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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Soft contact lens and method for suppressing attachment of soft con...
Patent number
11,119,338
Issue date
Sep 14, 2021
Seed Co., Ltd.
Akira Nakamura
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Annular device
Patent number
9,921,419
Issue date
Mar 20, 2018
Seed Co., Ltd.
Akira Nakamura
G02 - OPTICS
Information
Patent Grant
Method for melting incineration residue and apparatus therefor
Patent number
6,084,903
Issue date
Jul 4, 2000
NKK Corporation
Tsutomu Fukushima
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of refining ferrous ion-containing acid solution
Patent number
4,889,697
Issue date
Dec 26, 1989
NKK Corporation
Tsutomu Fukushima
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Rotary furnace used for the production of ferrochromium
Patent number
4,515,352
Issue date
May 7, 1985
Nippon Kokan Kabushiki Kaisha
Tsutomu Fukushima
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method for the production of ferrochromium
Patent number
4,414,026
Issue date
Nov 8, 1983
Nippon Kokan Kabushiki Kaisha
Tsutomu Fukushima
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method for the production of ferrochromium
Patent number
4,412,862
Issue date
Nov 1, 1983
Nippon Kokan Kabushiki Kaisha
Tsuneo Miyashita
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method and apparatus for measuring height level of melting zone in...
Patent number
4,378,993
Issue date
Apr 5, 1983
Nippon Kokan Kabushiki Kaisha
Tsutomu Fukushima
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
SOFT CONTACT LENS AND METHOD FOR SUPPRESSING ATTACHMENT OF SOFT CON...
Publication number
20200310161
Publication date
Oct 1, 2020
Seed Co., Ltd.
Akira Nakamura
G02 - OPTICS
Information
Patent Application
ANNULAR DEVICE
Publication number
20160103336
Publication date
Apr 14, 2016
SEED CO., LTD.
Akira NAKAMURA
G02 - OPTICS