Notable : Famous : Founder/ originator

Robert Degos (1904–1987) was a French dermatologist who described several dermatoses including Degos disease which he first described in a seminal paper published in 1942 in the French journal of dermatology and syphilology.

Jean-Ovide Decroly (Ronse, 23 July 1871 – Uccle, 10 September 1932) was a Belgian teacher and psychologist.
He studied medicine at the University of Ghent, with half a year at the University of Berlin where he studied the action of toxins and antitoxins on general nutrition in 1898. He later worked with (mentally) handicapped children at the neurological clinic in Brussels.
Decroly founded The Hermitage School in 1907. He was a freemason, and a member of the lodge Les Amis Philanthropes of the Grand Orient of Belgium in Brussels. Nowadays the "Ecole Decroly" (based in Uccle, Brussels, a school reaching from kindergarten to baccalaureate) is following his pedagogical approach.

Louis Édouard Octave Crouzon (1874–1938) was a French neurologist born in Paris.
He received his doctorate from the University of Paris, where he studied under Paul Georges Dieulafoy (1839–1911), Joseph Babinski (1857–1932) and Pierre Marie (1853–1940). During his medical career, he was associated with the Hôtel-Dieu de Paris and Salpêtrière Hospital.Crouzon specialized in hereditary neurological diseases, especially spinocerebellar ataxia. He did extensive work associated with cervical and lumbar spine deformities, and conducted studies of chronic rheumatic and arthritic disorders. Crouzon was the first to describe a condition he called "craniofacial dysostosis", defined as a genetic branchial arch disorder that results in abnormal facial features. Today this condition is known as Crouzon's syndrome.For his entire career, Crouzon was interested in psychology, particularly in the work of Pierre Janet (1859-1947), whom Crouzon considered a major influence.During his career, he was president of the Société Neurologique de Paris (Neurological Society of Paris) and secretary of the journal Revue Neurologique.

Hans Gerhard Creutzfeldt (June 2, 1885 – December 30, 1964) was a German neurologist and neuropathologist. Although he is typically credited as the physician to first describe the Creutzfeldt–Jakob disease, this has been disputed. He was born in Harburg an der Elbe and died in Munich.

Gustavo Colonnetti (8 November 1886 – 20 March 1968) was an Italian mathematician and engineer who made important contributions to continuum mechanics and strength of materials. He was a Rector of the Politecnico di Torino and President of CNR (Consiglio Nazionale delle Ricerche). His theories found important applications in modern techniques of construction, such as pre-stressed concrete.He is remembered for Colonnetti's theorem (or Colonnetti's minimum principle) which states that in equilibrium the potential energy function W* is minimized.

Charles Edouard Chamberland (French pronunciation: [ʃaʁl ʃɑ̃bɛʁlɑ̃]; 12 March 1851 – 2 May 1908) was a French microbiologist from Chilly-le-Vignoble in the department of Jura who worked with Louis Pasteur.

In 1884 he developed a type of filtration known today as the Chamberland filter or Chamberland-Pasteur filter, a device that made use of an unglazed porcelain bar. The filter had pores that were smaller than bacteria, thus making it possible to pass a solution containing bacteria through the filter, and having the bacteria completely removed from the solution. Chamberland was also credited for starting a research project that led to the invention of the autoclave device in 1879.

Jules Carpentier (30 August 1851 – 30 June 1921) was a French engineer and inventor.
Jules Carpentier was a student at the French École polytechnique.
He bought the Ruhmkorff workshops in Paris when Heinrich Daniel Ruhmkorff died and made it a successful business for building electrical and magnetical devices. From 1890, he started to build photographic and cinematographic cameras. He is the designer of the submarine periscope, and worked at the adjustment of trichromic process of colour photography.
He patented the "Cinématographe", which serves as a film projector and developer in the late 1890s, and built devices from the Lumière Brothers.
Another of his patents, filed in England, was a primary reference of Theodor Scheimpflug, who disclaimed inventing the falsely eponymous Scheimpflug principle.He died in 1921 in a car accident in Joigny, France.

Aaron Novick (June 24, 1919 – December 21, 2000) is considered one of the founders of molecular biology. He started the University of Oregon's Institute of Molecular Biology, believed to be the first of its kind in the world, in 1959.
A graduate of the University of Chicago, he completed his doctorate in physical organic chemistry there in 1943, and then joined the Manhattan Project's Metallurgical Laboratory. He later worked at its Los Alamos Laboratory, and witnessed the Trinity nuclear test in July 1945.