Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Gerard Lang — 191 Patents

L'L'Oreal: 126 patents #3 of 2,221Top 1%
SLSociete Anonyme Dite: L'Oreal: 21 patents #1 of 73Top 2%
LSL'Oreal S.A.: 17 patents #35 of 559Top 7%
RCRhone-Poulenc Chimie: 4 patents #103 of 660Top 20%
L'L'Oréal: 1 patents #96 of 67Top 145%
Épinay-sur-Seine, FR: #1 of 44 inventorsTop 3%
Overall (All Time): #3,748 of 4,157,543Top 1%
191 Patents All Time
Gerard Lang has been granted 191 US patents while listed as an inventor at L'Oreal. The first was granted in 1980 and the most recent in March 2009. Gerard Lang ranks #3,748 of 4,157,543 US inventors in our database (top 0.09%). Patent records list Gerard Lang in Épinay-sur-Seine, FR.

Issued Patents All Time

Showing 1–25 of 191 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7507260 Composition for dyeing keratinous fibres with a cationic direct dye and a silicone Christine Rondeau, Jean Cotteret 2009-03-24
7300473 Composition for dyeing keratin fibers with a cationic direct dye and a thickening polymer Jean Cotteret 2007-11-27
7175673 Composition for the oxidation dyeing of keratinous fibers containing a laccase and dyeing method using this composition Jean Cotteret 2007-02-13
7060112 Composition for the oxidation dyeing of keratinous fibers containing a laccase and dyeing method using this composition Jean Cotteret 2006-06-13
6899739 Dye composition for keratin fibres, with a cationic direct dye and a substantive polymer Jean Cotteret 2005-05-31
6893470 Keratinous fibre oxidation dyeing composition containing a laccase and dyeing method using same Jean Cotteret 2005-05-17
6890362 Oxidation dyeing composition for keratinous fibers and dyeing method using same 2005-05-10
6797013 Oxidation dyeing composition for keratinous fibres containing a 3-aminopyridine azo derivative and dyeing method using said composition Jean Cotteret, Mireille Maubru 2004-09-28
6626962 Mixture for the oxidation tinting of keratin fibers containing a laccase and tinting method using said mixture Jean Cotteret 2003-09-30
6613102 Composition for dyeing keratin fibers with a cationic direct dye and a thickening polymer Jean Cotteret 2003-09-02
6599329 Keratinous fibre oxidation dyeing composition containing a laccase and dyeing method using same Jean Cotteret 2003-07-29
6592633 Dye composition for keratin fibers, with a cationic direct dye and a substantive polymer Jean Cotteret 2003-07-15
6576024 Mixture for the oxidation tinting of keratin fibres containing a laccase and tinting method using said mixture Jean Cotteret 2003-06-10
6551359 Mixture for the oxidation tinting of keratin fibres containing a laccase and tinting method using said mixture Jean Cotteret 2003-04-22
6537328 Keratinous fibre oxidation dyeing compositions containing a laccase and dyeing method using same Jean Cotteret 2003-03-25
6530959 Dyeing composition for keratinous fibres with a direct cationic coloring agent and a surfactant Jean Cotteret 2003-03-11
6503283 Dyeing composition for keratin fibers and dyeing method using same Marie-Pascale Audousset 2003-01-07
6471730 Dyeing composition containing a laccase and keratinous fiber dyeing methods using same Jean Cotteret 2002-10-29
6423100 Composition for oxidation dyeing of keratin fibers and process using same Jean Cotteret 2002-07-23
6383231 Mixture for the oxidation tinting of keratin fibres containing a laccase and tinting method using said mixture Jean Cotteret 2002-05-07
6371994 Dye composition for keratin fibers, with a cationic direct dye and a polyol or polyol ether Jean Cotteret 2002-04-16
6358286 Composition for the oxidation dyeing of keratin fibres and dyeing process using this composition Jean Cotteret 2002-03-19
5938792 Process for dyeing keratinous fibers with aminoindoles and oxidation dye precursors at basic Ph's and dyeing agents Alex Junino, Jean Cotteret, Alain Lagrange 1999-08-17
5752982 Methods for dyeing keratinous fibers with compositions which contain aminoindole couplers, oxidation dye precursors, and oxidizing agents at acid pHs Alex Junino, Jean Cotteret, Alain Lagrange 1998-05-19
5670140 Photostable cosmetic filter composition containing a UV-A filter and a substituted dialkylbenzalmalonate, the use of substituted dialkylbenzalmalonates in cosmetics as broad-band solar filters and novel substituted dialkylmalonates Andre Deflandre, Serge Forestier, Herve Richard, Madeleine Leduc 1997-09-23