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For the Inventor, By the Inventor

Arvada, CO, United States of America

Eddie C Chou

This inventor holds 16 USPTO granted patents, primarily in Metal Recovery Processes. Top assignee: Amax Incorporated. Active years: 1976-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eddie C Chou. Retrieved from https://idiyas.com/inventor/eddie-c-chou

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

Calculating rank
USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 7

Forward Citations = 124(Granted Patents)


Company Filing History:

goldMedal16 out of 207 
 
Amax Incorporated
 patents

Years Active: 1976-1990

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Areas of Expertise:
Nickel Recovery
Cobalt Extraction
Selenium Removal
Cadmium Sulfide
Ion-Exchange
Solvent Extraction
Leaching Techniques
High Surface Area Powder
Laterite Ore Treatment
Hydrogen Reduction
Atmospheric Leach
Chromium Recovery
16 patents (USPTO):Explore Patents
1. 4963336 - Purification of APT (1990-10-16),
2. 4917726 - Chromium recovery process (1990-04-17),
3. 4900522 - Separation of nickel and cobalt from sulfate solutions by solvent (1990-02-13),
4. 4810303 - Production of hexagonal cadmium sulfide pigment (1989-03-07),
5. 4761177 - Production of cobalt and nickel powder (1988-08-02),
6. 4758266 - Production of high surface area nickel powder (1988-07-19),
7. 4600435 - Solvent extraction of cobalt (II) from sulfate solutions with cobalt (1986-07-15),
8. 4545814 - Production of cobalt and nickel powder (1985-10-08),
9. 4544541 - Removal of hexavalent selenium from nickel, cobalt or copper sulfate (1985-10-01),
10. 4100043 - Atmospheric leach ion-exchange process for treating iron-containing (1978-07-11),
11. 4097575 - Roast-neutralization-leach technique for the treatment of laterite ore (1978-06-27),
12. 4094754 - Leaching of Ni-Cu-Fe-S matte (1978-06-13),
13. 4044096 - Sulfuric acid leaching of nickeliferous laterite (1977-08-23),
14. 3991159 - High temperature neutralization of laterite leach slurry (1976-11-09),
15. 3989509 - Catalytic hydrogen reduction of metals from solutions (1976-11-02),

Title: **Eddie C. Chou: Innovator in Tungsten Purification and Chromium Recovery**

Introduction

Eddie C. Chou, a prolific inventor based in Arvada, Colorado, has significantly contributed to the fields of materials processing and waste management. With a remarkable portfolio of 16 patents, Chou has demonstrated his expertise in innovative solutions for enhancing the purity of tungsten products and recovering valuable materials from waste.

Latest Patents

Chou's latest inventions include a process for the purification of ammonium paratungstate (APT), aimed at producing tungsten products of enhanced purity. This process stands out due to its efficiency, requiring a minimal number of processing steps. It involves mixing APT with an ammonium solution and autoclaving the mixture above its boiling point to dissolve the APT. The subsequent recrystallization from the solution results in an APT product that boasts improved marketability.

Another significant patent by Chou pertains to a chromium recovery process from waste materials containing chromium, such as sludge from metal cleaning and plating operations. This innovative approach stabilizes the materials through heating at temperatures exceeding 700°C for safe disposal. Additionally, it enables the recovery of chromium content by activating the waste via heating to temperatures between 400°C and 500°C, followed by thermite reduction.

Career Highlights

Chou is affiliated with Amax Incorporated, where he has applied his innovative thinking to foster advancements in material processing. His patents reflect a commitment to not only finding technological solutions but also addressing environmental concerns associated with industrial waste.

Collaborations

Throughout his career, Chou has worked alongside esteemed colleagues including Leo W. Beckstead and Paul B. Queneau. This collaboration has undoubtedly fueled a creative exchange of ideas and innovations, driving the success of their various projects.

Conclusion

Eddie C. Chou exemplifies the spirit of innovation in his work on tungsten purification and chromium recovery processes. His contributions not only foster advancements in efficiency and marketability but also address pivotal environmental challenges. As an accomplished inventor, Chou's impact continues to resonate within the industry, paving the way for future developments.

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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