IP Library › Granted Patent US 4,513,049
Granted Patent Utility
US 4,513,049 · App. 06/488,890

Electret article

Inventors: Kazuyuki Yamasaki, Fukashi Kagawa
Patented Case View Patent ↗
Granted: Apr 23, 1985 Filed: Apr 26, 1983
Inventors
Kazuyuki Yamasaki
Fukashi Kagawa
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.

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Quick Facts
Patent No.
US 4,513,049
App. No.
06/488,890
Filed
1983-04-26
Granted
1985-04-23
Kind
A