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For the Inventor, By the Inventor

Houston, TX, United States of America

Sze-Foo Chien

This inventor holds 13 USPTO granted patents. Top assignees: Texaco Inc., Other. Active years: 1978-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sze-Foo Chien. Retrieved from https://idiyas.com/inventor/sze-foo-chien

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

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 8

Forward Citations = 261(Granted Patents)


Company Filing History:

goldMedal12 out of 3,161 
 
Texaco Inc.
 patents
silverMedal1 out of 834,513 
Other
 patents

Years Active: 1978-1995

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13 patents (USPTO):Explore Patents
1. 5421209 - Measurement of steam quality and mass flow rate (1995-06-06),
2. 5404745 - Method and apparatus for determining steam quality from steam velocity (1995-04-11),
3. 5214956 - Method and apparatus for determining steam quality by measuring the (1993-06-01),
4. 5182939 - Method for determination of average downhole steam quality by measuring (1993-02-02),
5. 5141055 - Method and apparatus for controlling the mass flow rate of steam in (1992-08-25),
6. 5092159 - Method and apparatus utilizing a single nozzle for effecting measurment (1992-03-03),
7. 5035146 - Method and apparatus for determining steam quality and/or flow rate from (1991-07-30),
8. 4849988 - Apparatus and method for measuring the quality of steam (1989-07-18),
9. 4836032 - Method of determining the quality of steam for stimulating hydrocarbon (1989-06-06),
10. 4681466 - Method for determining quality of reduced quality steam (1987-07-21),
11. 4577691 - Method and apparatus for producing viscous hydrocarbons from a (1986-03-25),
12. 4126182 - Method for decreasing resistance to flow of crude oil up from a well or (1978-11-21),
13. 4100967 - System for decreasing resistance to flow of crude oil up from a well or (1978-07-18),

Title: **Innovator Spotlight: Sze-Foo Chien – A Pioneer in Steam Measurement Technologies**

Introduction

Sze-Foo Chien is an accomplished inventor based in Houston, TX, with an impressive portfolio of 13 patents to her name. Her innovations primarily focus on steam measurement technologies, showcasing her expertise in providing crucial solutions for industrial applications.

Latest Patents

Among her notable patents, Chien's recent work includes the "Measurement of Steam Quality and Mass Flow Rate." This apparatus and method allow for the concurrent determination of steam flow rate and quality through a conduit featuring an orifice plate positioned in series with a critical flow venturi. The pressure sensing means within the conduit effectively senses the pressures and applies them in a formula to deliver desired steam values. This method is particularly valuable in scenarios involving steam flow where maintaining a minimal decrease in steam pressure across the measuring instrument is critical.

Another significant innovation is her "Method and Apparatus for Determining Steam Quality from Steam Velocity." This invention enables the determination and monitoring of steam quality by measuring the critical velocity of steam flowing through a nozzle. Chien's contributions are vital in enhancing the accuracy and efficiency of steam measurement processes.

Career Highlights

Throughout her career, Sze-Foo Chien has worked with prominent companies, including Texaco Inc., where she honed her skills and collaborated with other experts in her field. Her inventive spirit and dedication to improving steam measurement technology have positioned her as a notable figure in engineering.

Collaborations

Chien has had the pleasure of working alongside talented individuals such as Clifford L. Redus and Peter L. Sigwardt. These collaborations have allowed her to combine ideas and enhance her patent work, leading to innovative advancements in steam measurement technologies.

Conclusion

Sze-Foo Chien's contributions to the field of steam measurement are substantial, with her patents representing significant advancements in the industry. Her dedication to innovation and collaboration highlights her role as a pioneering inventor committed to enhancing steam flow measurement and quality assessment.

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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