Granted Patent
Utility
US 5,810,077 · App. 08/803,264
Layered heat exchanger
Inventors:
Jumpei Nakamura, Hiroki Shibata, Keiji Yamazaki, Tatsuya Hanafusa, Nobuaki Go
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Feb 20, 1997
Inventors
Jumpei Nakamura
Hiroki Shibata
Keiji Yamazaki
Tatsuya Hanafusa
Nobuaki Go
Assignee (at issue)
Showa Aluminum Corp.
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.