IP Library › Granted Patent US 5,885,979
Granted Patent Utility
US 5,885,979 · App. 08/852,292

N-containing condensed heterocyclic compounds, their production, and their uses

Inventors: Hidefumi Yukimasa, Ryuichi Tozawa, Masakuni Kori, Kazuaki Kitano, Yasuo Sugiyama
Patented Case View Patent ↗
Granted: Mar 23, 1999 Filed: May 7, 1997
Inventors
Hidefumi Yukimasa
Ryuichi Tozawa
Masakuni Kori
Kazuaki Kitano
Yasuo Sugiyama
Assignee (at issue)
Takeda Chemical Industries 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.

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 5,885,979
App. No.
08/852,292
Filed
1997-05-07
Granted
1999-03-23
Kind
A