IP Library › Granted Patent US 6,604,839
Granted Patent Utility
US 6,604,839 · App. 09/882,493

Multi-chip LED color mixing by diffraction

Inventors: Christopher Coleman, Robert Weissman
Patented Case View Patent ↗
Granted: Aug 12, 2003 Filed: Jun 15, 2001
Inventors
Christopher Coleman
Robert Weissman
Assignee (at issue)
Lumileds Lighting US, LLC

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 6,604,839
App. No.
09/882,493
Filed
2001-06-15
Granted
2003-08-12
Kind
B2