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For the Inventor, By the Inventor

Santa Clara, CA, United States of America

Mark Melvin Butterworth

This inventor holds 64 USPTO granted patents and 4 published patent applications and 6 EPO patents, primarily in LED Technology (CPC class H01L). Top assignees: Lumileds LLC, Koninklijke Philips Corporation N.v., Hewlett-Packard Company. Active years: 1991-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mark Melvin Butterworth. Retrieved from https://idiyas.com/inventor/mark-melvin-butterworth

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

USPTO Granted Patents = 64 

% Patents Active = 82.8

 

Average Co-Inventor Count = 1.5

ph-index = 14

Forward Citations = 979(Granted Patents)

Forward Citations (Not Self Cited) = 966(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Muscatine, IA (US) (2013)
  • Eindhoven, NL (2018 - 2019)
  • Santa Clara, CA (US) (1991 - 2022)
  • San Jose, CA (US) (2016 - 2022)

Company Filing History:

goldMedal17 out of 910 
 
Lumileds LLC
 patents
silverMedal15 out of 21,894 
 
Koninklijke Philips Corporation N.v.
 patents
bronzeMedal8 out of 9,639 
 
Hewlett-Packard Company
 patents
4. 5 out of 497 
 
Avago Technologies Ecbu IP (Singapore) Pte. Ltd.
 patents
5. 4 out of 580 
 
Aptina Imaging Corporation
 patents
6. 3 out of 50 
 
Avago Technologies Ecbu IP Pte. Ltd.
 patents
7. 3 out of 27,679 
 
Hewlett-Packard Development Company, L.p.
 patents
8. 2 out of 39,222 
 
Micron Technology Incorporated
 patents
9. 2 out of 222 
 
Philips Lumileds Lighting Company LLC
 patents
10. 1 out of 258 
 
Avago Technologies Fiber IP (Singapore) Pte. Ltd
 patents
11. 1 out of 1,813 
 
Avago Technologies General IP (Singapore) Pte. Ltd.
 patents
12. 1 out of 41 
 
Flextronics International USA, Inc.
 patents
13. 1 out of 122 
 
Marvell International Technology Ltd
 patents
14. 1 out of 1,509 
 
Pixart Imaging Incorporated
 patents
15. 2 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1991-2022

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Areas of Expertise:
Phosphor-Converted LEDs
Optical Cavities
Light Emission Control
Reflector Cups
Nanostructured Phosphor
LED Modules
Camera Flash
Encapsulated LED Lens
Total-Internal Reflection
Remote Phosphor Layer
Digital Camera Calibration
Touch Screen Detection
64 patents (USPTO):Explore Patents
1. 11320722 - Flash module containing an array of reflector cups for phosphor-converted LEDs (2022-05-03),
2. 11227982 - Deep molded reflector cup used as complete LED package (2022-01-18),
3. 11081471 - LED module with hermetic seal of wavelength conversion material (2021-08-03),
4. 11036114 - Thin LED flash for camera (2021-06-15),
5. 11031530 - Light emitting device with nanostructured phosphor (2021-06-08),
6. 10833227 - Optical cavity including a light emitting device and wavelength converting material (2020-11-10),
7. 10700044 - LED module with hermetic seal of wavelength conversion material (2020-06-30),
8. 10649315 - Flash module containing an array of reflector cups for phosphor-converted LEDs (2020-05-12),
9. 10564520 - Thin LED flash for camera (2020-02-18),
10. 10355182 - Encapsulated LED lens with bottom reflectors (2019-07-16),
11. 10347800 - Light emitting device with nanostructured phosphor (2019-07-09),
12. 10326051 - Light emitting device including shaped substrate (2019-06-18),
13. 10324359 - Thin LED flash for camera (2019-06-18),
14. 10120266 - Thin LED flash for camera (2018-11-06),
15. 10062819 - Shallow reflector cup for phosphor-converted LED filled with encapsulant (2018-08-28),

Title: The Innovative Contributions of Mark Melvin Butterworth

Introduction

Mark Melvin Butterworth, an accomplished inventor based in Santa Clara, California, holds an impressive portfolio of 64 patents. His expertise in LED technology and flash module design has significantly influenced the field of lighting solutions for cameras.

Latest Patents

Among Butterworth's notable recent inventions is a flash module containing an array of reflector cups for phosphor-converted LEDs. This innovative design features a rectangular array of compact LEDs mounted on a single lead frame, which connects the LEDs in series. The smaller size of these LEDs allows for a thin flash module that is compatible with modern cameras. Each cup in the reflector array has a square aperture, generating a square sub-beam, while a phosphor layer within the cups converts the light to white. The design aspect ratio is meticulously aligned to match the camera's field of view. Additionally, his deep molded reflector cup patent creates a narrow beam compactly without the need for a lens, showcasing the sophisticated melding of form and function in LED technology.

Career Highlights

Butterworth's career has been marked by his tenure at leading companies such as Lumileds LLC and Koninklijke Philips Corporation N.V. His innovations in LED technology have paved the way for enhanced lighting solutions, demonstrating practicality and efficiency in his designs.

Collaborations

Throughout his career, Butterworth has collaborated with notable professionals, including Oleg Borisovich Shchekin and Rene P Helbing. These partnerships have contributed to a rich exchange of ideas and advancement in the field of lighting technology.

Conclusion

Mark Melvin Butterworth continues to be a prominent figure in the realm of LED innovations. His extensive patent portfolio and significant contributions emphasize his role as a leading inventor, shaping the future of camera lighting solutions.

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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