| 发明名称 |
CONDITIONING AND SHAPING SOLUTION FOR CIRCUIT BOARDS |
| 摘要 |
A preferred solution of sodium dichromate, sulfuric acid, and orthophosphoric acid maintained at a pH of less than one is used to etch away sharp edges (burrs) remaining after a copper clad epoxy-glass laminate has been drilled and to condition the epoxy glass for metal deposition.
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| 申请公布号 |
US3653997(A) |
申请公布日期 |
1972.04.04 |
| 申请号 |
USD3653997 |
申请日期 |
1970.06.22 |
| 申请人 |
NORTH AMERICAN ROCKWELL CORP. |
发明人 |
BILL F. ROTHSCHILD;FREDRICK C. SEYMOUR;JON G. THOMAS |
| 分类号 |
C23F1/18;H05K3/00;H05K3/38;(IPC1-7):C23F1/02;C09K3/00 |
主分类号 |
C23F1/18 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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