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Rancho Cucamonga, CA, United States of America

Amphastar Pharmaceuticals, Inc.

USPTO Granted Patents = 25

% Expired Patents = 8.0

CIPO Patents = 3

EPO Patents = 5

Trademarks = 13

Forward Citations = 187

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45 inventors (with patents filed for the assignee):

Jack Yongfeng Zhang (18 out of 24 patents)

Mary Ziping Luo (9 out of 17 patents)

Mary Zi-Ping Luo (6 out of 6 patents)

4. Frank Zhishi Xia (5 out of 9 patents)

5. Aili Bo (4 out of 5 patents)

6. Jie Fei Ding (4 out of 4 patents)

7. Jeffrey Ding (3 out of 4 patents)

8. Rong Zhou (3 out of 3 patents)

9. Mary Zi-ping Luo (3 out of 3 patents)

10. Ying Wang (3 out of 3 patents)

11. Ray Lameng Lei (3 out of 3 patents)

12. Yonggang Xu (2 out of 5 patents)

13. Song Chen (2 out of 12 patents)

14. Haoning Zhang (2 out of 12 patents)

15. Sankaram B Mantripragada (2 out of 7 patents)

25 patents: Sort by Forward Citations

1. 12642779 - Albuterol aerosol suspension formulation for oral inhalation with high amount of green propellant hydrofluoroolefin (HFO) and free of co-solvent (2026-06-02),

2. 12564562 - Injectable epinephrine formulations demonstrating stability over time (2026-03-03),

3. 12508229 - METHOD FOR PREPARING STABLE PEPTIDE FORMULATIONS (2025-12-30),

4. 12496272 - Stable epinephrine suspension formulation for inhalation with HFO propellant (2025-12-16),

5. 12383516 - Albuterol aerosol suspension formulation for oral inhalation with high amount of green propellant hydrofluoroolefin (HFO) and free of co-solvent (2025-08-12),

6. 12370241 - Nasal powder formulation for treatment of hypoglycemia (2025-07-29),

7. 12226456 - Nasal powder formulation for treatment of hypoglycemia (2025-02-18),

8. 11938089 - Medication delivery systems and methods (2024-03-26),

9. 11726049 - Small angle x-ray scattering methods for characterizing the iron core of iron carbohydrate colloid drug products (2023-08-15),

10. 11524987 - Highly purified recombinant human insulin (RHI) API and methods of producing the same (2022-12-13),

11. 10406210 - High-purity inhalable particles of insulin and insulin analogues, and high-efficiency methods of manufacturing the same (2019-09-10),

12. 10322168 - High-purity inhalable particles of insulin and insulin analogues, and high-efficiency methods of manufacturing the same (2019-06-18),

13. 10287249 - Methods of resolving racemic mixture to obtain (−)-huperzine A (2019-05-14),

14. 10258573 - Micronized insulin and micronized insulin analogues prepared under acidic conditions, and methods of manufacturing the same under acidic conditions (2019-04-16),

15. 9873712 - Method of purifying idraparinux sodium (2018-01-23),

Amphastar Pharmaceuticals, Inc. is a specialty pharmaceutical company that focuses on the development, manufacturing, and marketing of generic and proprietary injectable and inhalation products. They are dedicated to providing high-quality, cost-effective solutions to meet various healthcare needs. With a diverse product portfolio, Amphastar aims to improve patient outcomes and enhance the overall healthcare system.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

25 Patents

#7 in Rancho Cucamonga, CA

#3,150 in California

#13,334 in US

#25,651 in the World

Rancho Cucamonga, CA, United States of America

Amphastar Pharmaceuticals, Inc.

Forward Citations = 187

45 inventors:

Jack Yongfeng Zhang (18 out of 24 patents)

Mary Ziping Luo (9 out of 17 patents)

Mary Zi-Ping Luo (6 out of 6 patents)

4. Frank Zhishi Xia (5 out of 9 patents)

5. Aili Bo (4 out of 5 patents)

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