Zenzi Hagiwara

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Kusatsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for extraction of highly purified oxygen
- Patent number 4,519,813
- Issue date May 28, 1985
- Osaka Oxygen Industries Ltd.
- Zenzi Hagiwara
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for removing ozone from an ozone-containing gas
- Patent number 4,259,299
- Issue date Mar 31, 1981
- Osaka Oxygen Ind Ltd.
- Zenzi Hagiwara
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL