Company Filing History:
Years Active: 1980
Title: Innovations of Jean P. Gervais in Artificial Graphite
Introduction
Jean P. Gervais is a notable inventor based in Noisy le Sec, France. He has made significant contributions to the field of materials science, particularly in the development of artificial graphite. With a total of 2 patents, Gervais has focused on creating advanced materials with unique properties.
Latest Patents
Gervais's latest patents include innovations in artificial graphite. One of his patents describes a dual-textured graphite that features a coarse, strongly bonded grained structure. This macrotexture is composed of coarse grains formed from ultrafine grains, with dimensions ranging from 0.4 to 6.0 mm for the coarse grains and below 0.050 mm for the ultrafine grains. The fine grains are interconnected by graphitized pore-containing carbon, which has pores of less than 2 micrometers in diameter. The coarse grains are also linked by graphitized pore-containing carbon with larger pores, ranging from 5 to 20 micrometers in diameter. The graphite exhibits a coefficient of linear expansion of 4-6 × 10⁻⁶ /°C, thermal conductivity of 0.20 cal/cm/°C/sec, electrical resistivity of 1500-2000 μ ohms/cm, and an anisotropy factor not exceeding 1.4.
Another patent focuses on dual pore-structured carbon and graphite, which consists of a macroporous agglomeration of microporous grains. The macropores have radii ranging from 10 to 350 micrometers, while the micropores range from 0.2 to 1.0 micrometers. This structure is designed to be fluid permeable, with a density of 0.70 to 1.50 grams/cc, gas permeability of 20 to 500 cm²/sec/atmos, and porosity of 30 to 50%. The production process involves mixing tar or pitch with finely divided solid carbonaceous material and a non-carbon-forming material, followed by shaping and heating to achieve carbonization and/or graphitization.
Career Highlights
Jean P. Gervais is currently associated with Le Carbone Lorraine, a company known for its expertise in carbon and graphite materials. His work has significantly advanced the understanding and application of artificial graphite in various