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Lead Chemical Company, Limited

USPTO Granted Patents = 18

CIPO Patents = 23

EPO Patents = 10

Trademarks = 1

Forward Citations = 71

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50 inventors (with patents filed for the assignee):

Masao Mori (8 out of 10 patents)

Haruo Saito (5 out of 5 patents)

Seijiro Yama (4 out of 5 patents)

4. Tamaki Horiuchi (4 out of 4 patents)

5. Hideo Nemoto (3 out of 3 patents)

6. Takayasu Matsuzawa (3 out of 3 patents)

7. Atsushi Nishida (2 out of 6 patents)

8. Naoki Murai (2 out of 3 patents)

9. Masao Hattori (2 out of 11 patents)

10. Sunao Takeuchi (2 out of 2 patents)

11. Masako Nakagawa (2 out of 2 patents)

12. Eiichi Yoshii (2 out of 2 patents)

13. Yuji Matsuya (1 out of 1 patent)

14. Kenji Toda (1 out of 9 patents)

15. Tadashi Ishigaki (1 out of 2 patents)

18 patents: Sort by Forward Citations

1. 11491116 - Adhesive patch (2022-11-08),

2. 8841284 - Compound having neurite-outgrowing activity (2014-09-23),

3. 8734680 - Silicate-based phosphor and manufacturing method of silicate-based phosphor (2014-05-27),

4. 8568770 - Adhesive material containing 5-methyl-1-phenyl-2-(1H)-pyridone (2013-10-29),

5. 8551979 - Nonaqueous preparation for percutaneous absorption containing nonsteroidal anti-inflammatory analgesic (2013-10-08),

6. 8287900 - Medicated patch comprising 5-methyl-1-phenyl-2-(1H)-pyridone (2012-10-16),

7. 8252273 - Ultraviolet absorber (2012-08-28),

8. 8076368 - Percutaneous absorption type cerebral protective agent (2011-12-13),

9. 7662852 - Compounds and preparations having antiviral effect (2010-02-16),

10. 7361785 - Compound protecting against ultraviolet rays (2008-04-22),

11. 7265229 - Method for synthesizing macrosphelides (2007-09-04),

12. 7164054 - Liner for patch (2007-01-16),

13. 6358984 - 2,4-dioxopyrrolidine and 2,4-dioxotetrahydrofuran derivatives and medicines containing the same as the active ingredient (2002-03-19),

14. 6348484 - Stereoisomeric indole compounds, process for the preparation of the same, and use thereof (2002-02-19),

15. 6268395 - Phorbol derivatives having antivirus activity (2001-07-31),

Lead Chemical Company, Limited is a global leader in the manufacturing and distribution of chemical products. With over 50 years of industry experience, we offer a wide range of high-quality chemicals for various applications. From industrial chemicals to specialty chemicals, we cater to diverse industries including pharmaceuticals, healthcare, agriculture, and more. Our commitment to innovation, sustainability, and customer satisfaction has earned us a strong reputation and trusted partnerships internationally.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

18 Patents

#1,227 in Tokyo

#3,052 in Japan

#33,147 in the World

Lead Chemical Company, Limited

Forward Citations = 71

50 inventors:

Masao Mori (8 out of 10 patents)

Haruo Saito (5 out of 5 patents)

Seijiro Yama (4 out of 5 patents)

4. Tamaki Horiuchi (4 out of 4 patents)

5. Hideo Nemoto (3 out of 3 patents)

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