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For the Inventor, By the Inventor

Saint Prix, France

Gérard Lang

This inventor holds 13 USPTO granted patents, primarily in Keratin Dyeing Composition. Top assignees: Loreal Sa, L'oreal. Active years: 2002-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Gérard Lang. Retrieved from https://idiyas.com/inventor/gandeacuterard-lang

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 6

Forward Citations = 116(Granted Patents)


Company Filing History:

goldMedal11 out of 978 
 
Loreal Sa
 patents
silverMedal2 out of 5,253 
 
L'oreal
 patents

Years Active: 2002-2004

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Areas of Expertise:
Keratin Fibers
Oxidation Dyeing
Cationic Direct Dye
Laccase
Dye Composition
Thickening Polymer
Substantive Polymer
Surfactant
Dyeing Method
Tinting Mixture
Azo Derivative
13 patents (USPTO):Explore Patents
1. 6797013 - Oxidation dyeing composition for keratinous fibres containing a 3-aminopyridine azo derivative and dyeing method using said composition (2004-09-28),
2. 6626962 - Mixture for the oxidation tinting of keratin fibers containing a laccase and tinting method using said mixture (2003-09-30),
3. 6613102 - Composition for dyeing keratin fibers with a cationic direct dye and a thickening polymer (2003-09-02),
4. 6599329 - Keratinous fibre oxidation dyeing composition containing a laccase and dyeing method using same (2003-07-29),
5. 6592633 - Dye composition for keratin fibers, with a cationic direct dye and a substantive polymer (2003-07-15),
6. 6576024 - Mixture for the oxidation tinting of keratin fibres containing a laccase and tinting method using said mixture (2003-06-10),
7. 6551359 - Mixture for the oxidation tinting of keratin fibres containing a laccase and tinting method using said mixture (2003-04-22),
8. 6537328 - Keratinous fibre oxidation dyeing compositions containing a laccase and dyeing method using same (2003-03-25),
9. 6530959 - Dyeing composition for keratinous fibres with a direct cationic coloring agent and a surfactant (2003-03-11),
10. 6471730 - Dyeing composition containing a laccase and keratinous fiber dyeing methods using same (2002-10-29),
11. 6383231 - Mixture for the oxidation tinting of keratin fibres containing a laccase and tinting method using said mixture (2002-05-07),
12. 6371994 - Dye composition for keratin fibers, with a cationic direct dye and a polyol or polyol ether (2002-04-16),
13. 6358286 - Composition for the oxidation dyeing of keratin fibres and dyeing process using this composition (2002-03-19),

Title: Gérard Lang: Innovator in Keratin Dyeing Technologies

Introduction

Gérard Lang is a notable inventor based in Saint Prix, France, recognized for his contributions to the field of keratin dyeing. With a total of 13 patents to his name, Lang has made significant advancements in the cosmetic industry, particularly in the formulation of dyeing compositions for hair.

Latest Patents

One of his latest patents is an oxidation dyeing composition for keratinous fibers that contains a 3-aminopyridine azo derivative. This invention focuses on a composition suitable for the oxidation dyeing of keratin fibers, especially human hair. It comprises at least one heterocyclic oxidation base and at least one 3-aminopyridine derivative as a direct dye, along with a dyeing process utilizing this composition. Another significant patent involves a mixture for the oxidation tinting of keratin fibers that includes a laccase enzyme. This cosmetic mixture is designed for tinting human hair and contains a support material suitable for keratin fibers, along with a conditioning agent that is insoluble in aqueous media and an oxidation colorant.

Career Highlights

Throughout his career, Gérard Lang has worked with prominent companies in the cosmetic industry, including L'Oréal. His innovative work has contributed to the development of advanced hair dyeing techniques that enhance the quality and effectiveness of hair coloring products.

Collaborations

Lang has collaborated with notable professionals in his field, including Jean Cotteret and Mireille Maubru. These collaborations have further enriched his work and have led to the successful development of various patented technologies.

Conclusion

Gérard Lang's contributions to the field of keratin dyeing have established him as a key figure in cosmetic innovation. His patents reflect a commitment to improving hair dyeing processes, making significant strides in the industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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