Top 100 Key Players companies in Polystyrene by Highest Patent Value in the Japan in 2022 – Discovery

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The Polystyrene top 100 is Discovery PatSnap’ annual ranking of the top 100 Highest Patent Value Polystyrene Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2022, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

Polystyrene (PS) /ˌpɒliˈstaɪriːn/ is a synthetic aromatic hydrocarbon polymer made from the monomer styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. It is a rather poor barrier to oxygen and water vapour and has a relatively low melting point. Polystyrene is one of the most widely used plastics, the scale of its production being several million tonnes per year. Polystyrene can be naturally transparent, but can be coloured with colourants. Uses include protective packaging (such as packing peanuts and CD and DVD cases), containers, lids, bottles, trays, tumblers, disposable cutlery and in the making of models.

1	Takeda Pharmaceutical Co., Ltd.	Osaka, Japan	Medicine,Health care,Clinical trial, ...[+2]	Avg patent value: 10.38 M
2	Takeda Chemical Industries Ltd.	Japan	Pharmaceutical drug,Botanical drug,Herb	Avg patent value: 10.38 M
3	Chiyoda Corp.	Kanagawa, Japan	Construction engineering,Information technology,Environmental engineering, ...[+2]	Avg patent value: 4.56 M
4	Chiyoda Co., Ltd.	Tokyo, Japan	Casual	Avg patent value: 4.56 M
5	DKS Co., Ltd.	Kyoto, Japan	Chemical engineering,Coating,Industrial engineering, ...[+2]	Avg patent value: 3.42 M
6	Japan Polyethylene Corp.	Tokyo, Japan	Polyethylene,High-density polyethylene,Industrial engineering	Avg patent value: 3.26 M
7	Sinanen Zeomic Co., Ltd.	Aichi, Japan	Chemical engineering	Avg patent value: 3.25 M
8	Fujimi, Inc.	Aichi, Japan	Abrasive,Industrial engineering,Diamond, ...[+2]	Avg patent value: 2.73 M
9	Dow Corning Toray Silicone Co. Ltd.	Tokyo, Japan	Industrial engineering	Avg patent value: 2.55 M
10	Valqua Ltd.	Tokyo, Japan	Polytetrafluoroethylene,Plastics engineering,Synthetic rubber, ...[+2]	Avg patent value: 2.51 M
11	Astellas Pharma, Inc.	Tokyo, Japan	Health care,Clinical trial,Diabetic complication, ...[+2]	Avg patent value: 2.46 M
12	Nihon Tsusho KK	Japan		Avg patent value: 2.44 M
13	Matsumoto Yushi-Seiyaku Co., Ltd.	Osaka, Japan	Surface-active agents,Microsphere,Chemical engineering, ...[+2]	Avg patent value: 2.33 M
14	Midori Anzen Co., Ltd.	Tokyo, Japan	Medical equipment	Avg patent value: 2.24 M
15	DENSO Corp.	Aichi, Japan	Automotive engineering,Industrial robot,Programmable logic controller, ...[+2]	Avg patent value: 2.14 M
16	Nihon Denso KK	Saitama, Japan	Manufacturing engineering,Mechanical engineering	Avg patent value: 2.14 M
17	JOLED, Inc.	Tokyo, Japan	Electroluminescent display,Cryptocurrency,Android (robot), ...[+2]	Avg patent value: 2.06 M
18	Daiden Co., Ltd.	Fukuoka, Japan	Electric vehicle,Semiconductor,Electronics, ...[+2]	Avg patent value: 2.06 M
19	Henkel Japan Ltd.	Tokyo, Japan	Adhesive,Industrial engineering,SOAP, ...[+1]	Avg patent value: 1.89 M
