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Japan Crown Cork Co Ltd.

USPTO Granted Patents = 60

CIPO Patents = 1

EPO Patents = 13

Forward Citations = 911

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74 inventors (with patents filed for the assignee):

Hidehiko Ohmi (11 out of 15 patents)

Kashiwa Murayama (11 out of 14 patents)

Tateo Kubo (10 out of 16 patents)

4. Mitsuo Kumata (9 out of 9 patents)

5. Junichi Itsubo (8 out of 9 patents)

6. Yuji Kano (6 out of 7 patents)

7. Fumio Mori (6 out of 29 patents)

8. Osamu Ishii (5 out of 17 patents)

9. Katsumi Hashimoto (4 out of 12 patents)

10. Hisashi Nakajima (4 out of 4 patents)

11. Seiji Fukushi (4 out of 4 patents)

12. Takashi Yazaki (4 out of 5 patents)

13. Tomoya Igarashi (4 out of 4 patents)

14. Takahiro Kurosawa (3 out of 13 patents)

15. Katsuhiro Muramoto (3 out of 3 patents)

Core Competencies:

Moisture-Absorbing Resin

Synthetic Resin Closure

Plastic Cap with IC Tag

Metallic Container Closure

Sealing Member

Tamper-Evident Cap

Injection-Forming Apparatus

Container Closure Mechanism

Compression Molding Apparatus

Heat-Resistant Liner

Pilfer-Proof Closure

Liquid Mixing Apparatus

60 patents: Sort by Forward Citations

1. 9205960 - Moisture-absorbing resin composition and molded product thereof (2015-12-08),

2. 8899442 - Synthetic resin spout stopper (2014-12-02),

3. 8866617 - Plastic cap with IC tag and method of attaching IC tag to the cap (2014-10-21),

4. 8833590 - Metallic container closure having internal pressure release function (2014-09-16),

5. 8469213 - Synthetic resin container closure (2013-06-25),

6. 8421632 - Plastic cap with IC tag and method of attaching IC tag to the cap (2013-04-16),

7. 8403186 - Composite spout and injection-forming apparatus for forming the composite spout (2013-03-26),

8. 8167161 - Metallic container closure having internal pressure release function (2012-05-01),

9. 7766539 - Apparatus for mixing liquids to form a liner material (2010-08-03),

10. 7607547 - Container cap (2009-10-27),

11. 7575121 - Plastic cap featuring excellent sealing and venting (2009-08-18),

12. 7014055 - Synthetic resin container closure (2006-03-21),

13. 6878449 - Sealing member for a cap featuring excellent safety and environmental friendliness, and metal cap (2005-04-12),

14. 6779672 - Synthetic resin container closure (2004-08-24),

15. 6695161 - Plastic container closure (2004-02-24),

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

60 Patents

#628 in Tokyo

#1,504 in Japan

#11,793 in the World

Japan Crown Cork Co Ltd.

Forward Citations = 911

74 inventors:

Hidehiko Ohmi (11 out of 15 patents)

Kashiwa Murayama (11 out of 14 patents)

Tateo Kubo (10 out of 16 patents)

4. Mitsuo Kumata (9 out of 9 patents)

5. Junichi Itsubo (8 out of 9 patents)

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