Perforated substrate and method of manufacture

Details Perforated substrate and method of manufacture Perforated substrate and method of manufacture

1995-12-13

1996-11-26

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429241245,, H01M 474

Patent

active

055783988

ABSTRACT:
A perforated substrate having half of the perforations formed from one major surface of the substrate and the other half formed from the opposite major surface, the two major surface being coplanar is described. This introduces equal and opposite stress forces into the substrate which essentially cancel each other and provide a product meeting exacting planarity requirements.

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patent: 4345452 (1982-08-01), Eberle
patent: 4717633 (1988-01-01), Hauser
patent: 5053292 (1991-10-01), Hasebe et al.

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