KH

Kei Hagiwara

Ricoh Company: 4 patents #4,167 of 9,818Top 45%
Overall (All Time): #1,248,184 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7558172 Optical disk device recording data on a recordable or rewritable optical disk by setting a recording velocity and a recording power for each of zones on an optical disk Haruyuki Suzuki 2009-07-07
7230891 Optical disk device recording data on a recordable or rewritable optical disk by setting a recording velocity and a recording power for each of zones on an optical disk 2007-06-12
7079475 Pre-pit information-detecting apparatus, optical-information detecting apparatus, program, and computer-readable information-recording medium 2006-07-18
6987717 Optical disk device recording data on a recordable or rewritable optical disk by setting a recording velocity and a recording power for each of zones on an optical disk Haruyuki Suzuki 2006-01-17