The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2007
Filed:
Oct. 09, 2003
Chun-liang Lai, Chiayi Hsien, TW;
Kuan-chieh Tseng, Pingtung, TW;
Chia-hung Yeh, Pingtung Hsien, TW;
Ling LU, Taoyuan Hsien, TW;
Charng-lih Jeng, Tainan Hsien, TW;
Shyue-ming Jang, Hsinchu, TW;
Bang-i Liou, Changhua Hsien, TW;
Chyuan Juang, Hsinchu, TW;
Yuan-szu Chang, Tainan, TW;
Po-han Huang, Tainan, TW;
Chun-Liang Lai, Chiayi Hsien, TW;
Kuan-Chieh Tseng, Pingtung, TW;
Chia-Hung Yeh, Pingtung Hsien, TW;
Ling Lu, Taoyuan Hsien, TW;
Charng-Lih Jeng, Tainan Hsien, TW;
Shyue-Ming Jang, Hsinchu, TW;
Bang-I Liou, Changhua Hsien, TW;
Chyuan Juang, Hsinchu, TW;
Yuan-Szu Chang, Tainan, TW;
Po-Han Huang, Tainan, TW;
Labeltek Inc., , TW;
Abstract
A method for preparing three types of benzidine compounds in a specific ratio, the method uses two types of diphenylamine compounds and one type of biphenyldihalide compound in a specific ratio as reactants to mix with an organic solvent and an additive to synthesize benzidine compounds in one step. The synthesized three types of benzidine compounds specially perform in a designated mixturing ratio having excellent photoelectric characteristics for a charge transporting layer in an organic photo-conductive drum.