Granted Patent
Utility
US 6,554,595 · App. 09/846,262
Compressor with oil-mist separator
Inventors:
Takeshi Hida, Shigekazu Nozawa, Masayuki Urashin, Hiroki Osumimoto, Hirotaka Kameya, Atsushi Watanabe
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: May 2, 2001
Inventors
Takeshi Hida
Shigekazu Nozawa
Masayuki Urashin
Hiroki Osumimoto
Hirotaka Kameya
Atsushi Watanabe
Assignee (at issue)
HITACHI, 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.