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For the Inventor, By the Inventor

Philadelphia, PA, United States of America

Tsoung-Yuan Yan

This inventor holds 63 USPTO granted patents, primarily in Uranium Recovery (CPC class 208 ). Top assignees: Mobil Oil Corporation, Mobil Oil Co. Active years: 1976-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsoung-Yuan Yan. Retrieved from https://idiyas.com/inventor/tsoung-yuan-yan

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

USPTO Granted Patents = 63

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 19

Forward Citations = 932(Granted Patents)

Forward Citations (Not Self Cited) = 910(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Trenton, NJ (US) (1976 - 1977)
  • Philadelphia, PA (US) (1977 - 1991)

Company Filing History:

goldMedal62 out of 5,942 
 
Mobil Oil Corporation
 patents
silverMedal1 out of 18 
 
Mobil Oil Co
 patents

Years Active: 1976-1991

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Areas of Expertise:
Uranium Recovery
Hydroprocessing
Heavy Oils
Ion Exchange Resins
In Situ Leaching
Dewaxing Process
Solid Fuels
Catalyst
Synthetic Crude
Coal Liquefaction
Contaminant Precipitation
Electrode Binder
63 patents (USPTO):Explore Patents
1. 4994172 - Pipelineable syncrude (synthetic crude) from heavy oil (1991-02-19),
2. 4582595 - Process for hydroprocessing heavy oils utilizing sepiolite-based (1986-04-15),
3. 4544479 - Recovery of metal values from petroleum residua and other fractions (1985-10-01),
4. 4529408 - Pumpable solid fuels for small furnace (1985-07-16),
5. 4524231 - Production of durene from alcohols and ethers (1985-06-18),
6. 4524228 - Production of durene and gasoline from synthesis gas (1985-06-18),
7. 4524227 - Coproduction of durene and gasoline from synthesis gas and alcohols and (1985-06-18),
8. 4495152 - Leach apparatus including means to protect ion exchange resin (1985-01-22),
9. 4478709 - Process for stabilizing dewaxed distillate oils (1984-10-23),
10. 4474408 - Method for removing ammonium ions from a subterranean formation (1984-10-02),
11. 4469807 - Catalyst and process for hydroprocessing heavy oils (1984-09-04),
12. 4464345 - Method of precipitating contaminants in a uranium leachate using ferri (1984-08-07),
13. 4458033 - Regeneration of cationic resin in nonaqueous media (1984-07-03),
14. 4452490 - Treatment of subterranean uranium-bearing formations (1984-06-05),
15. 4447311 - Dewaxing process (1984-05-08),

Title: Tsoung-Yuan Yan: Innovator in Heavy Oil Processing

Introduction

Tsoung-Yuan Yan, based in Philadelphia, PA, is a renowned inventor with an impressive portfolio of 63 patents. His contributions to the field of heavy oil processing and hydroprocessing techniques have established him as a significant figure in the petroleum industry.

Latest Patents

Among his latest innovations are two notable patents:

1. **Pipelineable Syncrude from Heavy Oil** - This patent details a groundbreaking process for preparing pipelineable oil from heavy crude oil. The method involves thermally treating the oil without added hydrogen, creating an upgraded, low-viscosity oil phase and a liquid asphalt phase that contains dispersed coke. The efficient separation of these phases is achieved solely through gravity settling, enabling adaptation for field use with skid-mounted units. This innovative approach also ensures that sufficient asphalt is generated to produce steam necessary for heavy crude oil production.

2. **Process for Hydroprocessing Heavy Oils Utilizing Sepiolite-Based Catalyst** - This patent introduces a catalyst that is ion exchanged with various metals and used in hydroprocessing hydrocarbon feedstocks. The composition also allows for the integration of high silica/alumina ratio zeolites, such as sodium ZSM-5, enhancing the removal of metals during processing.

Career Highlights

Tsoung-Yuan Yan has made significant strides in his career, notably during his tenure at Mobil Oil Corporation. His work there focused on advancing technologies that significantly impact the efficiency and effectiveness of oil processing techniques. His expertise in heavy oil processing has been recognized and leveraged to create practical applications in the industry.

Collaborations

Throughout his career, Yan has collaborated with notable individuals in the field, including Wilton F. Espenscheid and Costandi A. Audeh. These collaborations have contributed to the development of innovative solutions for the challenges faced in oil processing.

Conclusion

Tsoung-Yuan Yan's contributions to heavy oil processing demonstrate his ingenuity and commitment to innovation. His patents not only improve the efficiency of oil recovery but also pave the way for sustainable practices in the petroleum industry. His legacy as an inventor and innovator continues to influence the field and inspires others to pursue advancements in energy technology.

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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