Tonia Havewala Fletcher

This inventor holds 7 USPTO granted patents and 4 published patent applications and 1 EPO patent. Top assignee: Corning Incorporated. Active years: 2011-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tonia Havewala Fletcher. Retrieved from https://idiyas.com/inventor/tonia-havewala-fletcher

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

Calculating rank

USPTO Granted Patents = 7 (Patent Applications = 4)

% Patents Active = 57.1

EPO Patents = 1 (Patent Applications = 5)

Average Co-Inventor Count = 3.4

ph-index = 2

Forward Citations = 18(Granted Patents)

Company Filing History:

7 out of 7,501

Corning Incorporated

patents

Years Active: 2011-2025

Loading Chart...

7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12319612 - Salt bath compositions, salt bath systems, and processes for strengthening glass articles (2025-06-03),

2. 12201972 - Ion exchange systems and methods for ion exchanging glass articles (2025-01-21),

3. 11648549 - Ion exchange systems and methods for ion exchanging glass articles (2023-05-16),

4. 8921263 - Microwave energy-assisted, chemical activation of carbon (2014-12-30),

5. 8242038 - Low thermal expansion high strength honeycomb cement and method therefor (2012-08-14),

6. 8143180 - Honeycomb cement with ceramic-forming crystallizable glass and method therefor (2012-03-27),

7. 7976769 - Method of manufacturing a ceramic honeycomb structure (2011-07-12),

Title: Tonia Havewala Fletcher: Innovator in Glass Strengthening Technologies

Introduction

Tonia Havewala Fletcher is a prominent inventor based in Big Flats, NY (US). She has made significant contributions to the field of glass strengthening technologies, holding a total of 7 patents. Her innovative work focuses on enhancing the durability and chemical stability of glass articles through advanced salt bath compositions and systems.

Latest Patents

Fletcher's latest patents include groundbreaking developments in salt bath compositions and systems for strengthening glass articles. One of her notable inventions involves compositions that minimize the concentration of decomposition products in molten salt baths used in ion exchange processes. This innovation extends the life of salt baths while maintaining the chemical durability of strengthened glass over time. The salt bath compositions typically consist of 90 wt. % to 99.9 wt. % of one or more alkali or metal salts and 0.1 wt. % to 10 wt. % of silicic acid aggregates.

Another significant patent describes an ion exchange system that features a processing chamber and an additive chamber separated by a weir system. This design allows for efficient ion exchange in glass articles, enhancing their strength and durability.

Career Highlights

Tonia Havewala Fletcher is associated with Corning Incorporated, a leading company in glass and ceramics technology. Her work at Corning has positioned her as a key player in the development of innovative solutions for glass strengthening.

Collaborations

Fletcher has collaborated with notable colleagues, including David A. Earl and Robert John Paisley, contributing to the advancement of glass technology through teamwork and shared expertise.

Conclusion

Tonia Havewala Fletcher's contributions to glass strengthening technologies exemplify her innovative spirit and dedication to enhancing material durability. Her patents reflect a commitment to advancing the field and improving the quality of glass products.

Profile summary based on public USPTO records.