For the Inventor, By the Inventor

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San Jose, CA, United States of America

Numerical Technologies, Inc.

USPTO Granted Patents = 77

% Expired Patents = 1.3

Trademarks = 3

Forward Citations = 4,050

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40 inventors (with patents filed for the assignee):

Christophe Pierrat (36 out of 182 patents)

Yao-Ting Wang (18 out of 33 patents)

Hua-Yu Liu (11 out of 28 patents)

4. Yagyensh C Pati (10 out of 18 patents)

5. Youping Zhang (10 out of 22 patents)

6. Fang-Cheng Chang (9 out of 24 patents)

7. Shao-Po Wu (8 out of 16 patents)

8. Seonghun Cho (5 out of 6 patents)

9. Michel Luc Côté (5 out of 5 patents)

10. Chin-Hsen Lin (3 out of 5 patents)

11. Philippe Hurat (2 out of 5 patents)

12. Yong Liu (2 out of 4 patents)

13. Linard Karklin (2 out of 11 patents)

14. Kent Richardson (2 out of 3 patents)

15. Michael Sanie (2 out of 3 patents)

Core Competencies:

Phase Shifting Masks

Optical Proximity Correction

Integrated Circuits

Layout Optimization

Defect Analysis

Mask Design

3D Effects Correction

Mask Defect Analysis

Resolution Enhancement

Fabrication Layout

Circuit Manufacture

Proximity Effects

77 patents: Sort by Forward Citations

1. 6928635 - Selectively applying resolution enhancement techniques to improve performance and manufacturing cost of integrated circuits (2005-08-09),

2. 6901575 - Resolving phase-shift conflicts in layouts using weighted links between phase shifters (2005-05-31),

3. 6887630 - Method and apparatus for fracturing polygons on masks used in an optical lithography process (2005-05-03),

4. 6870951 - Method and apparatus to facilitate auto-alignment of images for defect inspection and defect analysis (2005-03-22),

5. 6859918 - Alleviating line end shortening by extending phase shifters (2005-02-22),

6. 6852471 - Exposure control for phase shifting photolithographic masks (2005-02-08),

7. 6846617 - Facilitating optical proximity effect correction through pupil filtering (2005-01-25),

8. 6846596 - Alternating phase shift masking for multiple levels of masking resolution (2005-01-25),

9. 6830854 - System and method for correcting 3D effects in an alternating phase-shifting mask (2004-12-14),

10. 6823503 - Method and apparatus for creating a phase-shifting mask for a photolithographic process (2004-11-23),

11. 6821689 - Using second exposure to assist a PSM exposure in printing a tight space adjacent to large feature (2004-11-23),

12. 6818385 - Phase shifting circuit manufacture method and apparatus (2004-11-16),

13. 6813759 - Hybrid optical proximity correction for alternating aperture phase shifting designs (2004-11-02),

14. 6811935 - Phase shift mask layout process for patterns including intersecting line segments (2004-11-02),

15. 6808850 - Performing optical proximity correction on trim-level segments not abutting features to be printed (2004-10-26),

Numerical Technologies, Inc. is a software development company specializing in cutting-edge numerical analysis and modeling solutions. With a team of highly skilled professionals, we provide advanced software tools and consulting services to help businesses optimize their decision-making process. Our innovative solutions cover a wide range of industries, including finance, engineering, healthcare, and more. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

77 Patents

#141 in San Jose, CA

#1,112 in California

#4,783 in US

#9,755 in the World

San Jose, CA, United States of America

Numerical Technologies, Inc.

Forward Citations = 4,050

40 inventors:

Christophe Pierrat (36 out of 182 patents)

Yao-Ting Wang (18 out of 33 patents)

Hua-Yu Liu (11 out of 28 patents)

4. Yagyensh C Pati (10 out of 18 patents)

5. Youping Zhang (10 out of 22 patents)

Please report any incorrect information to [email protected]

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