U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Heat sink assembly for solid state devices

Patent 5313099 Issued on May 17, 1994. Estimated Expiration Date: Icon_subject March 4, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2432513

2916159

2958515

3033537

3146384

3182114

3229756

3417300

Heat dissipator for integrated circuit chips
Patent #: 4481525
Issued on: 11/06/1984
Inventor: Calabro ,   et al.

Diamond heatsink assemblies
Patent #: 4576224
Issued on: 03/18/1986
Inventor: Eaton ,   et al.

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Inventors

Assignee

Application

No. 026515 filed on 03/04/1993

US Classes:

257/717, Isolation of cooling means (e.g., heat sink) by an electrically insulating element (e.g., spacer)257/706, With heat sink257/718, Heat dissipating element held in place by clamping or spring means257/719, Pressed against semiconductor element257/727, Device held in place by clamping257/E23.084, With bolts or screws (EPO)257/E23.086Snap-on arrangements, e.g., clips (EPO)

Examiners

Primary: Jackson, Jerome
Assistant: Arroyo, T. M.

Attorney, Agent or Firm

International Classes

H01L 023/02
H01L 023/42
H01L 023/44
H01L 023/40

Abstract

A heat sink assembly adapted for use with an electronic device package such as a microprocessor having a grid array is shown having, in a first embodiment, a threaded base of a finned heat sink adapted to be received in a threaded bore of an adaptor which mounts onto the electronic device package. Desired thermal coupling is achieved by screwing down the heat sink in biasing engagement with the package. An alternate embodiment shows the heat sink which has a snap on flange to attach the heat sink to the adaptor.

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