Etsuo Otsuki — 3 Patents at Tokin

Etsuo Otsuki has been granted 3 US patents while listed as an inventor at Tokin. The first was granted in 1990 and the most recent in March 1997. Etsuo Otsuki ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Etsuo Otsuki in Rifu, JP.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5614805	Method and apparatus for charging a secondary battery by supplying pulsed current as charging current	Hiroshi Momotani, Akio Hasebe, Tamiko Takeuchi	1997-03-25
5011552	Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder	Tsutomu Otsuka	1991-04-30
4898625	Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder	Tsutomu Otsuka	1990-02-06

Etsuo Otsuki — 3 Patents

Issued Patents All Time

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