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Class Information
Number: 257/E23.026
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Packaging, interconnects, and markings for semiconductor or other solid-state devices (epo) > Arrangements for conducting electric current to or from solid-state body in operation, e.g., leads, terminal arrangements (epo) > Consisting of soldered or bonded constructions (epo) > Bases or plates or solder therefor (epo)
Description: This subclass is indented under subclass E23.023. This subclass is substantially the same in scope as ECLA classification H01L23/492.


Sub-classes under this class:

Class Number Class Name Patents
257/E23.028 Characterized by material (epo) 66
257/E23.027 Having heterogeneous or anisotropic structure (epo) 37


Patents under this class:
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Patent Number Title Of Patent Date Issued
7601612 Method for forming solder joints for a flip chip assembly Oct. 13, 2009
7595553 Packaging board and manufacturing method therefor, semiconductor module and mobile apparatus Sep. 29, 2009
7569920 Electronic component having at least one vertical semiconductor power transistor Aug. 4, 2009
7554172 Multi-directional multiplexing radius convergence electrode Jun. 30, 2009
7550845 Ball grid array package with separated stiffener layer Jun. 23, 2009
7492043 Power module flip chip package Feb. 17, 2009
7414319 Semiconductor chip assembly with metal containment wall and solder terminal Aug. 19, 2008
7411297 Microfeature devices and methods for manufacturing microfeature devices Aug. 12, 2008
7388293 Interposer method of fabricating same, and semiconductor device using the same having two portions with different constructions Jun. 17, 2008
7338891 Semiconductor chip, mounting structure thereof, and methods for forming a semiconductor chip and printed circuit board for the mounting structure thereof Mar. 4, 2008
7298039 Electronic circuit device Nov. 20, 2007
7298049 Submount for mounting semiconductor device Nov. 20, 2007
7242085 Semiconductor device including a semiconductor chip mounted on a metal base Jul. 10, 2007
7170183 Wafer level stacked package Jan. 30, 2007
7053299 Flange for integrated circuit package May. 30, 2006
7038917 Low loss, high density array interconnection May. 2, 2006
7030496 Semiconductor device having aluminum and metal electrodes and method for manufacturing the same Apr. 18, 2006
7030476 Rectifier diode device Apr. 18, 2006
7002244 Semiconductor device Feb. 21, 2006
6992384 High performance multi-chip flip chip package Jan. 31, 2006
6984883 Semiconductor power module Jan. 10, 2006
6958530 Rectification chip terminal structure Oct. 25, 2005
6930397 Surface mounted package with die bottom spaced from support board Aug. 16, 2005
6927479 Method of manufacturing a semiconductor package for a die larger than a die pad Aug. 9, 2005
6894377 Rectification chip terminal structure May. 17, 2005
6882040 Semiconductor device Apr. 19, 2005
6882057 Quad flat no-lead chip carrier Apr. 19, 2005
6879033 Semiconductor device Apr. 12, 2005
6873039 Methods of making microelectronic packages including electrically and/or thermally conductive element Mar. 29, 2005
6867367 Package for integrated circuit die Mar. 15, 2005
6864579 Carrier with a metal area and at least one chip configured on the metal area Mar. 8, 2005
6853066 Semiconductor device Feb. 8, 2005
6836023 Structure of integrated trace of chip package Dec. 28, 2004
6835580 Direct chip attach structure and method Dec. 28, 2004
6813154 Reversible heat sink packaging assembly for an integrated circuit Nov. 2, 2004
6812553 Electrically isolated and thermally conductive double-sided pre-packaged component Nov. 2, 2004
6784540 Semiconductor device package with improved cooling Aug. 31, 2004
6740969 Electronic device May. 25, 2004
6734044 Multiple leadframe laminated IC package May. 11, 2004
6696321 High performance multi-chip flip chip package Feb. 24, 2004
6627991 High performance multi-chip flip package Sep. 30, 2003
6593527 Integrated circuit assembly with bar bond attachment Jul. 15, 2003
6489678 High performance multi-chip flip chip package Dec. 3, 2002
6462413 LDMOS transistor heatsink package assembly and manufacturing method Oct. 8, 2002
6294403 High performance flip chip package Sep. 25, 2001
6254423 Power diode terminal holder mounting arrangement Jul. 3, 2001
6133634 High performance flip chip package Oct. 17, 2000
5736786 Power module with silicon dice oriented for improved reliability Apr. 7, 1998
5639990 Solid printed substrate and electronic circuit package using the same Jun. 17, 1997
5424579 Semiconductor device having low floating inductance Jun. 13, 1995

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