Inventor

ZINK RUDOLF

CH42 patents

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

ZINK RUDOLF

CIBA GEIGY CORP

Fluoran color formers

Heat-sensitive recording material

Fluoran color former mixture and use thereof in recording materials

Process for the preparation of fluoran compounds which are substituted by basic groups

Chromogenic quinazolines

Recording material employing chromogenic bisquinazolines

Bisquinazolines useful in color former systems

Chromogenic naphtholactams

Cationic dyes

Cationic dyes

1,3,3-Trimethyl-2-methylene indoline cationic n-methyl azo dyes

Pressure-or heat-sensitive recording material

Pressure- or heat-sensitive recording material

Bislactones

Pressure-sensitive or heat-sensitive recording material

Fluoran color former mixture and use thereof in recording materials

Chromogenic phthalides

2-dicarboximidefluorane or 3-dicarboximidefluorane compounds

2-aralkylaminofluorans, their preparation and the use thereof in recording materials

Chromogenic polycyclic azamethines

Process for the preparation of a pressure-sensitive recording material

Aliphatic bridged chromogenic bisquinazolines substituted with phenylamine or phenyl-containing heterobicyclic radicals

Chromogenic quinazolines

Mixtures of cationic dyes: naphtho-lactam and oxazine dyes for polyacrylonitriles

Naphtholactam compounds

Azo compounds, containing a 1,2,4-thiadiazole moiety

Color former mixture

Bisphthalide lactones, their preparation and the use thereof in recording materials

Chromogenic phthalides

Benzthiazolium azo dyes

Methine compounds

Process for the production of carbinol bases from indoline compounds

Crystalline bromide or iodide salts of triazole dyes for polyacrylonitrile

CIBA SC HOLDING AG

Use of selected benzotriazole derivatives for protecting human and animal skin and hair from the harmful effects of UV radiation

Indolin derivatives as sun protection agents

Color former mixture

Biphenyl compounds substituted by camphor or hydantoin derivatives as sunscreen compositions

Heteroaryl substituted hydroxyphenyltriazine uv-absorbers

Process for the preparation of halogenated hydroxydiphenyl compounds

Indolin derivaties as sun protection agents

Process for the preparation of halogenated hydroxydiphenyl compounds

Process for the preparation of 4,4′-dihalogen-o-hydroxydiphenyl compounds