Location History:
- Niskayuna, NY (US) (2002 - 2011)
- Schenectady, NY (US) (2016 - 2018)
Company Filing History:
13 out of 51,873 
4 out of 581 
Years Active: 2002-2018
Title: The Innovative Contributions of John Thomas Leman
Introduction
John Thomas Leman is a notable inventor based in Niskayuna, NY (US). He has made significant contributions to the field of materials science, particularly in investment casting. With a total of 17 patents to his name, Leman's work has had a profound impact on the industry.
Latest Patents
Leman's latest patents include innovative compositions for cores used in investment casting. One of his notable inventions is a ceramic core that predominantly comprises mullite, derived from a precursor of alumina particles and siloxane binders. This ceramic body contains free silica, which is largely unavailable for reaction with metal alloys used in investment casting. Additionally, he has developed methods for making cast metal articles, including a method of preparing a mold to form an article. This method involves preparing a quantity of fluid with lightweight oil, submerging the mold in the fluid, and creating a negative pressure to remove air from internal cavities.
Career Highlights
Throughout his career, Leman has worked with prominent companies such as General Electric Company and Momentive Performance Materials GmbH. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.
Collaborations
Leman has collaborated with several talented individuals in his field, including Mark Philip D'Evelyn and Dong-Sil Park. These collaborations have further enhanced his work and led to the development of groundbreaking technologies.
Conclusion
John Thomas Leman's contributions to the field of investment casting and materials science are noteworthy. His innovative patents and collaborations with industry professionals highlight his dedication to advancing technology. His work continues to influence the industry and inspire future innovations.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.