Edward L Reynolds

US Patent:

55475370, Aug 20, 1996

Filed:

Jun 3, 1994

Appl. No.:

8/253579

Inventors:

Edward P. Reynolds - Philadelphia PA
Natale F. Tinnerino - Doylestown PA
Walter P. Schiefele - Sebastian FL

Assignee:

Kulicke & Soffa, Investments, Inc. - Wilmington DE

International Classification:

B23B 3500
B23P 1900

US Classification:

156351

Abstract:

An aligning and positioning system for a bonder including a bond sensor for sensing the X, Y and. theta. coordinates of a substrate at the bonding location and a die sensor for sensing the X, Y and. theta. coordinates of the die on a die transport. A controller correlates the sensed coordinates from the sensors and adjusts the X, Y and. theta. of the die and the substrate relative to each other to place the die at a preselected bond site on the substrate. The Z coordinate of the surface of the substrate, as well as its planarity, may be sensed by a Z optical sensor. The X and Y coordinates of the substrate are adjusted and the. theta. coordinate of the die on the die transport is adjusted. A pattern recognition system is used with the die and bond sensors to determine the coordinates as well as quality control of the substrate prior to bonding, the quality of paste pattern on the die or the substrate prior to bonding and the quality of the bond and the coordinates of the die after bonding. In a calibration phase, the controller correlates the X, Y and. theta.

US Patent:

20210113954, Apr 22, 2021

Filed:

Oct 17, 2019

Appl. No.:

16/656064

Inventors:

- Houston TX, US
Edward J. Reynolds - Middletown DE, US

International Classification:

B01D 53/14
B01D 71/02

Abstract:

An improvement in a wet scrubbing process for treating gaseous industrial process streams which contain one or more of SO, SO, HSOwhich comprises contacting the stream of gas with a countercurrent flow of liquid derived from a circulating liquid stream which includes (i) a purge stream configured to remove a portion of the circulating liquid having a concentration of HSOfrom the process, and (ii) a liquid make-up stream configured to replace the portion of the circulating liquid that is removed from the circulating liquid stream, the improvement comprising controlling the flow of liquid make-up whereby the concentration of HSOin the purge stream is increased to a useful value; and filtering the purge stream to remove unwanted contaminants to yield a clarified purge stream.