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Katsuyuki Ohtsuka
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Mito, JP
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Patents Grants
last 30 patents
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Patent Grant
Method of recovering and storing radioactive iodine by freeze vacuu...
Patent number
5,252,258
Issue date
Oct 12, 1993
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method of separating and purifying spent solvent generated in nucle...
Patent number
5,110,507
Issue date
May 5, 1992
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Spent fuel treatment method
Patent number
4,981,616
Issue date
Jan 1, 1991
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Method of treating high-level radioactive waste liquid
Patent number
4,980,093
Issue date
Dec 25, 1990
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Method for thermal decomposition treatment of radioactive waste
Patent number
4,895,678
Issue date
Jan 23, 1990
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Method of treatment of radioactive liquid waste
Patent number
4,844,838
Issue date
Jul 4, 1989
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Process for the treatment of radioactive sodium
Patent number
4,643,846
Issue date
Feb 17, 1987
Doryokuro Kakunenryo Kaihatsu Jigyodan
Makoto Kanai
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Apparatus and method for melting and treating metal wastes
Patent number
4,591,454
Issue date
May 27, 1986
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method of stabilized operation of acid digestion kettle of tantalum
Patent number
4,587,098
Issue date
May 6, 1986
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Heat treating apparatus using microwaves
Patent number
4,565,670
Issue date
Jan 21, 1986
Doryokuro Kakunenryo Kaihatsu Jigyodan
Hitoshi Miyazaki
F26 - DRYING
Information
Patent Grant
Heat treating method and apparatus using microwave
Patent number
4,400,604
Issue date
Aug 23, 1983
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for producing oxide powder
Patent number
4,364,859
Issue date
Dec 21, 1982
Doryokuro Kakunenryo Kaihatsu Jigyodan
Katsuyuki Ohtsuka
C01 - INORGANIC CHEMISTRY