IP Library › Granted Patent US 4,626,263
Granted Patent Utility
US 4,626,263 · App. 06/726,367

High-performance electret and air filter

Inventors: Naofumi INOUE, Satoshi Matsuura
Patented Case View Patent ↗
Granted: Dec 2, 1986 Filed: Apr 23, 1985
Inventors
Naofumi INOUE
Satoshi Matsuura
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.

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Quick Facts
Patent No.
US 4,626,263
App. No.
06/726,367
Filed
1985-04-23
Granted
1986-12-02
Kind
A