Forward Citations = 274

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8 inventors (with patents filed for the assignee):

Fu-Ming Lee (12 out of 37 patents)

Wiston Lamshing (6 out of 6 patents)

Randi W Wytcherley (4 out of 13 patents)

4. Joseph C Gentry (3 out of 31 patents)

5. Ronald G Gualy (1 out of 2 patents)

6. Randa W Wytcherley (1 out of 4 patents)

7. Wei-Teh Wade Shang (1 out of 2 patents)

8. Stephen G Norwood (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 6375802 - Method of retrofitting existing equipment for an improved aromatics separation process (2002-04-23),

2. 6180827 - Recovery of acrylic acid from process or waste water streams (2001-01-30),

3. 6140534 - Method for purifying isophthalic acid prepared from metaxylene (2000-10-31),

4. 6113866 - Apparatus for preparing purified terephthalic acid (2000-09-05),

5. 6054610 - Method and apparatus for preparing purified terephthalic acid and (2000-04-25),

6. 6013835 - Method and apparatus for preparing purified terephthalic acid (2000-01-11),

7. 6005157 - Cycloparaffin purification from petroleum streams (1999-12-21),

8. 5961935 - Method and apparatus for preparing purified terephthalic acid (1999-10-05),

9. 5929274 - Method to reduce carboxybenzaldehyde isomers in terephthalic acid or (1999-07-27),

10. 5877385 - Process including extractive distillation and/or dehydrogenation to (1999-03-02),

11. 5849982 - Recovery of styrene from pyrolysis gasoline by extractive distillation (1998-12-15),

12. 5840968 - Method and apparatus for preparing purified terephthalic acid (1998-11-24),

Company Overview

Hfm International, Inc., based in Houston, TX, specializes in providing advanced solutions for the oil and gas industry. The company focuses on the development and manufacturing of innovative equipment and technologies that enhance operational efficiency and safety in energy production. With a commitment to research and development, Hfm International is dedicated to addressing the evolving challenges in the energy sector, ensuring sustainable practices while optimizing performance across various applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

12 Patents

#416 in Houston, TX

#1,591 in Texas

#25,557 in US

#48,163 in the World

Houston, TX, United States of America

Hfm International, Inc.

Forward Citations = 274

8 inventors:

Fu-Ming Lee (12 out of 37 patents)

Wiston Lamshing (6 out of 6 patents)

Randi W Wytcherley (4 out of 13 patents)

4. Joseph C Gentry (3 out of 31 patents)

5. Ronald G Gualy (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hfm International, Inc.. Retrieved from https://idiyas.com/company/hfm-international

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]