For the Inventor, By the Inventor

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Oxnard, CA, United States of America

Clean Diesel Technologies, Inc.

Calculating rank

USPTO Granted Patents = 48

% Expired Patents = 50.0

CIPO Patents = 2

EPO Patents = 5

Forward Citations = 1,139

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25 inventors (with patents filed for the assignee):

Zahra Nazarpoor (19 out of 31 patents)

Stephen J Golden (16 out of 44 patents)

James M Valentine (13 out of 39 patents)

4. Jeremy D Peter-Hoblyn (12 out of 24 patents)

5. Randal L Hatfield (7 out of 11 patents)

6. Johnny T Ngo (7 out of 14 patents)

7. Theodore J Tarabulski (7 out of 13 patents)

8. John E Hofmann (4 out of 12 patents)

9. Eric N Balles (4 out of 4 patents)

10. Barry N Sprague (3 out of 27 patents)

11. Michiel Makkee (2 out of 4 patents)

12. Krishna Kamasamudram (2 out of 28 patents)

13. Edward J Lee (2 out of 2 patents)

14. Sen Kitazumi (2 out of 2 patents)

15. Jason D Pless (2 out of 2 patents)

Core Competencies:

Three-Way Catalyst

Zero-PGM Catalysts

NOx Emissions

Catalyst Systems

Diesel Particulate Control

Synergized PGM

Oxidation Catalysts

Fuel Additive Dosing

Lean-Burn Engine

Thermal Stability

Emission Reduction

Microbial Catalyst

48 patents: Sort by Forward Citations

1. 9861964 - Enhanced catalytic activity at the stoichiometric condition of zero-PGM catalysts for TWC applications (2018-01-09),

2. 9731279 - Thermal stability of copper-manganese spinel as Zero PGM catalyst for TWC application (2017-08-15),

3. 9610570 - Methods and processes of coating zero-PGM catalysts including with Cu, Mn, Fe for TWC applications (2017-04-04),

4. 9604175 - Three-way catalyst systems including Nb—Zr—Al-mixed oxide supports, Ba—Pd, and Rh—Fe material compositions (2017-03-28),

5. 9579604 - Base metal activated rhodium coatings for catalysts in three-way catalyst (TWC) applications (2017-02-28),

6. 9555400 - Synergized PGM catalyst systems including platinum for TWC application (2017-01-31),

7. 9545626 - Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate (2017-01-17),

8. 9517449 - Optimization of washcoat adhesion of zero-PGM catalyst on metallic substrates (2016-12-13),

9. 9511358 - Spinel compositions and applications thereof (2016-12-06),

10. 9486784 - Thermally stable compositions of OSM free of rare earth metals (2016-11-08),

11. 9475005 - Three-way catalyst systems including Fe-activated Rh and Ba-Pd material compositions (2016-10-25),

12. 9475004 - Rhodium-iron catalysts (2016-10-25),

13. 9468912 - Zero PGM catalyst including Cu—Co—Mn ternary spinel for TWC applications (2016-10-18),

14. 9427730 - Bimetallic synergized PGM catalyst systems for TWC application (2016-08-30),

15. 9259716 - Oxidation catalyst systems compositions and methods thereof (2016-02-16),

Company Overview

Clean Diesel Technologies, Inc. is a leader in the development and manufacturing of advanced emissions control solutions, focusing on innovative catalyst technologies. Based in Oxnard, California, the company specializes in zero-PGM catalysts, three-way catalysts, and bimetallic catalyst systems aimed at reducing harmful emissions from diesel engines. Their expertise extends to diesel particulate control and urea pyrolysis chambers, contributing to cleaner air and compliance with stringent environmental regulations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

48 Patents

#4 in Oxnard, CA

#1,719 in California

#7,307 in US

#14,591 in the World

Oxnard, CA, United States of America

Clean Diesel Technologies, Inc.

Forward Citations = 1,139

25 inventors:

Zahra Nazarpoor (19 out of 31 patents)

Stephen J Golden (16 out of 44 patents)

James M Valentine (13 out of 39 patents)

4. Jeremy D Peter-Hoblyn (12 out of 24 patents)

5. Randal L Hatfield (7 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Clean Diesel Technologies, Inc.. Retrieved from https://idiyas.com/company/clean-diesel-technologies

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]

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