20	Nippon Zeon Co., Ltd.	Tokyo, Japan	Chemical engineering,Solid-state battery,Supercapacitor, ...[+1]	Avg patent value: 1.87 M
21	Mitsui Chemicals, Inc.	Tokyo, Japan	Petrochemical,Chemical engineering,Polypropylene, ...[+2]	Avg patent value: 1.76 M
22	Senju Pharmaceutical Co., Ltd.	Osaka, Japan	Drug,Glaucoma,Allergy, ...[+2]	Avg patent value: 1.69 M
23	Sekisui Chemical Co., Ltd.	Osaka, Japan	Synthetic rubber,Industrial engineering,Polyvinyl chloride, ...[+2]	Avg patent value: 1.68 M
24	Kumiai Chemical Industry Co., Ltd.	Tokyo, Japan	Pesticide,Fungicide,Agriculture, ...[+2]	Avg patent value: 1.61 M
25	NIPPON STEEL Stainless Steel Corp.	Tokyo, Japan	Mill,Metal,Mining engineering, ...[+1]	Avg patent value: 1.57 M
26	Pilot Corp.	Tokyo, Japan	Pencil (mathematics),Precious metal,Peripheral, ...[+1]	Avg patent value: 1.53 M
27	Pilot Ink Co., Ltd.	Aichi, Japan		Avg patent value: 1.53 M
28	Kawasaki Heavy Industries Ltd.	Kyoto, Japan	Turbine,Mechanical engineering,Manufacturing engineering, ...[+2]	Avg patent value: 1.44 M
29	Nagase ChemteX Corp.	Osaka, Japan	Functional polymers,Solid-state battery,Epoxy, ...[+2]	Avg patent value: 1.41 M
30	Nichia Corp.	Tokushima, Japan	Laser diode,Semiconductor,LED lamp, ...[+2]	Avg patent value: 1.38 M
31	NGK Insulators, Ltd.	Aichi, Japan	Beryllium copper,Industrial engineering,Pottery, ...[+2]	Avg patent value: 1.34 M
32	Evonik Degussa Japan Co., Ltd.	Tokyo, Japan		Avg patent value: 1.33 M
33	Kuraray Trading Co., Ltd.	Osaka, Japan	Textile	Avg patent value: 1.32 M
34	Murata Manufacturing Co. Ltd.	Kyoto, Japan	Semiconductor,Electronics,Electronic component, ...[+2]	Avg patent value: 1.31 M
35	Teijin Ltd.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Polycarbonate, ...[+2]	Avg patent value: 1.30 M
36	C. Uyemura & Co., Ltd.	Osaka, Japan	Surface finishing,Industrial engineering,Chromium, ...[+2]	Avg patent value: 1.28 M
37	Japan Elastomer Co. Ltd.	Japan		Avg patent value: 1.27 M
38	Asahi Kasei Chemicals Corp.	Tokyo, Japan	Chemical engineering,Ion-exchange membranes,Membrane, ...[+2]	Avg patent value: 1.26 M
39	Chugoku Marine Paints, Ltd.	Tokyo, Japan	Coating,Anti-fouling paint,Chemical engineering, ...[+2]	Avg patent value: 1.23 M
40	Dowa Electronics Materials Co., Ltd.	Tokyo, Japan	Electronics,Semiconductor,Mining engineering, ...[+2]	Avg patent value: 1.23 M
41	Shin-Etsu Chemical Co., Ltd.	Tokyo, Japan	Silicone,Semiconductor,Chemical engineering, ...[+2]	Avg patent value: 1.23 M
42	Showa Denko K.K.	Chiba, Japan	Graphite,Materials science,Nanomaterials, ...[+2]	Avg patent value: 1.19 M
43	Somar Corp.	Tokyo, Japan	Coating,Powder coating,Chemical engineering, ...[+2]	Avg patent value: 1.18 M
44	Yazaki Corp.	Tokyo, Japan	Electronic component,Automotive engineering,Cable harness, ...[+2]	Avg patent value: 1.16 M
45	Tokyo Electron Ltd.	Tokyo, Japan	Semiconductor,Power transmission,Flat panel display, ...[+2]	Avg patent value: 1.14 M
46	Kowa Co., Ltd.	Aichi, Japan	Medicine,Medical equipment,Textile, ...[+2]	Avg patent value: 1.12 M
