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Katsuhei Ohnishi
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Shizuoka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Polyarylene sulfide resin composition, molded article, and optical...
Patent number
11,932,730
Issue date
Mar 19, 2024
Polyplastics Co., Ltd.
Katsuhei Ohnishi
G02 - OPTICS
Information
Patent Grant
Polyarylene sulfide-based resin composition and insert-molded product
Patent number
11,091,635
Issue date
Aug 17, 2021
Polyplastics Co., Ltd.
Katsuhei Ohnishi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyarylene sulfide resin composition and insert molded article
Patent number
10,927,255
Issue date
Feb 23, 2021
Polyplastics Co., Ltd.
Katsuhei Ohnishi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method for producing polyarylene sulfide resin composition
Patent number
8,703,029
Issue date
Apr 22, 2014
Polyplastics Co., Ltd.
Kazunari Takada
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Modified polyacetal and method of producing the same
Patent number
5,973,081
Issue date
Oct 26, 1999
Polyplastics Co., Ltd.
Hiroyuki Kanai
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
POLYARYLENE SULFIDE RESIN COMPOSITION, MOLDED ARTICLE, AND OPTICAL...
Publication number
20240043620
Publication date
Feb 8, 2024
Polyplastics Co., Ltd.
Katsuhei OHNISHI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD OF SUPPRESSING BURR OF POLYARYLENE SULFIDE RESIN COMPOSITION
Publication number
20230242762
Publication date
Aug 3, 2023
Polyplastics Co., Ltd.
Hidekazu IDEI
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
POLYARYLENE SULFIDE-BASED RESIN COMPOSITION AND INSERT-MOLDED PRODUCT
Publication number
20210246311
Publication date
Aug 12, 2021
Polyplastics Co., Ltd.
Katsuhei Ohnishi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
POLY(ARYLENE SULFIDE) RESIN COMPOSITION AND INSERT-MOLDED ARTICLE
Publication number
20190322867
Publication date
Oct 24, 2019
Polyplastics Co., Ltd.
Katsuhei Ohnishi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
POLYARYLENE SULFIDE RESIN COMPOSITION AND INSERT MOLDED ARTICLE
Publication number
20190002693
Publication date
Jan 3, 2019
Polyplastics Co., Ltd.
Katsuhei Ohnishi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
POLYARYLENE SULFIDE-DERIVED RESIN COMPOSITION AND INSERT MOLDED BODY
Publication number
20170096557
Publication date
Apr 6, 2017
Polyplastics Co., Ltd.
Katsuhei OHNISHI
B32 - LAYERED PRODUCTS
Information
Patent Application
POLYARYLENE SULFIDE RESIN COMPOSITION
Publication number
20130035440
Publication date
Feb 7, 2013
Polyplastics Co., Ltd.
Raita Nishikawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
METHOD FOR PRODUCING POLYARYLENE SULFIDE RESIN COMPOSITION
Publication number
20110037193
Publication date
Feb 17, 2011
Polyplastics Co., Ltd.
Kazunari Takada
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL