HG

Haike Guan

Ricoh Company: 1 patents #306 of 812Top 40%
Overall (2005): #193,975 of 245,428Top 80%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6901236 Method, program, and apparatus for preventing a reproduction of an anti-copy document, and a medium storing the program Takashi Saitoh, Yasushi Abe 2005-05-31