US4849048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing electric and electronic parts
Assignee: Aisin Corp
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Filing: 1987-06-10
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Granted: 1989-07-18
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Expires: 2007-06-10
Abstract
Abstract A method of sealing electric and electonic parts, comprising employing two different ultraviolet-curing resins for upper and lower layer portions, respectively, the resin employed for the upper layer portion having a smaller specific gravity than that of the resin for the lower layer portion before the resins are cured, and simultaneously curing the resins by irradiation with an ultraviolet ray. The ultraviolet-curing resin employed for the upper layer portion is an epoxy acrylate or epoxy resin, while an urethane acrylate ultraviolet-curing resin is employed for the lower layer portion, and the thickness of the ultraviolet-curing resin employed for the upper layer portion is set at from 0.5 mm to 3 mm.
Inventors
- 👤 Akio Inagaki
- 👤 Kiyotaka Nakai
- 👤 Hitoshi Tauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:26
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/02; B29C39/10; B29C35/00; B29C35/02; B29C35/08; B29C39/12; B29C39/123; B29C70/00; B29C70/68; B29C70/74; H; H01; H01H; H01H9/00; H01H9/02; H01H9/04; B29C35/0805; B29C2035/0827; B29K; B29K2063/00; B29K2075/00; B29L; B29L2031/00; B29L2031/34; B29L2031/3406; H01H11/00; H01H2011/0081; H01H36/00; H01H36/0006; H01H36/0033; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146; Y10T29/49169; Y10T29/49171; Y10T29/49172
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A method of sealing an electronic part within a casing, comprising: positioning said electronic part within said casing; introducing two different ultraviolet-curing resins within said casing so as to form first and second layer portions, respectively, the resin employed for the first layer portion having a smaller specific gravity than that of the resin for the second layer portion before said resins are cured; and simultaneously curing said resins by irradiation with an ultraviolet ray so as to seal said electronic part within said casing.
Claim 2
Independent Claim
85 words
A method of sealing an electronic part within a casing, comprising: positioning said electronic part within said casing; introducing two different ultraviolet-curing resins within said casing so as to form first and second layer portions, respectively, the resin employed for the first layer portion having a smaller specific gravity than that of the resin for the second layer portion before said resins are cured; and simultaneously curing said resins by irradiation with an ultraviolet ray so as to seal said electronic part within said casing.
Claim 3
Dependent Claim
35 words
A method of sealing an electronic part according to claim 1, wherein said ultraviolet-curing resin of said first layer portion comprises an epoxy acrylate, while said second layer portion comprises an urethane acrylate ultraviolet-curing resin.
Claim 4
Dependent Claim
30 words
A method of sealing an electronic part according to claim 1, wherein the thickness of said ultraviolet-curing resin of the first layer portion is from 0.5 mm to 3 mm.
Claim 5
Dependent Claim
35 words
A method of sealing an electronic part according to claim 1, wherein said ultraviolet-curing resin of said first layer portion comprises an epoxy resin, while said second layer portion comprises a urethane acrylate ultraviolet-curing resin.
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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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |