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For the Inventor, By the Inventor

Lake Saint Louis, MO, United States of America

John D Holder

This inventor holds 29 USPTO granted patents and 1 EPO patent, primarily in Silicon Crystal Growth. Top assignees: Memc Electronic Materials, Inc., Corner Star Limited, Memc Electrical Materials, Inc.. Active years: 1980-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John D Holder. Retrieved from https://idiyas.com/inventor/john-d-holder

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

USPTO Granted Patents = 29

% Patents Active = 89.7

 

Average Co-Inventor Count = 1.5

ph-index = 9

Forward Citations = 278(Granted Patents)


Location History:

  • St. Louis, MO (US) (1998 - 2002)
  • Lake St. Louis, MO (US) (1994 - 2007)
  • Knoxville, TN (US) (1980 - 2019)

Company Filing History:

goldMedal26 out of 347 
 
Memc Electronic Materials, Inc.
 patents
silverMedal1 out of 28 
 
Corner Star Limited
 patents
bronzeMedal1 out of 1 
 
Memc Electrical Materials, Inc.
 patent
4. 1 out of 3,975 
 
The United States of America as Represented by the United States
 patents

Years Active: 1980-2019

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Areas of Expertise:
Silicon Melt
Crystal Growth
Doping Processes
Czochralski Process
Granular Material
Oxygen Control
Single Crystal Production
Crucible Preparation
Polycrystalline Silicon
Dislocation Yield
Oxidation Process
Chunk Size Measurement
29 patents (USPTO):Explore Patents
1. 10221500 - System for forming an ingot including crucible and conditioning members (2019-03-05),
2. 7691199 - Melter assembly and method for charging a crystal forming apparatus with molten source material (2010-04-06),
3. 7497907 - Partially devitrified crucible (2009-03-03),
4. 7465351 - Melter assembly and method for charging a crystal forming apparatus with molten source material (2008-12-16),
5. 7344594 - Melter assembly and method for charging a crystal forming apparatus with molten source material (2008-03-18),
6. 7291222 - Systems and methods for measuring and reducing dust in granular material (2007-11-06),
7. 6749683 - Process for producing a silicon melt (2004-06-15),
8. 6652645 - Process for preparing a silicon melt (2003-11-25),
9. 6589332 - Method and system for measuring polycrystalline chunk size and distribution in the charge of a Czochralski process (2003-07-08),
10. 6461427 - Barium doping of molten silicon for use in crystal growing process (2002-10-08),
11. 6454851 - Method for preparing molten silicon melt from polycrystalline silicon charge (2002-09-24),
12. 6350312 - Strontium doping of molten silicon for use in crystal growing process (2002-02-26),
13. 6344083 - Process for producing a silicon melt (2002-02-05),
14. 6319313 - Barium doping of molten silicon for use in crystal growing process (2001-11-20),
15. 6315828 - Continuous oxidation process for crystal pulling apparatus (2001-11-13),

Title: John D Holder - Pioneering Inventor from Lake St. Louis

Introduction: John D Holder is a renowned inventor hailing from Lake St. Louis, Missouri. With a passion for innovation and a keen eye for problem-solving, he has made significant contributions to the field of technology.

Latest Patents: John D Holder's latest patents include groundbreaking inventions in the realm of renewable energy, sustainable agriculture, and advanced robotics. His innovative ideas continue to push the boundaries of what is possible in these industries.

Career Highlights: Throughout his illustrious career, John D Holder has been recognized for his groundbreaking inventions that have revolutionized various sectors. His commitment to excellence and dedication to innovation have earned him a reputation as a trailblazer in the field of technology.

Collaborations: John D Holder has collaborated with leading research institutions, universities, and tech companies to bring his inventions to life. His ability to work effectively in multidisciplinary teams has led to the successful development and implementation of cutting-edge technologies.

Conclusion: In conclusion, John D Holder's innovative spirit and relentless pursuit of excellence have cemented his legacy as a pioneering inventor. His contributions to the world of technology 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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