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N,N-dimethyl-p-phenylenediamine

4-N,4-N-dimethylbenzene-1,4-diamine · also: 4-Amino-N · p-dimethylaminoaniline · 4-dimethylaminoaniline · p-Aminodimethylaniline · 4-dimethylamino-aniline · 4-dimethylamino aniline

FormulaC8H12N2
Mol. weight136.198
PubChem CID7472
InChIKeyBZORFPDSXLZWJF-UHFFFAOYSA-N
SMILESCN(C)C1=CC=C(C=C1)N
29,613Patents
62Research papers
2,278Patents - last 3 years
0Papers - last 3 years

Who owns the IP

The organizations most actively patenting around this compound, ranked by referenced patent volume.

#AssigneePatents
1L'Oréal SA2,556
2Fujifilm Holdings Corp1,561
3Henkel AG and Co KGaA1,540
4Konica Minolta Inc1,376
5Mitsubishi Gas Chemical Co Inc1,118
6Procter and Gamble Co972
7Toray Industries Inc570
8BASF SE539
9Kao Corp465
10Dow Inc375

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This preview shows the leading assignees. Cypris reveals the full ownership landscape - every filing entity, filing trends, and portfolio momentum.

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Where innovation is concentrated

Patent classifications ranked by volume reveal the technical domains with the most active filing.

#CodeAreaPatents
1A61KMedicinal preparations8,195
2A61QCosmetics, personal care6,238
3C08GPolymers from non-vinyl bonds (e.g. polyamides, polyesters)5,387
4C08LPolymer compositions (blends)4,698
5C07DHeterocyclic compounds4,492
6C08KPolymer compositions (additives)3,032
7G03C2,969
8A61PTherapeutic activity (drug indications)2,834
9C07CAcyclic and carbocyclic compounds2,572
10C09DCoatings, paints, varnishes2,164

AI mapped opportunity space

This preview shows where patent activity concentrates. Cypris maps the full classification landscape to surface technical whitespace and IP headroom.

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Representative patents

The filings that best characterise the patent activity around this compound, most-referenced first.

TitleYearAssigneeCited by
HAIR DYE COMPOSITION COMPOUNDED WITH 4-AMINO-N,N-DIALKYLANILINE COMPOUND1999Fujifilm Holdings Corp5
3-and 4-amino-N(alkyl phenyl) benzamide compounds and composition containing same as anticonvulsant drugs19874
4-amino-n, n-dialkyl-3-dialkylaminoanilines as developers for photographic silver halide emulsions1953Eastman Kodak Co2
A kind of preparation method of N, N- dimethyl-p-phenylenediamine's hydrochloride2019China National Pharmaceutical Group Corp1
Synthesis method of N,N-dimethyl-p-phenylenediamine2010Zhejiang University of Technology1

How research activity has moved

Papers published per year for this compound, over the last decade of indexed records.

YearPapers
20181

Who's driving the science

The most-published authors working with this compound, alongside their primary affiliations.

#AuthorAffiliationPapers
1İlhami GülçınAtatürk University8
2Laura FerrerUniversitat de les Illes Balears4
3Vı́ctor CerdàUniversitat de les Illes Balears3
4Sarawut LunvongsaOkayama University3
5José Manuel EstelaUniversitat de les Illes Balears3
6Shoji MotomizuOkayama University3
7Fevzi TopalAğrı İbrahim Çeçen University2
8Martina SchmidtUniversity of Groningen2
9Thomas M. HeinzeUnited States Food and Drug Administration2
10S. V. KalyuzhnyiLomonosov Moscow State University2

Research leaders

This preview lists the top authors. Cypris surfaces the full researcher landscape, their affiliations, and how scientific influence is shifting.

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The literature that defines it

The most-cited papers anchoring the scientific record for this compound.

Frequently asked questions

Common questions about this compound's patent and research landscape, answered from the underlying data.

What is the molecular formula and structure of N,N-dimethyl-p-phenylenediamine?

N,N-dimethyl-p-phenylenediamine has the molecular formula C8H12N2 with a molecular weight of 136.198. Its canonical IUPAC name is 4-N,4-N-dimethylbenzene-1,4-diamine, and it is also known by numerous synonyms including 4-dimethylaminoaniline and p-dimethylaminoaniline.

Which companies hold the most patents involving this compound?

The leading patent assignees for N,N-dimethyl-p-phenylenediamine are L'Oréal SA with 2556 patents, Fujifilm Holdings Corp with 1561 patents, and Henkel AG and Co KGaA with 1540 patents. Other major assignees include Konica Minolta Inc, Mitsubishi Gas Chemical Co Inc, and Procter and Gamble Co.

What are the primary application areas indicated by patent classification?

The patent landscape shows concentration in several CPC subclasses. The highest is A61K (pharmaceutical preparations) with 8195 patents, followed by A61Q (specific functional cosmetic preparations) with 6238 patents. G03C (photosensitive materials) accounts for 2969 patents, and C07C (acyclic or carbocyclic compounds) covers 2572 patents, reflecting diverse applications including pharmaceuticals, cosmetics, and photographic materials.

How has patent activity for this compound evolved in recent years?

Patent activity has shown sustained growth, with 1051 patents filed in 2020, rising to a peak of 1304 patents in 2023. The previous three-year period (2022–2024) generated 2278 patents. Historical data shows consistent annual filing in the 700–800 range during 2016–2019, indicating increased interest and application development in recent years.

What academic research has been published on this compound?

Academic coverage includes 62 papers related to N,N-dimethyl-p-phenylenediamine. Notable research areas include enzyme-mediated dye degradation, analytical chemistry methods development, and antioxidant activities. Key contributing authors include İlhami Gülçın from Atatürk University and researchers from Universitat de les Illes Balears including Laura Ferrer, Vı́ctor Cerdà, and José Manuel Estela.

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