Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1997-10-29
1999-07-06
Lipman, Bernard
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
522117, 522121, 522173, 522178, 522182, 522183, 526302, 526308, 526313, 526320, 5263232, G03C 1725, C08J 328
Patent
active
059196033
ABSTRACT:
In an additive process for producing printed wiring boards, by using a developer comprising a chlorine-free organic solvent and an alkaline aqueous solution and as a resist material a copolymer of methacrylic acid and methyl methacrylate or the like, the production steps are simplified even if a substrate having a large area is used, and abolishment of chlorine-containing organic solvent as a developer becomes possible.
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Printed Circuit World Convention 2, Jun. 5, 1987, Tokyo, Japan, p. WC-68, K. Masui, et al "Resist for Photo-Additive Printed Wiring Boards".
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Akahoshi Haruo
Ishimaru Toshiaki
Kikuta Kenzi
Miyazaki Masashi
Nohara Shozo
Hitachi , Ltd.
Lipman Bernard
Sarofim N.
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