US5304818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead frame
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1992-07-24
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Granted: 1994-04-19
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Expires: 2012-07-24
Abstract
Abstract A lead frame, used for constructing a multi-core optical module or the like, includes a frame portion, a plurality of substrate portions on which electronic circuit elements are to be mounted, and a support portion for securing the plurality of substrate portions to the frame portion. The support portion has a plurality of separated end portions connected to the respective substrate portions at the position where a molded resin member is covered, and at least two of the plurality of end portions are combined into one body to be connected to the frame portion at the point where the molded resin member is not covered.
Inventors
- 👤 Hisao Go
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:40
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; H; H10; H10W; H10W72/00; G02B6/4251; G02B6/4253; G02B6/4255; H10W70/00; H10W70/40; H10W70/421; H10W70/433; G02B6/4246
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A lead frame used as a component in a multi-core module having optical connectors and electronic circuit elements, said lead frame comprising: a frame portion; a plurality of substrate portions on which said electronic circuit elements are to be mounted; and at least one support portion disposed between said optical connectors for securing said plurality of substrate portions to said frame portion, said support portion having a plurality of separated end portions connected to said respective substrate portions in a manner that secures said substrate portions in place, at least two of said separated end portions combining into one body, said one body being directly connected to said frame portion, and said support portion for sufficiently insulating said plurality of substrate portions from one another upon trimming said separated end portions after molding of said lead frame, wherein said lead frame is an integral component for producing said multi-core optical module, in which said lead frame, optical connectors and optical operation elements are integrally molded into one body with a mold resin material.
Claim 2
Dependent Claim
173 words
A lead frame used as a component in a multi-core module having optical connectors and electronic circuit elements, said lead frame comprising: a frame portion; a plurality of substrate portions on which said electronic circuit elements are to be mounted; and at least one support portion disposed between said optical connectors for securing said plurality of substrate portions to said frame portion, said support portion having a plurality of separated end portions connected to said respective substrate portions in a manner that secures said substrate portions in place, at least two of said separated end portions combining into one body, said one body being directly connected to said frame portion, and said support portion for sufficiently insulating said plurality of substrate portions from one another upon trimming said separated end portions after molding of said lead frame, wherein said lead frame is an integral component for producing said multi-core optical module, in which said lead frame, optical connectors and optical operation elements are integrally molded into one body with a mold resin material.
Claim 3
Dependent Claim
32 words
A lead frame as claimed in claim 1, wherein said support portion includes a stress absorbing portion for preventing deformation of said lead frame during a molding process of said lead frame.
Claim 4
Dependent Claim
34 words
A lead frame as claimed in claim 1, wherein said frame portion includes at least one stress absorbing portion for preventing deformation of said lead frame during a molding process of said lead frame.
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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) | 1997-04-18 | 1997-10-18 | 1998-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-18 | 2001-10-18 | 2002-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-18 | 2005-10-18 | 2006-04-19 | $7700.00 | Window Closed / Lapsed |