Laser perforation method for PCB and substrate

Application Number  00128836 Application Date  2000.09.18 Publication Number  1344131 Publication Date  2002.04.10 Priority Information     International Classification  H05K3/00;H05K3/42   Applicant(s) Name  Huatong Computer Co Ltd   Address     Inventor(s) Name  Zhu Guanbai;Zheng Wenzhong;Huang Xin'er   Patent Agency Code  31100 Patent Agent  zhang zhengquan AbstractA laser perforation method for printed circuit board or substrate Read more

Reaction-type flame-retarding adhesive for flexible PCB and its preparing process

Application Number: 00115907Application Date: 2000.07.19Publication Number: 1281020Publication Date: 2001.01.24Priority Information: International: C09J133/08;H05K3/38Applicant(s) Name: Hubei-Prov Inst of ChemistryAddress: Inventor(s) Name: Fan Heping;Chen Zongyuan;Li WenminPatent Agency Code: 42102Patent Agent: zhang anguoAbstract A reaction-type flame-retarding adhesive used for flexible PCB made of polyimide film and copper foil uses the adhesive of multi-element copolymerized polyacrylates prepared from N-(2,4,6-tribromophenyl) maleimide, Read more

Method for detecting absence of electronic elements on PCB

Application Number: 00109425Application Date: 2000.06.23Publication Number: 1330508Publication Date: 2002.01.09Priority Information: International: H05K1/02Applicant(s) Name: Yingyeda Co LtdAddress: Inventor(s) Name: Huang YanmouPatent Agency Code: 11127Patent Agent: li qiangAbstract A method for detecting the absence of electronic elements on PCB features that the obvious colour markers, fluorescent markers, or light reflecting markers are made on all of the Read more

Porous power source and stratum capable of reducing PCB stripping with higher reliability

Application Number: 00106424Application Date: 2000.04.06Publication Number: 1272038Publication Date: 2000.11.01Priority Information: 1999/4/26 US 09/300,762International: H05K1/09;H05K3/00Applicant(s) Name: IBM Corp.Address: Inventor(s) Name: R. M. Gapp;M. D. PoriksPatent Agency Code: 11038Patent Agent: yu jingAbstract Power and ground planes used in Printed Circuit Boards (PCBs) having porous, conductive materials allow liquids (e.g., water and/or other solvents) to pass through the Read more

Technology for making underboarding used on perforating on PCB or insulating board for electric appliances

Application Number: 00100806Application Date: 2000.02.13Publication Number: 1309526Publication Date: 2001.08.22Priority Information: International: D06M15/41;H01B19/00;H05K1/03;H05K3/00Applicant(s) Name: Su ZuochengAddress: Inventor(s) Name: Su ZuochengPatent Agency Code: 11235Patent Agent: zhu liguangAbstract An under-boarding used on perforating on PCB or insulating board for electric devices is prepared from natural bast fibres through preparing semifinished mesh fabric by non-weaving machine, flatening, regulating thickness Read more