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For the Inventor, By the Inventor

Union City, CA, United States of America

Connie J Chang-Hasnain

This inventor holds 18 USPTO granted patents and 9 published patent applications, primarily in Optical Engineering. Top assignee: University of California. Active years: 1998-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Connie J Chang-Hasnain. Retrieved from https://idiyas.com/inventor/connie-j-chang-hasnain

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

Calculating rank
USPTO Granted Patents = 18 

% Patents Active = 72.2

Average Co-Inventor Count = 3.2

ph-index = 9

Forward Citations = 176(Granted Patents)


Location History:

  • Union City, CA (US) (2000)
  • Palo Alto, CA (US) (1998 - 2019)

Company Filing History:

goldMedal18 out of 16,048 
 
University of California
 patents

Years Active: 1998-2019

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Areas of Expertise:
Vertical Cavity Lasers
High Contrast Gratings
Plasmonic Photodetectors
Optical Sensors
Nanopillar Resonators
Sub-Wavelength Gratings
Hollow Core Waveguides
Color Control Metastructures
Saturable Absorbers
Electromagnetically Induced Transparency
Optical Buffers
18 patents (USPTO):Explore Patents
1. 10361539 - Air-cavity dominant vertical cavity surface emitting lasers (2019-07-23),
2. 10330602 - Optical sensor using high contrast gratings coupled with surface plasmon polariton (2019-06-25),
3. 10114238 - Actively controllable color using high contrast metastructures (2018-10-30),
4. 9093818 - Nanopillar optical resonator (2015-07-28),
5. 8809672 - Nanoneedle plasmonic photodetectors and solar cells (2014-08-19),
6. 8755118 - Planar, high NA, low loss transmitting or reflecting lenses using sub-wavelength high contrast grating (2014-06-17),
7. 8673680 - Nanoneedle plasmonic photodetectors and solar cells (2014-03-18),
8. 8526471 - High contrast grating based saturable absorber for mode-locked lasers and its applications in passively mode-locked vertical-cavity surface-emitting lasers (2013-09-03),
9. 8488646 - HCG reflection enhancement in diverse refractive index material (2013-07-16),
10. 8442374 - Ultra-low loss hollow core waveguide using high-contrast gratings (2013-05-14),
11. 8189643 - Sub-wavelength grating integrated VCSEL (2012-05-29),
12. 8059690 - Sub-wavelength grating integrated VCSEL (2011-11-15),
13. 7304781 - Ultra broadband mirror using subwavelength grating (2007-12-04),
14. 7038827 - Variable semiconductor all-optical buffer using slow light based on electromagnetically induced transparency (2006-05-02),
15. 6900920 - Variable semiconductor all-optical buffer using slow light based on electromagnetically induced transparency (2005-05-31),

Title: The Innovations of Connie J Chang-Hasnain

Introduction

Connie J Chang-Hasnain is a prominent inventor based in Union City, CA (US). She has made significant contributions to the field of optical engineering, particularly in the development of advanced laser technologies and optical sensors. With a total of 18 patents, her work has had a profound impact on various applications in the industry.

Latest Patents

Among her latest patents are innovative designs for vertical-cavity surface-emitting lasers (VCSELs). These designs enable their use as widely wavelength-swept coherent light sources and multiple-wavelength VCSEL arrays. The patents describe three general configurations: a semiconductor-cavity-dominant (SCD) design, an extended-cavity (EC) design, and an air-cavity-dominant (ACD) design. Each configuration offers unique advantages in terms of field confinement and resonance characteristics. Additionally, she has developed an optical sensing platform that utilizes high contrast gratings coupled with surface plasmon polariton. This platform features an array of sensors that detect changes on the sensor surface when a target interacts with a recognition element, showcasing her innovative approach to optical detection.

Career Highlights

Connie J Chang-Hasnain is affiliated with the University of California, where she continues to advance her research and development efforts. Her work has not only contributed to academic knowledge but has also paved the way for practical applications in various industries.

Collaborations

Throughout her career, she has collaborated with notable colleagues, including Forrest G Sedgwick and Michael Chung-Yi Huang. These collaborations have further enriched her research and expanded the impact of her inventions.

Conclusion

Connie J Chang-Hasnain's contributions to the field of optical engineering are remarkable and continue to influence advancements in technology. Her innovative patents and collaborative efforts highlight her dedication to pushing the boundaries of science and engineering.

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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