Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
CB

Claude Brun

ESElf Atochem S.A.: 10 patents #14 of 505Top 3%
ATAtochem: 8 patents #16 of 347Top 5%
TMTotal Raffinage Marketing: 3 patents #8 of 122Top 7%
ATAtofina: 3 patents #33 of 359Top 10%
IFIfp: 2 patents #17 of 143Top 15%
AFArkema France: 1 patents #466 of 935Top 50%
HIHospal Industrie: 1 patents #22 of 52Top 45%
ARArkema: 1 patents #227 of 443Top 55%
INIfp Energies Nouvelles: 1 patents #579 of 1,048Top 60%
TFTotal Raffinage France: 1 patents #5 of 28Top 20%
ACAto Chimie: 1 patents #13 of 28Top 50%
Overall (All Time): #119,181 of 4,157,543Top 3%
31 Patents All Time

Issued Patents All Time

Showing 26–31 of 31 patents

Patent #TitleCo-InventorsDate
5075270 Process for preparing a catalyst component, resultant catalyst system, and process for synthesis of polymers Jean-Loup Lacombe 1991-12-24
5055535 Procedure for gas-phase polymerication of ethylene allowing the fabrication of linear polyethylene with a narrow molecular-weight distribution Roger Spitz, Jean-Francois Joly 1991-10-08
4611038 Process for the polymerization of olefins Auguste Cheux, Robert Pelletier 1986-09-09
4558023 Process for the preparation of an active solid hydrocarbon which can be used to polymerize olefines, and a process for the synthesis of an olefinic polymer or copolymer using the said active hydrocarbon as a catalytic system Auguste Cheux, Robert Pelletier 1985-12-10
4536484 Process for preparation of a transition metal component for a catalytic system of polymerization of olefins Jean-Loup Lacombe 1985-08-20
4467080 Process for polymerization in a gaseous phase using heterogeneous catalysis and a spherical reactor for carrying out the process Robert Pelletier 1984-08-21