Granted Patent
Utility
US 5,979,542 · App. 09/044,183
Laminated heat exchanger
Inventors:
Seiji Inoue, Kunihiko Nishishita, Fumio Ohkubo
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Mar 19, 1998
Inventors
Seiji Inoue
Kunihiko Nishishita
Fumio Ohkubo
Assignee (at issue)
Zexel GmbH
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.