Granted Patent
Utility
US 6,508,564 · App. 09/717,144
Surface light source device and adjusting method of chromaticity thereof
Inventors:
Satoshi Kuwabara, Hiroshi Yamashita, Toru Yamamura, Nobuhito Nishida, Masashi Ochiiwa, Michiaki Satou
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Nov 22, 2000
Inventors
Satoshi Kuwabara
Hiroshi Yamashita
Toru Yamamura
Nobuhito Nishida
Masashi Ochiiwa
Michiaki Satou
Assignee (at issue)
SANYO ELECTRIC CO., LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.