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Keisei Rose Nurseries, Inc.

USPTO Granted Patents = 45

Forward Citations = 213

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16 inventors (with patents filed for the assignee):

Shinya Miyano (23 out of 26 patents)

Kazunari Iwaki (18 out of 54 patents)

Takuro Ishihara (12 out of 32 patents)

4. Kiyoshi Miyazaki (8 out of 112 patents)

5. Shunsuke Takeuchi (8 out of 9 patents)

6. Hiroshi Hirabayashi (7 out of 7 patents)

7. Rieko Suwa (4 out of 4 patents)

8. Susumu Matsubara (4 out of 4 patents)

9. Kenichi Suzuki (3 out of 25 patents)

10. Shinzo Tsuda (3 out of 3 patents)

11. Ushio Sakazaki (2 out of 158 patents)

12. Yuji Tamura (2 out of 12 patents)

13. Yasuko Isobe (1 out of 35 patents)

14. Yukihiro Ikeda (1 out of 5 patents)

15. Takeshi Kanaya (1 out of 80 patents)

Core Competencies:

Horticultural Genetics

Rose Varieties

Petunia Breeding

Antirrhinum Cultivation

Hybrid Tea Roses

Unique Plant Names

Plant Breeding

Floral Genetics

New Varieties

Plant Patent

Flower Cultivation

Genetic Modification

45 patents: Sort by Forward Citations

1. PP37071 - plant named 'Keipebbcmam' (2025-10-28),

2. PP35999 - plant named 'Keipemokohos' (2024-07-09),

3. PP35250 - plant named 'Keipehabham' (2023-07-05),

4. PP35086 - plant named 'Keipekumehus' (2023-04-05),

5. PP25324 - plant named 'Keianpinetum' (2015-03-03),

6. PP25240 - plant named 'Keisurflipinas' (2015-01-20),

7. PP25147 - plant named 'Keisurfputem' (2014-12-02),

8. PP25122 - plant named 'Keisurfbripitos' (2014-11-25),

9. PP24453 - plant named 'Sunsurfsirou' (2014-05-13),

10. PP22839 - plant named 'Keisurfhopises' (2012-07-03),

11. PP22838 - plant named 'Keisurfpusos' (2012-07-03),

12. PP21199 - Rose plant named 'Keishisutoki' (2010-08-17),

13. PP19509 - Hybrid Tea Rose Plant named 'Keihaburu' (2008-12-02),

14. PP19091 - Antirrhinum plant named 'Keianmomorom' (2008-08-12),

15. PP19088 - Antirrhinum plant named 'Keianichigorum' (2008-08-12),

Company Overview

Keisei Rose Nurseries, Inc., based in Tokyo, specializes in the cultivation and hybridization of ornamental plants, particularly renowned for its innovative hybrid tea roses. The company is committed to advancing horticultural practices and developing unique plant varieties, including Antirrhinum and Petunia plants. With a focus on enhancing floral aesthetics and resilience, Keisei Rose Nurseries plays a significant role in the global horticultural industry, contributing to both commercial and private gardening sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

45 Patents

#848 in Tokyo

#1,829 in Japan

#15,436 in the World

Keisei Rose Nurseries, Inc.

Forward Citations = 213

16 inventors:

Shinya Miyano (23 out of 26 patents)

Kazunari Iwaki (18 out of 54 patents)

Takuro Ishihara (12 out of 32 patents)

4. Kiyoshi Miyazaki (8 out of 112 patents)

5. Shunsuke Takeuchi (8 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Keisei Rose Nurseries, Inc.. Retrieved from https://idiyas.com/company/keisei-rose-nurseries

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]

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