Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1990-01-24
1990-07-10
Herbert, Thomas J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428209, 428336, 428469, 428901, B32B 310, B44C 122, C23F 100
Patent
active
049406272
ABSTRACT:
A graphic artwork includes a thin film coating layer thereon which includes a copper oxide which is substantially opaque to ultraviolet light and partially transmissive to visible light and suitable for printing circuiting on a printed circuit board or for other graphic artwork. In the case where the thin film compound inlcudes unoxidized copper, etching thereof to achieve a predetermined pattern on the graphic artwork is facilitated by using a mixture of ammonium chloride and hydrogen peroxide.
REFERENCES:
patent: 2825689 (1958-03-01), Preston et al.
patent: 3822155 (1974-07-01), Felstein et al.
patent: 4695880 (1987-09-01), Johnson et al.
B. Abeles et al., Applied Optics, "Composite Material Films: Optical Properties and Applications", vol. 15, No. 10, Oct. 1976, pp. 2328-2332.
Czukor Janos
Kittler, Jr. Wilfred C.
Stoddard Darrell
Andus Corporation
Burkard Herbert
Chao Yuan
Herbert Thomas J.
Rice Edith A.
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