Patent Assignment
Reel/Frame 014938/0651
Assignment of Assignor's Interest
Recorded: 2004-01-26
Pages: 4
Assignors
KAWASAKI, TOSHIYUKI
Executed: 2003-10-16
OOHCHIDA, SHIGERU
Executed: 2003-10-16
SUZUDO, TSUYOSHI
Executed: 2003-10-20
MORI, KOJI
Executed: 2003-10-21
Assignee
RICOH COMPANY, LTD.
3-6, NAKAMAGOME 1-CHOME, OHTA-KU, TOKYO 143-8555, JAPAN
Covered Property
(1)
Diffraction Grating, Method of Fabricating Diffraction Optical Element, Optical Pickup Device, and Optical Disk Drive