Posts Tagged: "nanomaterials"

Sumita Mitra, Inventor of Filtek Nanocomposite Dental Materials at 3M, Inducted into National Inventors Hall of Fame

This year, the National Inventors Hall of Fame will be inducting a new class which includes the inventor of a dental composite material which was revolutionary for its high durability and wear resistance compared to other filling materials at that time. This Friday, May 4th, marks the 14th anniversary of the issue of one of the dental filling material patents held by Dr. Sumita Mitra, a former 3M chemical engineer responsible for the development of Filtek dental restorative material. With this patent anniversary upon us, we return again to our Evolution of Technology series to take a long view at the history of dental implants and the impact of Mitra’s contributions to this field of research.

Evolution of Tech: Roger Bacon’s high-performance carbon fibers find widespread use for thermal, mechanical properties

October 25th, will mark the 56th anniversary of the issue of the seminal patent for high-performance carbon fibers, which were invented by Roger Bacon, a 2016 inductee into the National Inventors Hall of Fame. This American physicist’s chance discovery of ultra-thin, incredibly strong fibers composed primarily of carbon led to great business success for Bacon’s employer, Union Carbide, as well as multiple recognitions of Bacon’s own work which kickstarted development into carbon materials which continue even today… The patent for which Bacon is inducted into the National Inventor’s Hall of Fame is U.S. Patent No. 2957756, entitled Filamentary Graphite and Method for Producing the Same. Issued October 25th, 1960, it claimed a method for producing filamentary graphite by confining a graphite rod surmounting a carbon block within a closed pressure vessel which has a means for introducing inert gases, striking a direct current arc between the rod and the block while maintaining a pressure level within the vessel between 1,150 pounds per square inch (psi) and 1,400 psi to effect vaporization of the rod onto the block to form a boule, cooling the boule, fracturing the boule and removing the graphite filaments contained within the boule.

Recent 3M patents showcase innovative developments in nanomaterials, glass, dental devices

During 2014, 3M received 517 patents from the U.S. Patent and Trademark Office, putting it in 80th place among companies petitioning the USPTO for patents that year. The company has received 143 U.S. patents in the past three months, according to Innography’s patent portfolio analysis tools. The text cluster provided here details widespread R&D in optical film, electrical cable, abrasive particles and curable compositions.

Being Green: Bayh-Dole Makes Every Day Earth Day

Normally when we discuss the impact of the Bayh-Dole Act, allowing universities and small companies to commercialize inventions made with federal support, we focus on the life sciences where the resulting new drugs and therapies dramatically improved lives for millions around the world. However, the celebration of Earth Day is an appropriate time to consider the contributions our publicly funded research organizations– partnering with an entrepreneurial private sector– make in protecting our environment.