Forward Citations = 0

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4 inventors (with patents filed for the assignee):

Song Chen (1 out of 12 patents)

Haoning Zhang (1 out of 12 patents)

Yinhua Qiu (1 out of 2 patents)

4. Zhengyuan Wu (1 out of 2 patents)

1 patent: Sort by Forward Citations

1. 9447067 - Method of preparing intermediate of salmeterol (2016-09-20),

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USPTO Data Jan 1 1976 - Oct 13 2026

1 Patents

#60 in Rancho Cucamonga, CA

#29,047 in California

#136,844 in US

Rancho Cucamonga, CA, United States of America

Amphastar Pahmaceuticals, Inc.

Forward Citations = 0

4 inventors:

Song Chen (1 out of 12 patents)

Haoning Zhang (1 out of 12 patents)

Yinhua Qiu (1 out of 2 patents)

4. Zhengyuan Wu (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Amphastar Pahmaceuticals, Inc.. Retrieved from https://idiyas.com/company/amphastar-pahmaceuticals

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]