Granted Patent
Utility
US 5,429,745 · App. 08/057,116
Cylindrical filter formed of stacked fibers having a high and low melting point component
Inventors:
Satoshi Ogata, Yoshimi Tsujiyama
Patented Case
View Patent ↗
Granted: Jul 4, 1995
Filed: May 4, 1993
Inventors
Satoshi Ogata
Yoshimi Tsujiyama
Assignee (at issue)
Chisso Corporation
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.