Inventor

ROLF MEINHARD

DE23 patents

⚠️ This page may combine multiple inventors who share the name “ROLF MEINHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ROLF MEINHARD

BAYER AG

Optical biosensor and method of use

Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties

Anthraquinone-azo pyridone-containing compounds

Anthraquinone derivatives for pigmenting organic macromolecular substances

Azo dye pigments containing 4-quinazolinone moieties

Process for the preparation of pigments based on isoindole

Azine pigments, processes for their preparation, and their use

Process for the preparation of dimethyl succinylosuccinate, the disodium salt thereof, dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and dianilinoterephthalic acids, and the dimethyl esters and salts thereof

Pigments based on metal complexes

Red nickel azine pigment

Azine pigments

Anthraquinone derivatives

Monoazo pigments containing a quinazo linonylacetoacetanilide coupling component

Metal complex pigments of azines

Isoindolazines

Axomethine pigments

Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances

Anthraquinone derivatives, processes for their preparation, processes for pigmenting organic macromolecular substances, and pigmented organic macromolecular material

Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances

Anthraquinone-azomethine compounds, processes for their preparation and processes for pigmenting organic macromolecular substances

Heterocyclic compounds and porphyrin compounds obtainable therefrom

MILES INC

Conditioning process for phthalocyanine pigments

Naphthotriazolium salts