US4533975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation hardenable coating and electronic components coated therewith
Assignee: Philips North America LLC
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Filing: 1983-12-27
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Granted: 1985-08-06
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Expires: 2003-12-27
Abstract
Abstract An ultraviolet curable coating composition particularly adapted for providing water impermeable abrasive resistant coatings on low temperature degradable electronic components comprising a liquid mixture of an acrylated cresol novolac epoxy oligomer, a multifunctional acrylated urethane oligomer, a hydroxyalkyl methacrylate monomer, a bicyclic monofunctional acrylate monomer, a photoinitiator and a calcined cobalt alumina pigment.
Inventors
- 👤 Jacob C. Bill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:11
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/12; C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08F299/024; H05; H05K; H05K7/00; H05K7/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
An ultraviolet radiation curable liquid coating composition particularly adapted for providing a low temperature degradable electronic component with a protective coating, said composition comprising a liquid mixture of an acrylated epoxy oligomer, an acrylated urethane oligomer, a hydroxyalkyl methacrylate monomer, an aliphatic bicyclic monofunctional monomer, a calcined cobalt alumina pigment and at least one U.V. free radical initiator and one thermal free radical initiator.
Claim 2
Dependent Claim
64 words
An ultraviolet radiation curable liquid coating composition particularly adapted for providing a low temperature degradable electronic component with a protective coating, said composition comprising a liquid mixture of an acrylated epoxy oligomer, an acrylated urethane oligomer, a hydroxyalkyl methacrylate monomer, an aliphatic bicyclic monofunctional monomer, a calcined cobalt alumina pigment and at least one U.V. free radical initiator and one thermal free radical initiator.
Claim 3
Dependent Claim
15 words
The liquid coating composition of claim 1, wherein in addition an antifoaming agent is present.
Claim 4
Dependent Claim
17 words
An electronic component having an ultraviolet radiation cured coating formed from the coating composition of claim 1.
Claim 5
Dependent Claim
17 words
An electronic component having an ultraviolet radiation cured coating formed from the coating composition of claim 2.
Claim 6
Dependent Claim
17 words
A film capacitor having an ultraviolet radiation cured coating formed from the coating composition of claim 2.
Claim 7
Dependent Claim
20 words
An axial leaded polystyrene film capacitor having an ultraviolet radiation cured coating formed from the coating composition of claim 1.
Claim 8
Dependent Claim
20 words
An axial leaded polystyrene film capacitor having an ultraviolet radiation cured coating formed from the coating composition of claim 2.
References Cited (Backward Citations)
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Cited
US3915824A
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US4040925A
Cited
US4122211A
Cited
US4143013A
Cited
US4282269A
Cited
US4457766A
Cited
US4416750A
Cited
US4414173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |