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For the Inventor, By the Inventor

Summit, NJ, United States of America

Alfred Yi Cho

This inventor holds 85 USPTO granted patents and 1 EPO patent, primarily in Quantum Cascade Lasers (CPC class 372 45). Top assignees: Lucent Technologies Inc., Bell Telephone Laboratories, At&t Bell Laboratories. Active years: 1976-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Alfred Yi Cho. Retrieved from https://idiyas.com/inventor/alfred-yi-cho

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

Calculating rank
USPTO Granted Patents = 85

% Patents Active = 97.6


Average Co-Inventor Count = 3.3

ph-index = 20

Forward Citations = 1,531(Granted Patents)

Forward Citations (Not Self Cited) = 1,470(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • New Providence, NJ (US) (1976 - 1980)
  • Summit, NJ (US) (1978 - 2006)

Company Filing History:

goldMedal39 out of 9,364 
 
Lucent Technologies Inc.
 patents
silverMedal18 out of 2,714 
 
Bell Telephone Laboratories
 patents
bronzeMedal12 out of 3,345 
 
At&t Bell Laboratories
 patents
4. 8 out of 745 
 
American Telephone & Telegraph Co., At&t Bell Laboratories
 patents
5. 2 out of 598 
 
Agere Systems Guardian Corp.
 patents
6. 2 out of 4,208 
 
At+t Corp.
 patents
7. 1 out of 60 
 
Agere Systems Optoelectronics Guardian Corp.
 patents
8. 1 out of 91 
 
At&t Ipm Corp.
 patents
9. 1 out of 1,370 
 
Yale University
 patents
10. 1 out of 834,601 
Other
 patents

Years Active: 1976-2006

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Areas of Expertise:
Quantum Cascade Laser
Optoelectronic Transducers
Light Emitters
Intersubband Devices
Nonlinear Semiconductor Sources
Optical Amplifiers
Distributed Feedback Lasers
Multi-Quantum Well Lasers
Surface Plasmon Lasers
III-V Semiconductors
Gain/Loss Engineering
Doped Quantum Wells
85 patents (USPTO):Explore Patents
1. 7092421 - Unipolar, intraband optoelectronic transducers with micro-cavity resonators (2006-08-15),
2. 7010010 - Broadband cascade light emitters (2006-03-07),
3. 6940639 - Phase matched parametric light generation in monolithically integrated intersubband optical devices (2005-09-06),
4. 6891187 - Optical devices with heavily doped multiple quantum wells (2005-05-10),
5. 6836499 - Optical amplifier for quantum cascade laser (2004-12-28),
6. 6816530 - Nonlinear semiconductor light sources (2004-11-09),
7. 6795467 - Technique for measuring intersubband electroluminescence in a quantum cascade laser (2004-09-21),
8. 6760354 - Intersubband light emitters with injection/relaxation regions doped to different levels (2004-07-06),
9. 6728282 - Engineering the gain/loss profile of intersubband optical devices having heterogeneous cascades (2004-04-27),
10. 6690699 - Quantum cascade laser with relaxation-stabilized injection (2004-02-10),
11. 6563852 - Self-mode-locking quantum cascade laser (2003-05-13),
12. 6556604 - Flat minibands with spatially symmetric wavefunctions in intersubband superlattice light emitters (2003-04-29),
13. 6501783 - Distributed feedback surface plasmon laser (2002-12-31),
14. 6463088 - Mesa geometry semiconductor light emitter having chalcogenide dielectric coating (2002-10-08),
15. 6400744 - Apparatus comprising a quantum cascade laser having improved distributed feedback for single-mode operation (2002-06-04),

Title: The Innovative Journey of Alfred Yi Cho

Introduction: Alfred Yi Cho, a pioneering inventor hailing from Summit, NJ (US), has made significant contributions to the field of innovations and inventions, particularly in the realm of technology and semiconductor devices.

Latest Patents: Alfred Yi Cho holds several patents in the field of semiconductor technology, including patents related to advanced transistor designs and semiconductor manufacturing processes.

Career Highlights: With a distinguished career spanning several decades, Alfred Yi Cho has been at the forefront of technological advancements. He has held key positions in renowned technology companies and research institutions, where he has played a pivotal role in developing cutting-edge technologies.

Collaborations: Throughout his career, Alfred Yi Cho has collaborated with leading experts in the field of semiconductor technology, fostering innovation and pushing the boundaries of what is possible in the realm of electronic devices.

Conclusion: Alfred Yi Cho's innovative spirit and dedication to technological advancement have solidified his position as a trailblazer in the field of semiconductor technology. His contributions continue to inspire future generations of inventors and innovators.

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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