For the Inventor, By the Inventor

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San Jose, CA, United States of America

Tula Technology, Inc.

USPTO Granted Patents = 188

% Expired Patents = 26.1

EPO Patents = 4

Trademarks = 3

Forward Citations = 3,281

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86 inventors (with patents filed for the assignee):

Louis Joseph Serrano (88 out of 140 patents)

Matthew Aaron Younkins (48 out of 51 patents)

Shikui Kevin Chen (41 out of 42 patents)

4. Xin Yuan (30 out of 30 patents)

5. Mohammad R Pirjaberi (30 out of 32 patents)

6. Adya S Tripathi (30 out of 54 patents)

7. Steven E Carlson (29 out of 29 patents)

8. Vijay Srinivasan (26 out of 43 patents)

9. Mark A Wilcutts (26 out of 26 patents)

10. J Steven Kolhouse (18 out of 77 patents)

11. Mark A Shost (16 out of 34 patents)

12. John W Parsels (15 out of 16 patents)

13. Chester Silvestri (15 out of 22 patents)

14. Joshua P Switkes (13 out of 69 patents)

15. Masaki Nagashima (13 out of 13 patents)

Core Competencies:

Cylinder Deactivation

Exhaust Management

Emissions Control

Skip Fire

Lean Burn

Engine Diagnostics

Torque Smoothing

Thermal Management

Fuel Injection

Combustion Optimization

Engine Performance

Noise Reduction

188 patents: Sort by Forward Citations

1. 12571354 - Systems and methods for cylinder deactivation operation control (2026-03-10),

2. 12497927 - Systems and methods for filter regeneration with cylinder deactivation (2025-12-16),

3. 12486814 - Systems and methods for bypassing a compromised engine cylinder (2025-12-02),

4. 12448911 - Systems and methods to minimize exhaust system condensation (2025-10-21),

5. 12209515 - Dynamic cylinder deactivation life factor to modify cylinder deactivation strategy (2025-01-28),

6. 12196144 - Systems and methods for aftertreatment system thermal mangement using cylinder deactivation and/or intake-air throttling (2025-01-14),

7. 11959432 - Exhaust valve failure diagnostics and management (2024-04-16),

8. 11946423 - Recharging management for skipping cylinders (2024-04-02),

9. 11933237 - Systems and methods for particulate filter regeneration with cylinder deactivation (2024-03-19),

10. 11933202 - Dynamic cylinder deactivation life factor to modify cylinder deactivation strategy (2024-03-19),

11. 11920533 - Systems and methods for coordination of skip-fire and aftertreatment heater operation to maintain exhaust gas temperature (2024-03-05),

12. 11859569 - Systems and methods to minimize emissions spikes when reactivating or deactivating a combustion cylinder (2024-01-02),

13. 11859567 - Systems and methods for skip-fire operation control (2024-01-02),

14. 11835004 - Method for determining pilot injection mass (2023-12-05),

15. 11821379 - Non-rotating cylinder pattern selection for equalizing cylinder usage in an internal combustion engine (2023-11-21),

Tula Technology, Inc. is a leading automotive technology company that specializes in developing and licensing breakthrough engine efficiency and emissions control solutions. Their innovative Dynamic Skip Fire (DSF) technology enables vehicles to achieve significant fuel efficiency improvements while reducing emissions. Tula Technology works with automotive manufacturers and suppliers to integrate their DSF technology into vehicles, delivering a more sustainable and efficient transportation future.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

188 Patents

#68 in San Jose, CA

#473 in California

#2,177 in US

#4,470 in the World

San Jose, CA, United States of America

Tula Technology, Inc.

Forward Citations = 3,281

86 inventors:

Louis Joseph Serrano (88 out of 140 patents)

Matthew Aaron Younkins (48 out of 51 patents)

Shikui Kevin Chen (41 out of 42 patents)

4. Xin Yuan (30 out of 30 patents)

5. Mohammad R Pirjaberi (30 out of 32 patents)

Please report any incorrect information to [email protected]

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