IP Library Granted Patent US 5,262,565
Granted Patent Utility
US 5,262,565 · App. 07/790,541

Naphthalene derivatives

Inventors: Hiroyuki Yoshimura, Shinya Abe, Tetsuya Kawahara, Takashi Inoue, Hiroshi Shirota, Kenichi Chiba, Kenichi Kusube, Toru Horie, Takeshi Suzuki, Isao Yamatsu, Naoyuki Shimomura, Kazuo Okano, Richard Clark, Takashi Mori, Shuhei Miyazawa, Ryoichi Hashida, Kenzo Muramoto, Koukichi Harada
Patented Case View Patent ↗
Granted: Nov 16, 1993 Filed: Nov 12, 1991
Inventors
Hiroyuki Yoshimura
Shinya Abe
Tetsuya Kawahara
Takashi Inoue
Hiroshi Shirota
Kenichi Chiba
Kenichi Kusube
Toru Horie
Takeshi Suzuki
Isao Yamatsu
Naoyuki Shimomura
Kazuo Okano
Richard Clark
Takashi Mori
Shuhei Miyazawa
Ryoichi Hashida
Kenzo Muramoto
Koukichi Harada
Assignee (at issue)
Eisai Inc.

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,262,565
App. No.
07/790,541
Filed
1991-11-12
Granted
1993-11-16
Kind
A