Patent US5397383A successfully refreshed from Google Patents.
US5397383A
Expired / Lapsed
US
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Organic vehicle for electronic composition
Assignee: EIDP Inc
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Filing: 1994-02-25
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Granted: 1995-03-14
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Expires: 2014-02-25
Abstract
Abstract An electronic paste composition is disclosed which contains inorganic particles and a liquid vehicle.
Inventors
- 👤 Lech Wilczek
- 👤 James W. O'Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:39
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/02; B23K35/0222; B23K35/0244; B23K35/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
193 words
A composition suitable for attaching a metallic lead of electronic component to a metallization on a printed wiring board, wherein at least the lead or the printed wiring board metallization is precoated with solder, the composition comprising: a liquid formulation of a) at least one compound having a molecular weight of about 200 to about 500 of the structure, ##STR13## or the structure, ##STR14## or the structure, ##STR15## or the structure, ##STR16## where R 1 through R 8 , are independently selected from the group consisting of hydrogen, phenyl, alkyl groups containing 1 to 10 carbon atoms, and cycloalkyl groups containing 5 to 10 carbon atoms, with the proviso that at least one of R 1 and R 2 is different than hydrogen and at least one of R 3 and R 4 is hydrogen; X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 , are independently selected from the group consisting of hydrogen, phenyl, alkyl, cycloalkyl, acyl, alkoxyl, carboxyl, carboxyl ester, and hydroxyl; and wherein said group each contains 10 or fewer carbon atoms; and n is 1 or 2; and b) an activator.
Claim 2
Dependent Claim
193 words
A composition suitable for attaching a metallic lead of electronic component to a metallization on a printed wiring board, wherein at least the lead or the printed wiring board metallization is precoated with solder, the composition comprising: a liquid formulation of a) at least one compound having a molecular weight of about 200 to about 500 of the structure, ##STR13## or the structure, ##STR14## or the structure, ##STR15## or the structure, ##STR16## where R 1 through R 8 , are independently selected from the group consisting of hydrogen, phenyl, alkyl groups containing 1 to 10 carbon atoms, and cycloalkyl groups containing 5 to 10 carbon atoms, with the proviso that at least one of R 1 and R 2 is different than hydrogen and at least one of R 3 and R 4 is hydrogen; X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 , are independently selected from the group consisting of hydrogen, phenyl, alkyl, cycloalkyl, acyl, alkoxyl, carboxyl, carboxyl ester, and hydroxyl; and wherein said group each contains 10 or fewer carbon atoms; and n is 1 or 2; and b) an activator.
Claim 3
Dependent Claim
10 words
The composition of claim 1 further comprising: c) a solvent.
Claim 4
Dependent Claim
142 words
The composition of claim 1 wherein the formulation comprises at least one compound of structure I wherein R 1 , R 5 , and R 8 are methyl and R 6 and R 7 are hydrogen when n is 1; and, R 1 , R 2 , R 5 , and R 8 are methyl and R 3 , R 4 , R 6 , and R 7 are hydrogen when n is 2; and, One of X 1 through X 5 , One of Y 1 through Y 5 , and one of Z 1 through Z 5 are selected from the group consisting of alkyl and acyl wherein said substituents each contains 5 or fewer carbon atoms, and the remainder of X 1 through X 5 , Y 1 through Y 5 and Z 1 through Z 5 are hydrogen.
Claim 5
Dependent Claim
63 words
The composition of claim 3 wherein one of X 1 through X 5 , One of Y 1 through Y 5 , and one of Z 1 through Z 5 are selected from the group consisting of acetyl and t-butyl, and the remainder of X 1 through X 5 , Y 1 through Y 5 and Z 1 through Z 5 are hydrogen.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |