Patent Assignment
Reel/Frame 026470/0521
Assignment of Assignor's Interest
Recorded: 2011-06-21
Pages: 3
Assignor
HIRAI, HIDEAKI
Executed: 2011-06-09
Assignee
RICOH COMPANY, LTD.
3-6, NAKAMAGOME 1-CHOME, OHTA-KU, TOKYO, 143-8555, JAPAN
Covered Property
(1)
Optical element having three or more sub-wavelength convexo-concave structures