Granted Patent
Utility
US 6,382,502 · App. 09/521,230
Method of manufacturing a heat sink made of aluminum
Inventors:
Koichiro Fukui, Shunta Ushioda, Ichizo Tsukuda
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Mar 8, 2000
Inventors
Koichiro Fukui
Shunta Ushioda
Ichizo Tsukuda
Assignee (at issue)
Showa Denko K.K.
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.