Slotted substrates and methods and systems for forming same

Details Slotted substrates and methods and systems for forming same Slotted substrates and methods and systems for forming same

2005-12-27

2005-12-27

Heinrich, Samuel M. (Department: 1725)

Electric heating

Metal heating

By arc

Reexamination Certificate

active

06979797

ABSTRACT:
Methods and systems for forming slots in a substrate that has opposing first and second surfaces. The method makes a laser cut through either the first or second surface of the substrate sufficient to form a first trench. Material is also removed through the other of the first and second surfaces effective to form, in combination with the laser cut, a slot. At least a portion of the slot passes entirely through the substrate, and the slot has an aspect ratio greater than or equal to 1.

REFERENCES:
patent: 5441593 (1995-08-01), Baughman et al.
patent: 5455998 (1995-10-01), Miyazono et al.
patent: 0 609 012 (1994-08-01), None
patent: 0 764 533 (1997-03-01), None

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