Granted Patent
Utility
US 6,596,190 · App. 09/806,348
Remediation agent for contaminated soil and method for the remediation of soil
Inventors:
Junji Igawa, Yasunori Kimura, Terunobu Maeda
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Mar 29, 2001
Inventors
Junji Igawa
Yasunori Kimura
Terunobu Maeda
Assignees (at issue)
Hazama Corp.
Toyo Ink Mfg. 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.