Last Updated: August 8, 2026

Details for Patent: 8,367,734

Name: Drug Patent Intelligence for US Patent 8367734
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

✉ Email this page to a colleague

« Back to Dashboard

Which drugs does patent 8,367,734 protect, and when does it expire?

Patent 8,367,734 protects PRIMATENE MIST and is included in one NDA.

Summary for Patent: 8,367,734

Title:	Stable epinephrine suspension formulation with high inhalation delivery efficiency
Abstract:	A stable suspension aerosol formulation of epinephrine is suitable for administration through inhalation comprising a therapeutically effective amount of epinephrine, hydrofluorocarbon propellant, co-solvent, surfactant, and antioxidant. The suspension aerosol formulation further comprises [pre-] pre-micronized epinephrine suspended in an alcohol/surfactant solution with hydrofluoroalkane propellant. The suspension formulation provides a highly efficient delivery of drug microparticles into the respirable region of patients' lungs and has the following advantages: lower dosage requirement, minimum alcohol content, with less impurities generated during storage, improved efficacy and safety, and exhibits no ozone depleting potential compared to a formulation containing chlorofluorocarbon.
Inventor(s):	Jianxin Gao, James Luo, Rong Zhou, Mary Ziping Luo, Jack Yongfeng Zhang
Assignee:	Amphastar Pharmaceuticals Inc
Application Number:	US12/776,338
Patent Claim Types: see list of patent claims	Formulation; Compound; Delivery; Dosage form;
Patent landscape, scope, and claims:	error: insufficient information More… ↓ ⤷ Start Trial

Drugs Protected by US Patent 8,367,734

Glossary

Subscribe to access the full database, or Start Trial
Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
Armstrong Pharms	PRIMATENE MIST	epinephrine	AEROSOL, METERED;INHALATION	205920-001	Nov 7, 2018		OTC	Yes	Yes	8,367,734	⤷ Start Trial	Y				⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.