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Quarrymen&co. Inc.

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USPTO Granted Patents = 8

EPO Patents = 2

Forward Citations = 3

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6 inventors (with patents filed for the assignee):

Yasuhiro Yamashita (6 out of 19 patents)

Ken Hatano (4 out of 8 patents)

Miho Suzuki (4 out of 5 patents)

4. Shojiro Yoshida (4 out of 4 patents)

5. Minoru Ueda (2 out of 36 patents)

6. Hiroshi Hochi (1 out of 1 patent)

7. Minoru Ueda (16 patents)

8 patents: Sort by Forward Citations

1. 11510987 - Endocytosis enhancer for drug delivery system (2022-11-29),

2. 11160877 - Capsule for drug delivery systems of targeted tissue-specific delivery type using carbosilane dendrimer (2021-11-02),

3. 11015171 - Immortalized stem cells and method for producing same (2021-05-25),

4. 10918726 - Carbosilane dendrimer and aggregatable carrier obtained using said dendrimer for drug delivery system (2021-02-16),

5. 10772973 - Targeted shell for use in drug delivery system utilizing carbosilane dendrimer (2020-09-15),

6. 10668261 - Sheet-like piece, sheet for promoting hair growth comprising sheet-like piece, and whitening and wrinkle ameliorating agent comprising sheet-like piece (2020-06-02),

7. 10639355 - Method of making conditioned medium from immortalized dental pulp stem cells (2020-05-05),

8. 10494606 - Immortalized stem cell, compositions, preparations and uses thereof (2019-12-03),

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

8 Patents

#2,152 in Tokyo

#5,050 in Japan

Quarrymen&co. Inc.

Forward Citations = 3

6 inventors:

Yasuhiro Yamashita (6 out of 19 patents)

Ken Hatano (4 out of 8 patents)

Miho Suzuki (4 out of 5 patents)

4. Shojiro Yoshida (4 out of 4 patents)

5. Minoru Ueda (2 out of 36 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Quarrymen&co. Inc.. Retrieved from https://idiyas.com/company/quarrymen-and-company

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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