Inventor

BONRATH WERNER

CH110 patents

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

BONRATH WERNER

DSM IP ASSETS BV

Manufacture of tocol, tocol derivatives and tocopherols

Process for the manufacture of α-tocopheryl acetate

Selective reduction of esters to alcohols

6-chromanol derivatives and their synthesis

Catalytic synthesis of vitamin A intermediate

Manufacture of lactones

Process for the preparation of intermediates for the synthesis of vitamin A derivatives from polyenes by cyclisation

Metal powderdous catalyst for hydrogenation processes

Process for production of new sulfolenic intermediates

Dehydrogenation process

Process for the production of retinal

Intermediates for the vitamin A synthesis

Device for processing and conditioning of material transported through the device

Device useful for hydrogenation reactions (II)

Device useful for hydrogenation reactions (III)

Device useful for hydrogenation reactions (I)

Manufacture of trimethylhydroquinone diacylates

Process of production of 1-(5,5-dimethylcyclohex-1-en-1-yl)ethanone and 1-(5,5-dimethylcyclohex-6-en-1-yl )ethanone

Synthesis of tetrahydromyrcenol

Specific dehydrogenation process (I)

Method for producing specific α, β-unsaturated aldehydes

Process of production of 7,8-dihydro-C15-aldehyde

Method for producing specific α,β-unsaturated aldehydes by rearrangement process

Process for the preparation of 3,7-dimethylnonan-1-ol

Process of asymmetric hydrogenation of ketals and acetals

Reaction with a gold catalyst

Process for the preparation of timberone

Manufacture of tocopheryl acetate

Metal powderdous catalyst for hydrogenation processes

Process of production of dehydrolinalyl acetate (II)

Process of production of dehydrolinalyl acetate (I)

Process for the production of 4-alkanoyloxy-2-methylbutanoic acid

Catalytic system

ROCHE VITAMINS INC

Method of making D,L-A-tocopherol

Method of making d,l-α-tocopherol

Process for making vitamin E using hydrogen-tris(oxalato) phosphate

Process for the manufacture of dihydrocitral

Process for the manufacture of 5-cyano-4-lower alkyl-oxazoles

Process for preparing d,l-α-tocopherol

Process for the synthesis of vitamin E

Tocopherol manufacture by tris(perfluorohydrocarbylsulphonyl) methane or metal methides thereof

Process for concentrating epigallocatechin gallate

BONRATH WERNER

Process for the manufacture of a precursor of vitamin B1

Process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene

Process for the manufacture of chroman derivatives, especially α-tocopherol and alka-noates thereof

Preparation of 4-acetoxy-2-methylbutanal by catalytic carbon carbon double bond hydrogenation

HOFFMANN LA ROCHE

Process for the manufacture of 5-cyano-4-lower alkyl-oxazoles

Process for the manufacture of citral

Method for the dehydration of amides to nitriles

DSM IP ASSETS B V A NETHERLAND

Process for the manufacture of alkenylated hydroxylated aromatic compounds, of chroman compounds and of their acylated derivatives