Granted Patent
Utility
US 5,687,589 · App. 08/611,512
Batch dyeing system with automatic chemical-dosing and pH control system
Inventors:
Shin-Chuan Yao, Jongfu Wu, Feng Lin, Li Wang, Wei WU, Yu-Cheng Wang, Judson Lee
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Mar 7, 1996
Inventors
Shin-Chuan Yao
Jongfu Wu
Feng Lin
Li Wang
Wei WU
Yu-Cheng Wang
Judson Lee
Assignee (at issue)
China Textile Institute
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.