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For the Inventor, By the Inventor

Alhambra, CA, United States of America

Hiefo Corporation


USPTO Granted Patents = 4

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

goldMedal Henry A Blauvelt (4 out of 76 patents)

silverMedal Wei Hsin (3 out of 3 patents)


4 patents:

1. 12592546 - Semiconductor waveguide optical gain device with lateral current confinement (2026-03-31),
2. 12456849 - Semiconductor waveguide optical gain device with lateral current confinement or optical mode shaping (2025-10-28),
3. 12431690 - Semiconductor waveguide optical gain device with optical mode shaping (2025-09-30),
4. 12355211 - Semiconductor waveguide optical gain device with optical mode shaping (2025-07-08),
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USPTO Data Jan 1 1976 - Sep 22 2026

4 Patents

#9 in Alhambra, CA

#14,030 in California

#60,532 in US

Alhambra, CA (US)
Alhambra, CA, United States of America

Hiefo Corporation

Forward Citations = 0

2 inventors:

goldMedal Henry A Blauvelt (4 out of 76 patents)

silverMedal Wei Hsin (3 out of 3 patents)

Please report any incorrect information to [email protected]
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