This inventor holds 1 USPTO granted patent. Top assignee: Bethlehem Steel Corporation. Active years: 1983.
Company Filing History:
Years Active: 1983
Title: The Innovations of Donald L Harper
Introduction
Donald L Harper is a notable inventor based in Easton, PA (US). He has made significant contributions to the field of materials science, particularly in the development of high-strength steel sheets. His work has implications for various industries, including construction and manufacturing.
Latest Patents
Harper holds a patent for a "Formable high strength low alloy steel sheet." This invention is directed to a hot-rolled steel sheet that features an essentially refined ferritic grain size. The balanced chemical composition of this steel sheet comprises, by weight, 0.06 to 0.09% carbon, 1.0 to 1.6% manganese, 0.5% maximum silicon, 0.03 to 0.05% columbium, 0.06 to 0.12% vanadium, 0.010 to 0.025% nitrogen, 0.004% maximum sulfur, 0.02% maximum phosphorus, 0.02 to 0.08% aluminum, with the balance being essentially iron. This innovative steel is characterized by a minimum yield strength of 80 ksi, improved transverse bendability, and enhanced sheared edge stretchability.
Career Highlights
Harper has had a distinguished career at Bethlehem Steel Corporation, where he has applied his expertise in metallurgy and materials engineering. His work has contributed to advancements in steel production techniques and the development of stronger, more versatile materials.
Collaborations
Throughout his career, Harper has collaborated with notable colleagues, including Bruce L Bramfitt and Steven S Hansen. These partnerships have fostered innovation and have led to the successful development of new materials and technologies.
Conclusion
Donald L Harper's contributions to the field of materials science, particularly through his patent for high-strength steel sheets, demonstrate his commitment to innovation. His work continues to influence the industry and pave the way for future advancements in steel technology.