US5612403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature flexible die attach adhesive and articles using same
Assignee: Henkel Corp
•
Filing: 1995-10-16
•
Granted: 1997-03-18
•
Expires: 2015-10-16
Abstract
Abstract Described is a flexible adhesive formulation for bonding a semiconductor device to a flexible substrate and a flexible card containing a semiconductor device which can be processed in a computer.
Inventors
- 👤 My N. Nguyen
- 👤 Yuan Y. Chien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:32
CPC Classifications
C; C07; C07C; C07C261/00; C07C261/02; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08K; C08K5/00; C08K5/0008; C08K5/0016; C09; C09J; C09J179/00; C09J179/04; G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/07745; H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H10; H10W; H10W20/00; H10W20/40; H10W40/00; H10W40/20; H10W40/25; H10W40/251; H10W70/00; H10W70/60; H10W70/699; H10W72/00; H10W72/071; H10W72/073; H10W72/07331; H10W72/07337; H10W72/30; H10W72/321; H10W72/325; H10W72/351; H10W72/352; H10W72/353; H10W72/354
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A die attach adhesive composition capable of being cured in less than five minutes at 200° C. comprising: about 10 to about 40 weight percent resin vehicle comprising cyanate ester monomers and at least one flexibilizer; about 60 to about 90 weight percent silver; and wherein said composition is free of added metal containing catalysts or added alkylphenol.
Claim 2
Dependent Claim
58 words
A die attach adhesive composition capable of being cured in less than five minutes at 200° C. comprising: about 10 to about 40 weight percent resin vehicle comprising cyanate ester monomers and at least one flexibilizer; about 60 to about 90 weight percent silver; and wherein said composition is free of added metal containing catalysts or added alkylphenol.
Claim 3
Dependent Claim
67 words
A die attach adhesive composition capable of being cured in less than five minutes at 200° C. comprising: about 10 to about 40 weight percent resin vehicle comprising cyanate ester monomers and at least one flexibilizer; about 60 to about 90 weight percent silver; about 0.1 to about 0.6 weight percent metal containing curing catalyst; and wherein said composition is free of added alkylphenol or added solvent.
Claim 4
Dependent Claim
67 words
A die attach adhesive composition capable of being cured in less than five minutes at 200° C. comprising: about 10 to about 40 weight percent resin vehicle comprising cyanate ester monomers and at least one flexibilizer; about 60 to about 90 weight percent silver; about 0.1 to about 0.6 weight percent metal containing curing catalyst; and wherein said composition is free of added alkylphenol or added solvent.
Claim 5
Dependent Claim
66 words
A die attach adhesive composition capable of being cured in less than five minutes at 200° C. comprising: about 10 to about 40 weight percent resin vehicle comprising cyanate ester monomers and at least one flexibilizer; about 60 to about 90 weight percent silver; and about 0.5 to about 2 weight percent added alkylphenol; and wherein said composition is free of added metal containing curing catalyst.
Claim 6
Dependent Claim
66 words
A die attach adhesive composition capable of being cured in less than five minutes at 200° C. comprising: about 10 to about 40 weight percent resin vehicle comprising cyanate ester monomers and at least one flexibilizer; about 60 to about 90 weight percent silver; and about 0.5 to about 2 weight percent added alkylphenol; and wherein said composition is free of added metal containing curing catalyst.
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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) | 2000-03-17 | 2000-09-16 | 2001-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-17 | 2004-09-16 | 2005-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-17 | 2008-09-16 | 2009-03-18 | $7700.00 | Window Closed / Lapsed |