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For the Inventor, By the Inventor

Brantford, Canada

Zhi-Xian Wang

This inventor holds 15 USPTO granted patents. Top assignees: Apotex Pharmachem Inc., Brantford Chemicals Inc.. Active years: 2002-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Zhi-Xian Wang. Retrieved from https://idiyas.com/inventor/zhi-xian-wang

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 15

% Patents Active = 6.7

Average Co-Inventor Count = 3.4

ph-index = 2

Forward Citations = 14(Granted Patents)


Location History:

  • Brantford, CA (2002 - 2011)
  • Tianjin, CN (2011 - 2013)

Company Filing History:

goldMedal12 out of 50 
 
Apotex Pharmachem Inc.
 patents
silverMedal3 out of 23 
 
Brantford Chemicals Inc.
 patents

Years Active: 2002-2013

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15 patents (USPTO):Explore Patents
1. 8378143 - Methods of making Efavirens and intermediates thereof (2013-02-19),
2. 8143400 - Process for the preparation and purification of cis-2-methylspiro(1,3-oxathiolane-5,3')quiniclidine hydrochloride (2012-03-27),
3. 8080663 - Process for the preparation of 2-methylspiro(1,3-oxathiolane-5,3')quiniclidine (2011-12-20),
4. 8080655 - Methods of making efavirenz and intermediates thereof (2011-12-20),
5. 7939665 - Efficient process for the preparation of cabergoline and its intermediates (2011-05-10),
6. 7902380 - [object Object] (2011-03-08),
7. 7884121 - Process for the preparation of phenylcarbamates (2011-02-08),
8. 7767843 - Process for the preparation of phenylcarbamates (2010-08-03),
9. 7531658 - Process for the preparation of 17-N-substituted-carbamoyl-4-aza-androst-1-en-3-ones (2009-05-12),
10. 7485754 - Efficient method for preparing 3-aryloxy-3-arylpropylamines and their optical stereoisomers (2009-02-03),
11. 7365201 - Process for the preparation of the boron difluoride chelate of quinolone-3-carboxylic acid (2008-04-29),
12. 7196197 - Process for the preparation of Flecainide, its pharmaceutically acceptable salts and important intermediates thereof (2007-03-27),
13. 6642384 - Preparation of chiral 1,2,3,4-tetrahydro-6,7-dialkoxy-3-isoquinolinecarboxylic acid and derivatives (2003-11-04),
14. 6600044 - Process for recovery of the desired cis-1,3-oxathiolane nucleosides from their undesired trans-isomers (2003-07-29),
15. 6407262 - Process for the preparation of Ramipril (2002-06-18),

Title: Innovations and Contributions of Inventor Zhi-Xian Wang

Introduction

Zhi-Xian Wang is a notable inventor based in Brantford, Canada. He has made significant contributions to the field of pharmaceuticals, holding a total of 15 patents. His work primarily focuses on the development of processes for the preparation of various chemical compounds.

Latest Patents

Among his latest patents is a method for making Efavirenz, a crucial compound in the treatment of HIV. This invention outlines a process that involves cyclizing a specific compound in the presence of a first base, leading to the efficient preparation of Efavirenz. Another significant patent details an industrially acceptable process for the preparation and purification of cis-2-methylspiro(1,3-oxathiolane-5,3')quiniclidine hydrochloride. This process enhances the purification of the cis-isomer from a mixture of isomers, utilizing organic sulfonic acids to generate less soluble acid addition salts.

Career Highlights

Zhi-Xian Wang has worked with prominent companies in the pharmaceutical industry, including Apotex Pharmachem Inc. and Brantford Chemicals Inc. His experience in these organizations has contributed to his expertise in chemical processes and patent development.

Collaborations

Throughout his career, Zhi-Xian Wang has collaborated with notable professionals such as Bhaskar Reddy Guntoori and Stephen E. Horne. These collaborations have further enriched his work and innovations in the field.

Conclusion

Zhi-Xian Wang's contributions to pharmaceutical innovations and his extensive patent portfolio highlight his significant role as an inventor. His work continues to impact the industry positively, showcasing the importance of innovation in healthcare.

Profile summary based on public USPTO records.
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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