Granted Patent
Utility
US 6,110,438 · App. 09/270,883
Method of making black phosphorus from red phosphorus
Inventors:
James N. Baillargeon, Keh-Yeng Cheng, Alfred Yi Cho, Sung-Nee George Chu, Wen-Yen Hwang
Patented Case
View Patent ↗
Granted: Aug 29, 2000
Filed: Mar 17, 1999
Inventors
James N. Baillargeon
Keh-Yeng Cheng
Alfred Yi Cho
Sung-Nee George Chu
Wen-Yen Hwang
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.