47	Sony Group Corp.	Tokyo, Japan	Computer hardware,Software,Music, ...[+2]	Avg patent value: 1.12 M
48	Mitsubishi Materials Corp.	Tokyo, Japan	Cement,Alloy,Polycrystalline silicon, ...[+2]	Avg patent value: 1.10 M
49	Mitsubishi Materials Techno Corp.	Japan		Avg patent value: 1.10 M
50	Showa Denko Packaging Co. Ltd.	Japan	Solid-state battery,Mining engineering,Precious metal, ...[+1]	Avg patent value: 1.06 M
51	Central Glass Co., Ltd.	Tokyo, Japan	Glazing,Fine chemical,Chemical engineering, ...[+2]	Avg patent value: 992,500
52	Shin-Etsu Polymer Co., Ltd.	Tokyo, Japan	Semiconductor,Chemical engineering,Ductile iron pipe, ...[+2]	Avg patent value: 989,222
53	Tayca Corp.	Osaka, Japan	Titanium dioxide,Chemical engineering,Industrial engineering, ...[+2]	Avg patent value: 975,666
54	Nitto Denko Corp.	Osaka, Japan	Semiconductor,Product design,Adhesive, ...[+2]	Avg patent value: 961,275
55	Canon, Inc.	Tokyo, Japan	Computer hardware,Software,Computer vision, ...[+2]	Avg patent value: 928,273
56	Toray Industries, Inc.	Tokyo, Japan	Fiber,Textile,Textile (markup language), ...[+2]	Avg patent value: 907,400
57	Kuraray Co., Ltd.	Tokyo, Japan	Synthetic rubber,Isoprene,Vinyl acetate, ...[+2]	Avg patent value: 892,379
58	Asahi Kasei Life & Living Co.	Tokyo, Japan	Electronics	Avg patent value: 870,000
59	Terumo Corp.	Tokyo, Japan	Health care,Blood management,Syringe, ...[+2]	Avg patent value: 862,600
60	Stanley Electric Co., Ltd.	Tokyo, Japan	Headlamp,Automotive engineering,Backlight, ...[+2]	Avg patent value: 850,000
61	Nissan Chemical Corp.	Tokyo, Japan	Pesticide,Meiji period,Fertilizer, ...[+2]	Avg patent value: 841,500
62	Idemitsu Kosan Co., Ltd.	Tokyo, Japan	Petrochemical,Lubricant,Petroleum, ...[+2]	Avg patent value: 822,320
63	Sumitomo Chemical Co., Ltd.	Tokyo, Japan	Petrochemical,Agriculture,Pesticide, ...[+2]	Avg patent value: 820,844
64	Fujifilm Business Innovation Corp.	Chiba, Japan	Electronics,Inkjet printing,Vertical-cavity surface-emitting laser, ...[+2]	Avg patent value: 795,750
65	JSR Corp.	Tokyo, Japan	Synthetic rubber,Natural rubber,Elastomer, ...[+2]	Avg patent value: 785,286
66	Soken Chemical & Engineering Co., Ltd.	Tokyo, Japan	Adhesive,Chemical engineering,Adhesion, ...[+2]	Avg patent value: 775,142
67	Asahi Kasei Corp.	Tokyo, Japan	Chemical engineering,Petrochemical,Fertilizer, ...[+2]	Avg patent value: 760,440
68	Fujikura Kasei Co., Ltd.	Tokyo, Japan	Coating,Electronics,Coating materials, ...[+2]	Avg patent value: 758,000
69	Miyoshi Kasei, Inc.	Saitama, Japan	Cosmetics,Pigment,Silicon, ...[+2]	Avg patent value: 746,000
70	LINTEC Corp.	Tokyo, Japan	Adhesive materials,Industrial engineering,Pressure sensitive, ...[+2]	Avg patent value: 731,833
71	Polyplastics Co., Ltd.	Tokyo, Japan	Engineering plastic,Plastics engineering,Polymer, ...[+2]	Avg patent value: 708,353
72	TOKYO OHKA KOGYO CO., LTD.	Kanagawa, Japan	Photoresist,Semiconductor,Petrochemical, ...[+2]	Avg patent value: 698,857
