Electrical wire deletion

Details Electrical wire deletion Electrical wire deletion

1991-12-18

1993-09-28

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Electrical device making

29846, H05K 302

Patent

active

052477355

ABSTRACT:
A method of removing conductors in inner layers of circuit boards by applying a constant heating current for a predetermined time period, and then applying an increasing-magnitude current until the conductor vaporizes.

REFERENCES:
patent: 3028659 (1962-04-01), Chow et al.
patent: 3290757 (1963-03-01), Tanck
patent: 3378920 (1968-04-01), Cone
patent: 3384879 (1968-05-01), Stahl et al.
patent: 3548494 (1970-12-01), Haring
patent: 3555365 (1971-01-01), Forlani et al.
patent: 4652974 (1987-03-01), Ryan
patent: 4667404 (1987-05-01), Reisman et al.
IBM Technical Disclosure Bulletin, vol. 9, No. 1, Jun. 1966, p. 112, "Printed Circuit Deletion Technique" by S. S. Huang et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 12, May 1982, pp. 6383-6384, "Printed Circuit Deletion Using Capacitor Discharge" by J. Funari et al.

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