Growing community of inventors

Paris, France

Madeleine Leduc

Average Co-Inventor Count = 2.92

ph-index = 11

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 639

Madeleine LeducHerve Richard (33 patents)Madeleine LeducAlain Lagrange (16 patents)Madeleine LeducGerard Lang (9 patents)Madeleine LeducStéphane Sabelle (9 patents)Madeleine LeducAlain LaGrange (7 patents)Madeleine LeducAlain Malaval (5 patents)Madeleine LeducAlex M Junino (4 patents)Madeleine LeducSerge Forestier (3 patents)Madeleine LeducEric Metais (3 patents)Madeleine LeducChristophe Rondot (3 patents)Madeleine LeducLaure Ramos (3 patents)Madeleine LeducLaurent Vidal (2 patents)Madeleine LeducAndre Deflandre (2 patents)Madeleine LeducHerve Plessix (2 patents)Madeleine LeducHerv E Richard (2 patents)Madeleine LeducMichel Philippe (1 patent)Madeleine LeducAlain R Genet (1 patent)Madeleine LeducEric Terranova (1 patent)Madeleine LeducChristian Blaise (1 patent)Madeleine LeducOlivier Guerard (1 patent)Madeleine LeducVéronique Birault (1 patent)Madeleine LeducGerald Lang (1 patent)Madeleine LeducMadeleine Leduc (54 patents)Herve RichardHerve Richard (82 patents)Alain LagrangeAlain Lagrange (167 patents)Gerard LangGerard Lang (176 patents)Stéphane SabelleStéphane Sabelle (46 patents)Alain LaGrangeAlain LaGrange (38 patents)Alain MalavalAlain Malaval (17 patents)Alex M JuninoAlex M Junino (104 patents)Serge ForestierSerge Forestier (94 patents)Eric MetaisEric Metais (13 patents)Christophe RondotChristophe Rondot (5 patents)Laure RamosLaure Ramos (4 patents)Laurent VidalLaurent Vidal (51 patents)Andre DeflandreAndre Deflandre (16 patents)Herve PlessixHerve Plessix (3 patents)Herv E RichardHerv E Richard (2 patents)Michel PhilippeMichel Philippe (107 patents)Alain R GenetAlain R Genet (59 patents)Eric TerranovaEric Terranova (33 patents)Christian BlaiseChristian Blaise (28 patents)Olivier GuerardOlivier Guerard (3 patents)Véronique BiraultVéronique Birault (1 patent)Gerald LangGerald Lang (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. L'oreal (34 from 5,078 patents)

2. Societe L'oreal Sa (12 from 203 patents)

3. Loreal Sa (7 from 977 patents)

4. Other (1 from 832,843 patents)


54 patents:

1. 9554977 - Triaromatic azomethine direct dyes, dye composition comprising at least one such dye, method of implementation and use

2. 9226883 - Particular azomethine direct dyes, dye composition comprising at least one such compound, implementation process therefore and use thereof

3. 8771376 - Composition comprising at least one 2-pyrrolidone functionalized with an ester or amide radical, and at least one pigment or direct dye, for dyeing keratin materials

4. 8585779 - Composition comprising at least one 2-pyrrolidone functionalized in the 4 position with a carboxylic acid or amide, and at least one direct dye or a pigment for dyeing keratin fibres

5. 8105394 - Azomethine direct dyes or reduced precursors of azomethine direct dyes obtained from 2-alkylresorcinols, and hair dyeing process using these dyes or precursors

6. 8083809 - Azomethine direct dyes or reduced precursors of these dyes obtained from 2-chloro-3-amino-6-methylphenol, and hair dyeing method starting from these dyes and precursors

7. 8066782 - Azomethine direct dyes or reduced precursors of azomethine direct dyes obtained from 2-alkylresorcinols, and hair dyeing process using these dyes or precursors

8. 7132534 - Para-phenylenediamine derivatives containing a pyrrolidyl group, and use of these derivatives for coloring keratin fibers

9. 7090703 - Para-phenylenediamine derivatives comprising a cyclic diaza group substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers

10. 6946005 - Pyrrolidinyl-substituted para-phenylenediamine derivatives substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers

11. 6923835 - Bis-para-phenylenediamine derivatives comprising a pyrrolidyl group and use of these derivatives for dyeing keratin fibres

12. 6884266 - Dyeing composition for dyeing keratinous fibers comprising a cationic azo-dye

13. 6884265 - Dyeing composition for dyeing keratinous fibers comprising at least one particular dicationic diazo dye

14. 6730789 - Composition for dyeing keratinous fibers containing 3 amino pyrazolo- [1,5-a] pyridines, dyeing method, novel 3-amino pyrazolo-[1,5-a] pyridines

15. 6667343 - Siloxane dyes, compositions containing them and uses thereof

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12/27/2025
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