73	Sekisui Kasei Co., Ltd.	Osaka, Japan	Civil engineering,Chemical engineering,Health care, ...[+2]	Avg patent value: 687,134
74	Tosoh Organic Chemical Co., Ltd.	Tokyo, Japan	Organic chemicals,Chemical engineering	Avg patent value: 680,000
75	Sankoh Co. Ltd.	Japan		Avg patent value: 670,000
76	Fuji Electronics Co., Ltd.	Tokyo, Japan	Semiconductor,Microcomputer,Electronic component, ...[+2]	Avg patent value: 661,428
77	Fuji Electric FA Components & SYstems Co., Ltd.	Tokyo, Japan	Semiconductor,Industrial engineering,Smart grid, ...[+2]	Avg patent value: 661,428
78	DIC Corp.	Tokyo, Japan	Pigment,Chemical engineering,Synthetic resin, ...[+2]	Avg patent value: 643,621
79	DIC Corporation		Pigment,Polymer,Epoxy, ...[+2]	Avg patent value: 643,621
80	MGC Filsheet Co., Ltd.	Japan		Avg patent value: 638,666
81	TOKIN Corp	Miyagi, Japan	Capacitor,Electronic component,Electromagnetic compatibility, ...[+2]	Avg patent value: 610,000
82	Shiseido Co., Ltd.	Tokyo, Japan	Cosmetics,Elixir,Personal Care Product, ...[+2]	Avg patent value: 608,400
83	Gunze Ltd.	Osaka, Japan	Textile,Suture (anatomy),Semiconductor, ...[+2]	Avg patent value: 605,334
84	Mitsubishi Gas Chemical Co., Inc.	Tokyo, Japan	Petroleum industry,Petrochemical,Engineering plastic, ...[+2]	Avg patent value: 581,266
85	Subaru Corp.	Tokyo, Japan	Automotive engineering,Public transport,Aerospace, ...[+2]	Avg patent value: 580,000
86	Mitsubishi Engineering-Plastics Corp.	Tokyo, Japan	Polycarbonate,Polybutylene terephthalate,Chemical engineering, ...[+2]	Avg patent value: 570,040
87	Nippon A&L, Inc.	Osaka, Japan	Synthetic resin,Synthetic rubber,Chemical engineering, ...[+2]	Avg patent value: 543,730
88	Sumitomo Electric Industries Ltd.	Osaka, Japan	Electronics,Optical fiber,Optical fiber cable, ...[+2]	Avg patent value: 536,800
89	Sumitomo Wiring Systems Ltd.	Mie, Japan	High voltage,Electronics,Power steering, ...[+2]	Avg patent value: 536,800
90	Sumitomo Electric	Osaka, Japan	Optical fiber,Electronics,Optical fiber cable	Avg patent value: 536,800
91	Autonetworks Technologies Ltd.	Japan		Avg patent value: 536,800
92	JSP Corp.	Tokyo, Japan	Polystyrene,Bead,Polyethylene, ...[+2]	Avg patent value: 490,311
93	Mitsui KK	Kagoshima, Japan	Food industry	Avg patent value: 480,000
94	Bridgestone Corp.	Tokyo, Japan	Automotive engineering,sports equipment,Natural rubber, ...[+2]	Avg patent value: 474,804
95	Panasonic Intellectual Property Management Co. Ltd.	Osaka, Japan		Avg patent value: 471,916
96	Hitachi Metals, Ltd.	Chiba, Japan	Metal,Magnet,Telecommunications, ...[+2]	Avg patent value: 470,000
97	KURABO INDUSTRIES LTD.	Osaka, Japan	Textile,Textile (markup language),Vacuum insulated panel, ...[+2]	Avg patent value: 456,846
98	Arakawa Chemical Industries Ltd.	Osaka, Japan	Rosin,Adhesion,Paper mill, ...[+2]	Avg patent value: 435,500
99	Sumitomo Metal Mining Co., Ltd.	Tokyo, Japan	Nickel,Mining engineering,Natural resource management, ...[+2]	Avg patent value: 431,500
100	Kuraray Plastics Co., Ltd.	Osaka, Japan	Polystyrene,Polypropylene,Polymer, ...[+2]	Avg patent value: 430,000