% Expired Patents = 66.7

Forward Citations = 21

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12 inventors (with patents filed for the assignee):

Masahiro Murakami (4 out of 23 patents)

Mikio Watanabe (2 out of 129 patents)

Jiro Takano (2 out of 2 patents)

4. Yoshimi Ishihara (2 out of 2 patents)

5. Kanji Takada (1 out of 8 patents)

6. Shigeo Takada (1 out of 1 patent)

7. Yasukazu Nagato (1 out of 1 patent)

8. Izumi Fukuda (1 out of 1 patent)

9. Kengo Omachi (1 out of 1 patent)

10. Teruyuki Sameshima (1 out of 1 patent)

11. Kenichi Yoshida (1 out of 9 patents)

12. Etsunosuke Noda (1 out of 4 patents)

6 patents: Sort by Forward Citations

1. 6890547 - Glycyrrhizin preparations for transmucosal absorption (2005-05-10),

2. 6861538 - Process for the preparation of cyclic lactic acid oligomer (2005-03-01),

3. 6825314 - Process for the preparation of cyclic lactic acid oligomers (2004-11-30),

4. 6734214 - Remedies for diabetes (2004-05-11),

5. 6270789 - Base for suppository (2001-08-07),

6. 5489576 - Therapeutic agent for hemorrhoidal diseases (1996-02-06),

Company Overview

Amato Pharmaceutical Products, Ltd. is a leading pharmaceutical company specializing in the research, development, and marketing of innovative healthcare products. With a commitment to improving the quality of life for patients worldwide, Amato offers a wide range of pharmaceuticals and medical supplies. Their products are trusted by healthcare professionals and patients alike for their safety, efficacy, and reliability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#165 in Kyoto 615-0031

#5,990 in Japan

Kyoto, Japan

Amato Pharmaceutical Products, Ltd.

Forward Citations = 21

12 inventors:

Masahiro Murakami (4 out of 23 patents)

Mikio Watanabe (2 out of 129 patents)

Jiro Takano (2 out of 2 patents)

4. Yoshimi Ishihara (2 out of 2 patents)

5. Kanji Takada (1 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Amato Pharmaceutical Products, Ltd.. Retrieved from https://idiyas.com/company/amato-pharmaceutical-products

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]