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For the Inventor, By the Inventor

Sunnyvale, CA, United States of America

Chung K Chang

USPTO Granted Patents = 18 

Average Co-Inventor Count = 3.0

ph-index = 13

Forward Citations = 610(Granted Patents)


Location History:

  • Sunnyvale, CA (US) (1993 - 1999)
  • Santa Clara, CA (US) (1997 - 2001)

Company Filing History:

goldMedal15 out of 12,872 
 
Advanced Micro Devices Corporation
 patents
silverMedal2 out of 9 
 
Eon Silicon Devices, Inc.
 patents
bronzeMedal1 out of 832,718 
Other
 patents

Years Active: 1993-2001

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18 patents (USPTO):Explore Patents
1. 6208539 - Two-phase clock charge pump with power regulation (2001-03-27),
2. 6028780 - Two-phase clock charge pump with power regulation (2000-02-22),
3. 5973979 - Low supply voltage negative charge pump (1999-10-26),
4. 5867430 - Bank architecture for a non-volatile memory enabling simultaneous (1999-02-02),
5. 5852582 - Non-volatile storage device refresh time detector (1998-12-22),
6. 5841696 - Non-volatile memory enabling simultaneous reading and writing by time (1998-11-24),
7. 5644531 - Program algorithm for low voltage single power supply flash memories (1997-07-01),
8. 5642311 - Overerase correction for flash memory which limits overerase and (1997-06-24),
9. 5608672 - Correction method leading to a uniform threshold voltage distribution (1997-03-04),
10. 5485423 - Method for eliminating of cycling-induced electron trapping in the (1996-01-16),
11. 5406517 - Distributed negative gate power supply (1995-04-11),
12. 5376835 - Power-on reset circuit (1994-12-27),
13. 5365484 - Independent array grounds for flash EEPROM array with paged erase (1994-11-15),
14. 5359558 - Flash eeprom array with improved high endurance (1994-10-25),
15. 5349558 - Sector-based redundancy architecture (1994-09-20),

Title: Innovations of Chung K Chang

Introduction

Chung K Chang is a prominent inventor based in Sunnyvale, CA, known for his significant contributions to the field of electrical engineering. He holds a total of 18 patents, showcasing his innovative spirit and technical expertise. His work primarily focuses on developing advanced methods and apparatuses for enhancing electronic devices.

Latest Patents

One of his latest patents is a two-phase clock charge pump with power regulation. This invention provides a charge pump that is particularly useful for generating high voltages and high currents for erasing and programming flash electrically-erasable programmable read-only memory arrays (Flash EEPROMs). The invention includes an efficient method and circuit for generating a pumped voltage with no voltage drop from one stage to the next by using a simple two-phase clocking scheme and an auxiliary pump to gate a larger primary pump. Additionally, one feature allows adjustment of the level of voltage pumping to accommodate higher voltage power supplies.

Career Highlights

Chung K Chang has worked with notable companies in the technology sector, including Advanced Micro Devices Corporation and Eon Silicon Devices, Inc. His experience in these organizations has contributed to his development as an inventor and has allowed him to apply his innovative ideas in practical applications.

Collaborations

Throughout his career, Chung has collaborated with talented individuals such as Lee Edward Cleveland and Johnny C Chen. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

Chung K Chang's contributions to the field of electrical engineering through his patents and collaborations highlight his role as a significant inventor. His innovative solutions continue to impact the technology landscape positively.

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