Patent EP0991006A2 successfully refreshed from Google Patents.
US5049201A
Expired / Lapsed
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Method of inhibiting corrosion in an electronic package
Assignee: International Business Machines Corp
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Filing: 1989-06-22
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Granted: 1991-09-17
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Expires: 2009-06-22
Abstract
Abstract Disclosed is a method of inhibiting corrosion on an electronic component. The method includes the steps of obtaining an electronic component and then cleaning the electronic component in a solution consisting of a complexing agent and a solvent in which the complexing agent is soluble. The complexing agent is a crown compound.
Inventors
- 👤 Shirley Cheng
- 👤 Constance J. Araps
- 👤 Allen J. Arnold
- 👤 Jeffrey T. Coffin
- 👤 Luu T. Nguyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:24
CPC Classifications
H; H10; H10P; H10P70/00; H10P70/10; H10P70/15; C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/14; C23F15/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
57 words
A method of inhibiting corrosion on an electronic component, comprising the steps of: a. obtaining an electronic component; and b. cleaning said electronic component in a solution comprising a crown compound complexing agent and a solvent in which said complexing agent is soluble; wherein said method inhibits corrosion of an electronic component after removal from said solution.
Claim 2
Independent Claim
57 words
A method of inhibiting corrosion on an electronic component, comprising the steps of: a. obtaining an electronic component; and b. cleaning said electronic component in a solution comprising a crown compound complexing agent and a solvent in which said complexing agent is soluble; wherein said method inhibits corrosion of an electronic component after removal from said solution.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein said complexing agent is added in a small but effective amount to complex with substantially all free ionic contaminants present.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein said solvent is selected from the group consisting of acetonitrile, xylene, toluene, hexane, benzene, tetrahydrofuran, glyme, diglyme, ethanol, water, methylamine, diethyl ether, and methanol and mixtures thereof.
Claim 5
Dependent Claim
10 words
The method of claim 3 wherein said solvent is xylene.
Claim 6
Dependent Claim
10 words
The method of claim 3 wherein said solvent is tetrahydrofuran.
Claim 7
Dependent Claim
10 words
The method of claim 3 wherein said solvent is water.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein said crown compound complexing agent is selected from the group consisting of crown ethers, cryptate ethers and mixtures thereof.
Claim 9
Dependent Claim
15 words
The method of claim 7 wherein said cryptate ether is a monocyclic or multicyclic cryptate.
Claim 10
Dependent Claim
13 words
The method of claim 8 wherein said cryptate ether is a multicyclic cryptate.
Claim 11
Dependent Claim
19 words
The method of claim 7 wherein said crown ether is an alicyclic crown ether or an aromatic crown ether.
Claim 12
Dependent Claim
14 words
The method of claim 10 wherein said crown ether is an alicyclic crown ether.
Claim 13
Dependent Claim
18 words
The method of claim 11 wherein said crown ether is dicyclohexyl 18 - crown - 6 crown ether.
Claim 14
Dependent Claim
13 words
The method of claim 1 wherein said electronic component is a semiconductor chip.
Claim 15
Dependent Claim
13 words
The method of claim 1 wherein said electronic component is an integrated circuit.
Claim 16
Dependent Claim
13 words
The method of claim 1 wherein said electronic component is a ceramic substrate.
Claim 17
Dependent Claim
13 words
The method of claim 1 wherein said electronic component is a glass/ceramic substrate.
Claim 18
Dependent Claim
13 words
The method of claim 1 wherein said electronic component is a glass substrate.
Claim 19
Dependent Claim
15 words
The method of claim 1 wherein said electronic component is covered with a moisture-resistant material.
Claim 20
Dependent Claim
15 words
The method of claim 18 wherein said moistureresistant material comprises a crown compound complexing agent.
Claim 21
Dependent Claim
24 words
The method of claim 19 wherein said crown compound complexing-agent is selected from the group consisting of crown ethers, cyptate ethers and mixtures thereof.
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) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |