% Expired Patents = 25.0

Forward Citations = 171

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3 inventors (with patents filed for the assignee):

Kamal K Midha (4 out of 12 patents)

Martin H Teicher (3 out of 19 patents)

Vijai Kumar (2 out of 17 patents)

4 patents: Sort by Forward Citations

1. 6555136 - Pharmaceutical dosage form for pulsatile delivery of methylphenidate (2003-04-29),

2. 6395752 - Method of treating depression using 1-threo-methylphenidate (2002-05-28),

3. 6217904 - Pharmaceutical dosage form for pulsatile delivery of d-threo-methylphenidate and a second CNS stimulant (2001-04-17),

4. 6127385 - Method of treating depression using l-threo-methylphenidate (2000-10-03),

Company Overview

Pharmaquest Limited is a leading pharmaceutical company that specializes in the research, development, and marketing of innovative drugs and healthcare products. With a focus on delivering high-quality and cost-effective medications, Pharmaquest Limited is dedicated to improving the health and well-being of patients worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#61 in Hamilton

#73 in Bermuda

Hamilton, Bermuda

Pharmaquest Limited

Forward Citations = 171

3 inventors:

Kamal K Midha (4 out of 12 patents)

Martin H Teicher (3 out of 19 patents)

Vijai Kumar (2 out of 17 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pharmaquest Limited. Retrieved from https://idiyas.com/company/pharmaquest

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]