Granted Patent
Utility
US 5,760,120 · App. 08/544,481
Laser marking resin composition
Inventors:
Hiroyuki Itoh, Yukiko Ito, Masaaki Mawatari, Hisao Nagai, Kazuo Miyamoto, Mitsuru Kawakita
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Oct 18, 1995
Inventors
Hiroyuki Itoh
Yukiko Ito
Masaaki Mawatari
Hisao Nagai
Kazuo Miyamoto
Mitsuru Kawakita
Assignee (at issue)
Japan Synthetic Rubber Corporation
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.