Inventor · disambiguated record
Xiao Qingguo
Also filed as: QINGGUO XIAO
5 granted patents·2 pending applications·91 citations·filing 2001–2005
81Inventor score
Technology areasB41J
Top patents by PatentIndex Score
7 records- 0185US6929357B2Ink cartridge having bellows valve, ink filling method and apparatus used thereofUNICORN IMAGE PRODUCTS CO LTD·Filed 2003·Granted Aug 16, 2005·32 cites·31 claims
- 0283US7175264B2Device for continuously supplying ink under constant pressurePRINT RITE UNICORN IMAGE PROD·Filed 2004·Granted Feb 13, 2007·33 cites·15 claims
- 0376US6935730B2One-way valve, valve unit assembly, and ink cartridge using the sameUNICORN IMAGE PRODUCTS CO LTD·Filed 2002·Granted Aug 30, 2005·17 cites·9 claims
- 0463US7475972B2One-way valve, valve unit assembly, and ink cartridge using the sameUNICORN IMAGE PRODUCTS CO LTD·Filed 2005·Granted Jan 13, 2009·2 cites·16 claims
- 0556US7246891B2Ink cartridge for a printerPRINT RITE UNICORN IMAGE PROD·Filed 2002·Granted Jul 24, 2007·7 cites·17 claims
- 0634US2005243147A1Ink cartridge having bellows valve, ink filling method and apparatus used thereofUNICORN IMAGE PRODUCTS CO LTD·Filed 2005·Application pending·0 cites
- 0732US2003107626A1Ink cartridge having bellows valve, ink filling method and apparatus used thereofFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →