Company Filing History:
4 out of 81 
2 out of 72 
1 out of 101 
Years Active: 1976-1988
Title: The Innovations of Thomas H. Gray
Introduction
Thomas H. Gray is a notable inventor based in Pittsburgh, PA, with a remarkable portfolio of seven patents. His work primarily focuses on advancements in materials and manufacturing processes, particularly in the field of metallurgy and electronics.
Latest Patents
Among his latest patents is a method of annealing an aperture shadow mask for a color cathode ray tube. This innovative process involves creating an aperture mask from a nickel-iron alloy with low thermal expansion. The method includes a first annealing step to achieve desirable mechanical properties for warm forming, followed by a second annealing to ensure a stress-free mask with an oxidized high thermal emissivity surface. Control of atmospheres and oxidizing potentials during these steps is crucial for the process's success.
Another significant patent is for a method of casting amorphous metals. This invention provides an amorphous Fe-B-Si alloy that boasts improved castability while retaining excellent magnetic properties and ductility. The alloy composition includes 0.1-4.0% chromium, with a general makeup of 6-10% boron, 14-17% silicon, and the balance being iron, along with minimal impurities. The method also outlines the casting of an amorphous strip material from this alloy.
Career Highlights
Throughout his career, Thomas H. Gray has made significant contributions while working for Allegheny Ludlum Industries, Inc. and Allegheny Ludlum Steel Corporation. His expertise in metallurgy and innovative approaches to manufacturing have positioned him as a key figure in his field.
Collaborations
Some of his notable coworkers include S. Leslie Ames and Lewis L. Kish, who have collaborated with him on various projects, contributing to the advancement of technology in their respective areas.
Conclusion
Thomas H. Gray's contributions to the fields of metallurgy and electronics through his patents and career achievements highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and inspire future inventors.