IP Library Granted Patent US 10,307,850
Granted Patent B2
US 10,307,850 · App. 15/686,008 · Granted Jun 4, 2019

Solder removal from semiconductor devices

Inventor: Mark E. Tuttle (Meridian, ID)
Assignee: Micron Technology, Inc.
B23K1/018H01L22/32H01L24/799H01L24/98B23K2101/40H01L2224/7999H01L2224/98
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Quick Facts
Patent No.
US 10,307,850
App. No.
15/686,008
Granted
Jun 4, 2019
Kind
B2
Abstract

A solder removal apparatus is provided. The solder removal apparatus comprises a plurality of solder-interfacing protrusions extending from a body by a length. Each of the plurality of solder-interfacing protrusions is configured to remove a corresponding one of a plurality of solder features from a semiconductor device, where each of the plurality of solder features has a height and an amount of solder material.

Claims (7)

1. A solder removal apparatus, comprising:

a plurality of solder-interfacing elongated solid pins extending from a body by a length, each of the plurality of solder-interfacing elongated solid pins having an outer surface of solder-wettable material configured to remove a corresponding one of a plurality of solder features from a semiconductor device, each of the plurality of solder features having a height and an amount of solder material, wherein the outer surface of at least one of the plurality of solder-interfacing elongated solid pins has an area sufficient to support the amount of solder material of the corresponding one of the plurality of solder features.

2. The solder removal apparatus of claim 1 , wherein the plurality of solder-interfacing elongated solid pins are arranged in a first pattern corresponding to a second pattern in which the plurality of solder features of the semiconductor device are arranged.

3. The solder removal apparatus of claim 1 , wherein the length of each solder-interfacing elongated solid pin is greater than the height of the corresponding one of the plurality of solder features.

4. The solder removal apparatus of claim 1 , wherein at least one of the plurality of solder-interfacing elongated solid pins tapers from a first cross-sectional area closer to the body to a second cross-sectional area less than the first cross-sectional area further from the body.

5. The solder removal apparatus of claim 1 , wherein at least one of the plurality of solder-interfacing elongated solid pins has a greater surface area than that of a cylindrical pin having the same length and displacing the same volume.

6. The solder removal apparatus of claim 1 , wherein each solder-interfacing elongated solid pins is removably attached to the body.

Assignments (7)
RELEASE OF SECURITY INTEREST Recorded Nov 12, 2019
From: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
To: MICRON TECHNOLOGY, INC.; MICRON SEMICONDUCTOR PRODUCTS, INC.
Reel/Frame 051028/0001 →
RELEASE OF SECURITY INTEREST Recorded Oct 10, 2019
From: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
To: MICRON TECHNOLOGY, INC.
Reel/Frame 050709/0838 →
RELEASE OF SECURITY INTEREST Recorded Jul 20, 2018
From: U.S. BANK NATIONAL ASSOCIATION, AS AGENT
To: MICRON TECHNOLOGY, INC.
Reel/Frame 046597/0333 →
SECURITY INTEREST Recorded Jul 13, 2018
From: MICRON TECHNOLOGY, INC.; MICRON SEMICONDUCTOR PRODUCTS, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 047540/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 13, 2017
From: TUTTLE, MARK E.
To: MICRON TECHNOLOGY, INC.
Reel/Frame 044391/0048 →
SUPPLEMENT NO. 6 TO PATENT SECURITY AGREEMENT Recorded Nov 1, 2017
From: MICRON TECHNOLOGY, INC.
To: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 044348/0253 →
SUPPLEMENT NO. 6 TO PATENT SECURITY AGREEMENT Recorded Nov 1, 2017
From: MICRON TECHNOLOGY, INC.
To: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
Reel/Frame 044653/0333 →
Continuity (1)
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