Edward J Markland, Age 91263 Walker St, Clarksburg, MA 01247
Edward Markland Phones & Addresses
263 Walker St, North Adams, MA 01247 (413) 663-9955 (413) 663-9995
263 Walker St, North Adams, MA 01247 (413) 663-9995
Work
Position:
Retired
Education
Degree:
Associate degree or higher
Mentions for Edward J Markland
Publications & IP owners
Us Patents
Ac Etching Of Aluminum Capacitor Foil
US Patent:
4332651, Jun 1, 1982
Filed:
May 20, 1981
Appl. No.:
6/265296
Inventors:
Richard A. Bemis - Clarksburg MA
Clinton E. Hutchins - Pownal VT
Edward J. Markland - North Adams MA
Mulk R. Arora - Williamstown MA
Clinton E. Hutchins - Pownal VT
Edward J. Markland - North Adams MA
Mulk R. Arora - Williamstown MA
Assignee:
Sprague Electric Company - North Adams MA
International Classification:
C25F 304
C25F 314
C25F 314
US Classification:
2041299
Abstract:
Aluminum capacitor foil is etched in a bath at 30. degree. to 45. degree. C. containing 0. 5 to 1. 8 M hydrochloric acid, 0. 05 to 0. 3 M phosphoric acid, 0. 2 to 0. 5 aluminum chloride and 0. 09 to 1. 0 M alkali or alkaline earth metal chloride while being subjected to alternating current at 15 to 36 Hz frequency.
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