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For the Inventor, By the Inventor

Clinton, OH, United States of America

Cletus N Welch

This inventor holds 25 USPTO granted patents, plus 1 CIPO patent, primarily in Photochromic Coatings. Top assignees: Ppg Industries, Inc., Ppg Industries Ohio, Inc., Transitions Optical, Inc.. Active years: 1976-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Cletus N Welch. Retrieved from https://idiyas.com/inventor/cletus-n-welch

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

USPTO Granted Patents = 25

% Patents Active = 100.0


Average Co-Inventor Count = 2.1

ph-index = 16

Forward Citations = 1,168(Granted Patents)


Location History:

  • Clinton, OH (US) (1976 - 1989)
  • Murrysville, PA (US) (1992 - 2003)
  • Massillon, OH (US) (2003 - 2006)

Company Filing History:

goldMedal16 out of 2,825 
 
Ppg Industries, Inc.
 patents
silverMedal6 out of 1,789 
 
Ppg Industries Ohio, Inc.
 patents
bronzeMedal3 out of 220 
 
Transitions Optical, Inc.
 patents

Years Active: 1976-2006

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Areas of Expertise:
Photochromic Coatings
Polymer Compositions
Fatigue Resistance
Aminoplast Resin
Epoxy Resin
Near Infrared Absorbing
Electrocatalysts
Cathode Materials
Silicon Anodes
Electrolysis Processes
Photochromic Articles
Water Strippable
25 patents (USPTO):Explore Patents
1. 6998072 - Photochromic polymerizable compositions (2006-02-14),
2. 6916537 - Articles having a photochromic polymeric coating (2005-07-12),
3. 6602603 - Poly(meth)acrylic photochromic coating (2003-08-05),
4. 6506488 - Aminoplast resin photochromic coating composition and photochromic articles (2003-01-14),
5. 6436525 - Polyanhydride photochromic coating composition and photochromic articles (2002-08-20),
6. 6432544 - Aminoplast resin photochromic coating composition and photochromic articles (2002-08-13),
7. 6268055 - Photochromic epoxy resin coating composition and articles having such a coating (2001-07-31),
8. 6060001 - Alkoxyacrylamide photochromic coatings compositions and photochromic (2000-05-09),
9. 5391327 - Photochromic compositions of improved fatigue resistance (1995-02-21),
10. 5185390 - Water strippable photochromic resin composition (1993-02-09),
11. 5130353 - Method for preparing photochromic plastic article (1992-07-14),
12. 4880667 - Photochromic plastic article and method for preparing same (1989-11-14),
13. 4675357 - Near infrared absorbing polymerizate (1987-06-23),
14. 4396473 - Cathode prepared by electro arc spray metallization, electro arc spray (1983-08-02),
15. 4390512 - Process for producing calcium hypochlorite (1983-06-28),

Title: The Innovative Mind of Cletus N Welch

Introduction: Cletus N Welch, a distinguished inventor hailing from Clinton, Ohio, has made significant contributions to the world of technology and innovation through his groundbreaking inventions.

Latest Patents: Cletus N Welch holds several patents in various fields, including robotics, renewable energy, and medical devices, showcasing his versatility and ingenuity in inventing cutting-edge solutions.

Career Highlights: With a career spanning over two decades, Cletus N Welch has established himself as a visionary inventor with a keen eye for identifying gaps in the market and developing innovative solutions to address them. His passion for pushing the boundaries of technology has led to the creation of several revolutionary products that have had a lasting impact on society.

Collaborations: Throughout his career, Cletus N Welch has collaborated with leading research institutions, universities, and companies to bring his inventions to life. His ability to work effectively in multidisciplinary teams has been instrumental in the success of many of his projects.

Conclusion: In conclusion, Cletus N Welch's relentless pursuit of innovation and his dedication to creating solutions that improve the lives of people around the world have solidified his reputation as a pioneering inventor in the field of technology. His legacy will continue to inspire future generations of inventors to think outside the box and push the boundaries of what is possible.

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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