1,2, or 3.
Claim 2
Independent Claim
40 words
A method of dissolving or removing contaminants from the surface of a substrate which comprises the step of: exposing said substrate to a hydrofluorocarbon of the formula ##STR4## wherein p is 1,2, or 3 and r is 1,2, or 3.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said method dissolves or removes organic contaminants.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein said method dissolves or removes hydrocarbon contaminants.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein said method dissolves or removes fluorocarbon contaminants.
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) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |