Top 100 Key Players companies in Polystyrene by Most Patent Filings in the Japan in 2018 – Discovery

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The Polystyrene top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Filings Polystyrene Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2018, 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	Sekisui Kasei Co., Ltd.	Osaka, Japan	Civil engineering,Chemical engineering,Health care, ...[+2]	Patent: 941
2	Asahi Kasei Corp.	Tokyo, Japan	Chemical engineering,Petrochemical,Fertilizer, ...[+2]	Patent: 809
3	Sumitomo Chemical Co., Ltd.	Tokyo, Japan	Petrochemical,Agriculture,Pesticide, ...[+2]	Patent: 742
4	JSR Corp.	Tokyo, Japan	Synthetic rubber,Natural rubber,Elastomer, ...[+2]	Patent: 544
5	Kaneka Corp.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Polyvinyl chloride, ...[+2]	Patent: 462
6	Panasonic Holdings Corp.	Osaka, Japan	Semiconductor,Industrial engineering,Electronics, ...[+2]	Patent: 424
7	Matsushita Electronics Corp.	Osaka, Japan	Electronics,Computer hardware,DVD player, ...[+2]	Patent: 424
8	JSP Corp.	Tokyo, Japan	Polystyrene,Bead,Polyethylene, ...[+2]	Patent: 374
9	Toray Industries, Inc.	Tokyo, Japan	Fiber,Textile,Textile (markup language), ...[+2]	Patent: 373
10	Bridgestone Corp.	Tokyo, Japan	Automotive engineering,sports equipment,Natural rubber, ...[+2]	Patent: 371
11	Mitsui Chemicals, Inc.	Tokyo, Japan	Petrochemical,Chemical engineering,Polypropylene, ...[+2]	Patent: 370
12	Idemitsu Kosan Co., Ltd.	Tokyo, Japan	Petrochemical,Lubricant,Petroleum, ...[+2]	Patent: 351
13	Toyobo Co., Ltd.	Osaka, Japan	Chemical engineering,Synthetic rubber,Membrane, ...[+2]	Patent: 289
14	Sekisui Chemical Co., Ltd.	Osaka, Japan	Synthetic rubber,Industrial engineering,Polyvinyl chloride, ...[+2]	Patent: 279
15	Canon, Inc.	Tokyo, Japan	Computer hardware,Software,Computer vision, ...[+2]	Patent: 272
16	Daicel Corp.	Chiba, Japan	Airbag,Chemical engineering,Cellulose acetate, ...[+2]	Patent: 261
17	Ricoh Co., Ltd.	Tokyo, Japan	Digital media,Data visualization,Thermal paper, ...[+2]	Patent: 253
18	FUJIFILM Corp.	Tokyo, Japan	Photography,Medical imaging,Computer hardware, ...[+2]	Patent: 228
19	Tosoh Corp.	Tokyo, Japan	Petrochemical,Chemical engineering,Immunoprotein, ...[+2]	Patent: 226
20	Shin-Etsu Chemical Co., Ltd.	Tokyo, Japan	Silicone,Semiconductor,Chemical engineering, ...[+2]	Patent: 225
21	DIC Corp.	Tokyo, Japan	Pigment,Chemical engineering,Synthetic resin, ...[+2]	Patent: 224
22	DIC Corporation		Pigment,Polymer,Epoxy, ...[+2]	Patent: 224
23	Showa Denko Materials Co., Ltd.	Tokyo, Japan	Semiconductor,Carbon product,Efficient energy use, ...[+2]	Patent: 221
24	Kuraray Co., Ltd.	Tokyo, Japan	Synthetic rubber,Isoprene,Vinyl acetate, ...[+2]	Patent: 215
25	Dai Nippon Printing Co., Ltd.	Tokyo, Japan	Electronics,Publishing,Publication, ...[+2]	Patent: 213
26	Dainippon Printing Co. Ltd.	Japan		Patent: 213
27	Teijin Ltd.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Polycarbonate, ...[+2]	Patent: 198
28	Idemitsu Petrochemical Co., Ltd.	Tokyo, Japan	Petrochemical,Chemical engineering,Butene, ...[+2]	Patent: 193
29	Sumitomo Bakelite Co., Ltd.	Tokyo, Japan	Semiconductor,Materials science,Bakelite, ...[+2]	Patent: 192
30	Mitsubishi Gas Chemical Co., Inc.	Tokyo, Japan	Petroleum industry,Petrochemical,Engineering plastic, ...[+2]	Patent: 173
31	TOSHIBA Corp.	Tokyo, Japan	Semiconductor,Computer hardware,Electronics, ...[+2]	Patent: 154
32	Konica Minolta, Inc.	Tokyo, Japan	Medical imaging,Attractiveness,Product group, ...[+2]	Patent: 152
33	Sony Group Corp.	Tokyo, Japan	Computer hardware,Software,Music, ...[+2]	Patent: 151
34	Hitachi Ltd.	Tokyo, Japan	Elevator,Electrical equipment,Electric motor, ...[+2]	Patent: 148
35	Showa Denko K.K.	Chiba, Japan	Graphite,Materials science,Nanomaterials, ...[+2]	Patent: 137
36	Asahi Kasei Chemicals Corp.	Tokyo, Japan	Chemical engineering,Ion-exchange membranes,Membrane, ...[+2]	Patent: 137
37	Nippon Zeon Co., Ltd.	Tokyo, Japan	Chemical engineering,Solid-state battery,Supercapacitor, ...[+1]	Patent: 136
38	Mitsubishi Plastics, Inc.	Tokyo, Japan	Bottle,Chemical engineering,Plastic film, ...[+2]	Patent: 126
39	Nitto Denko Corp.	Osaka, Japan	Semiconductor,Product design,Adhesive, ...[+2]	Patent: 124
40	Gunze Ltd.	Osaka, Japan	Textile,Suture (anatomy),Semiconductor, ...[+2]	Patent: 122
41	Mitsubishi Engineering-Plastics Corp.	Tokyo, Japan	Polycarbonate,Polybutylene terephthalate,Chemical engineering, ...[+2]	Patent: 114
42	Toppan, Inc.	Tokyo, Japan	Publishing,Semiconductor,Electronics, ...[+2]	Patent: 98
43	UBE Corp.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Coal mining, ...[+2]	Patent: 84
44	Fujitsu Ltd.	Tokyo, Japan	Cloud computing,Enterprise software,Information technology management, ...[+2]	Patent: 82
45	Seiko Epson Corp.	Nagano, Japan	Wearable technology,Projector,Electronics, ...[+2]	Patent: 80
46	GE Plastics Japan Ltd.	Tokyo, Japan	Chemical engineering,Plastomer,Thermoplastic elastomer, ...[+2]	Patent: 80
47	Mitsubishi Electric Engineering Co., Ltd.	Tokyo, Japan		Patent: 80
48	Polyplastics Co., Ltd.	Tokyo, Japan	Engineering plastic,Plastics engineering,Polymer, ...[+2]	Patent: 77
49	Kao Corp.	Tokyo, Japan	Cosmetics,Health care,Hair conditioner, ...[+2]	Patent: 76
50	Nippon Micrometal Corp.	Saitama, Japan	Solder ball,Printed electronics,Metal	Patent: 75
51	Nagoya Oilchemical Co. Ltd.	Japan		Patent: 72
52	AGC	Tokyo, Japan	Fluorine,Glazing,Chemical engineering, ...[+2]	Patent: 67
53	Asahi Fiber Glass Co., Ltd.	Tokyo, Japan	Glass wool,Thermal insulation,Fiber, ...[+2]	Patent: 67
54	Oji Holdings Corp.	Tokyo, Japan	Containerboard,Paperboard,Thermal paper, ...[+2]	Patent: 66
55	NIPPON STEEL Stainless Steel Corp.	Tokyo, Japan	Mill,Metal,Mining engineering, ...[+1]	Patent: 66
56	SANYO Electric Co., Ltd.	Osaka, Japan	Semiconductor,Computer hardware,Software, ...[+2]	Patent: 61
57	Chisso Corp.	Tokyo, Japan	Petrochemical,Liquid crystal,Chemical engineering, ...[+2]	Patent: 61
58	Toyota Motor Corp.	Aichi, Japan	Sport utility vehicle,Mobile device,Public transport, ...[+2]	Patent: 59
59	NEC Corp.	Tokyo, Japan	Virtualization,Big data,Network security, ...[+2]	Patent: 58
60	Nissan Chemical Corp.	Tokyo, Japan	Pesticide,Meiji period,Fertilizer, ...[+2]	Patent: 58
61	Mitsubishi Kogyo KK	Japan		Patent: 58
62	Fujifilm Business Innovation Corp.	Chiba, Japan	Electronics,Inkjet printing,Vertical-cavity surface-emitting laser, ...[+2]	Patent: 57
63	Nippon Telegraph & Telephone Corp.	Tokyo, Japan	Telecommunications,Cloud database,Data center, ...[+2]	Patent: 55
64	Achilles Corp.	Tokyo, Japan	Shock absorber,Plastics engineering,Industrial engineering, ...[+2]	Patent: 55
65	Toyo Ink SC Holdings Co., Ltd.	Hokkaido, Japan	Pigment,Manufacturing engineering,Coating, ...[+2]	Patent: 53
66	Dainichiseika Color & Chemicals Mfg. Co., Ltd.	Tokyo, Japan	Pigment,Chemical engineering,Polymer, ...[+2]	Patent: 51
67	Kureha Corp.	Hokkaido, Japan	Chemical engineering,Polyvinylidene fluoride,Wallpaper, ...[+2]	Patent: 50
68	Sharp Corp.	Osaka, Japan	Computer hardware,Electronics,Telecommunications, ...[+2]	Patent: 49
69	Mitsubishi Paper Mills Ltd.	Tokyo, Japan	Paperboard,Thermal paper,3D printing, ...[+2]	Patent: 49
70	Furukawa Electric Co., Ltd.	Tokyo, Japan	Optical fiber,Renewable energy,Optoelectronics, ...[+2]	Patent: 48
71	Unitika Ltd.	Osaka, Japan	Fiber,Textile (markup language),Polymer, ...[+2]	Patent: 48
72	Sumitomo Electric Industries Ltd.	Osaka, Japan	Electronics,Optical fiber,Optical fiber cable, ...[+2]	Patent: 47
73	Toyo Tire Corp.	Hyogo, Japan	Automotive engineering,Radial tire,Rubber material, ...[+2]	Patent: 47
74	Sumitomo Electric	Osaka, Japan	Optical fiber,Electronics,Optical fiber cable	Patent: 47
75	Fuji Seal International, Inc.	Osaka, Japan	Barcode,Sleeve,Microservices, ...[+2]	Patent: 46
76	NOF Corp.	Tokyo, Japan	Organic peroxide,Chemical engineering,Fatty acid, ...[+2]	Patent: 46
77	Nippon Kayaku Co., Ltd.	Tokyo, Japan	Biosimilar,Chemical engineering,Industrial engineering, ...[+2]	Patent: 44
78	DKS Co., Ltd.	Kyoto, Japan	Chemical engineering,Coating,Industrial engineering, ...[+2]	Patent: 43
79	Terumo Corp.	Tokyo, Japan	Health care,Blood management,Syringe, ...[+2]	Patent: 42
80	TOKYO OHKA KOGYO CO., LTD.	Kanagawa, Japan	Photoresist,Semiconductor,Petrochemical, ...[+2]	Patent: 42
81	Lion Corp.	Tokyo, Japan	Toothpaste,Fast-moving consumer goods,Laundry, ...[+2]	Patent: 41
82	Evonik Degussa Japan Co., Ltd.	Tokyo, Japan		Patent: 40
83	Asahi Chemical Industry Co., Ltd.	Japan	Chemical industry,Chemical engineering	Patent: 40
84	Kanebo Ltd.	Tokyo, Japan	Textile,Cosmetics,Food products, ...[+2]	Patent: 39
85	PS Japan Corp.	Tokyo, Japan	Polystyrene,Synthetic rubber,Chemical engineering, ...[+1]	Patent: 39
86	The Yokohama Rubber Co., Ltd.	Chiba, Japan	Automotive engineering,Radial tire,Tire manufacturing, ...[+2]	Patent: 38
87	Fujikura Ltd.	Tokyo, Japan	Mobile device,Optoelectronics,Optical fiber, ...[+2]	Patent: 38
88	Toagosei Co., Ltd.	Tokyo, Japan	Adhesive,Chemical engineering,Polymer, ...[+2]	Patent: 38
89	Tomoegawa Co., Ltd.	Tokyo, Japan	Materials processing,Industrial engineering,Nonwoven fabric, ...[+2]	Patent: 38
90	Dow Corning Toray Silicone Co. Ltd.	Tokyo, Japan	Industrial engineering	Patent: 38
91	Mitsubishi Yuka Badische Co., Ltd.	Japan		Patent: 38
92	Nissan Motor Co., Ltd.	Kanagawa, Japan	Truck,Public transport,Automotive engineering, ...[+2]	Patent: 37
93	Central Glass Co., Ltd.	Tokyo, Japan	Glazing,Fine chemical,Chemical engineering, ...[+2]	Patent: 37
94	Hitachi Cable Ltd.	Tokyo, Japan	Electronics,Metal,Optical fiber, ...[+2]	Patent: 37
95	Sanyo Chemical Industries, Ltd.	Kyoto, Japan	Chemical engineering,Polyurethane,Superabsorbent polymer, ...[+2]	Patent: 36
96	Tonen General Sekiyu KK	Chiba, Japan	Petroleum product,Petrochemical,Liquefied natural gas, ...[+2]	Patent: 36
97	Nihon Tsusho KK	Japan		Patent: 36
98	LINTEC Corp.	Tokyo, Japan	Adhesive materials,Industrial engineering,Pressure sensitive, ...[+2]	Patent: 35
99	Ajinomoto Co., Inc.	Tokyo, Japan	Seasoning,Amino acid,Food processing, ...[+2]	Patent: 34
100	Shin-Etsu Polymer Co., Ltd.	Tokyo, Japan	Semiconductor,Chemical engineering,Ductile iron pipe, ...[+2]	Patent: 34