Inventor

WEIGEL HORST

DE36 patents

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

WEIGEL HORST

DEGUSSA

Optically active proline derivative, process for its production and use

Method for the continuous preparation of methionine or methionine derivatives

Process for the preparation of 2,3,5-trimethylhydroquinone diesters

Process for the production of trimethylhydroquinone diesters and of trimethylhydroquinone

Process for the production of 2-hydroxy-4-methythiobutyric acid ammonium salt

Process for preparing esterified chroman compounds

Process for the production of α-tocopherol esters

Process for the production of 4-aminobutyramide hydrochloride

Manganese dioxide catalyst for the hydrolysis of carbonitriles

Process for the preparation of alpha-amino acids by hydrolysis of hydantoins at elevated pressure and elevated temperature

Method for the recovery of aqueous solutions of free, neutral α-amino acids from aqueous solutions of their alkali-metal salts

Process for the separation of L-leucine and L-isoleucine

Process for obtaining pure L-leucine

Process for the recovery of S-(carboxymethyl)-(R)-cysteine and S-(carboxymethyl)-(S)-cysteine

Nα-(3-Cyanopropanoyl)-aminocarboxylic acid derivatives and their use

Process for the separation of the racemate (R,S)-cysteine

α-(3-Cyano-propanoyl)-aminocarboxylic acid derivatives

Process for the production of 4-aminobutyramide hydrochloride

Process for the production of 3-cyanopropionamide

Process for the production of 2-acetamidocinnamic acid

Process for the production of 2,3,5-trimethylhydroquinone diesters

Aliphatic alkanals with improved storage stability and method of improving the storage stability

Hydrolysis of acylamino acids

Process for the production of skatylhydantoin

Process for the production of 4-acylamido-4, 4-dicarbalkoxy-butanalphenylhydrazone

KLOECKNER HUMBOLDT DEUTZ AG

Method for the smelting of material such as ore concentrates

Method and apparatus for the smelting of material such as ore concentrates

Method for direct recovery of metal from metal-bearing ores

Method for the continuous refinement of contaminated copper in the molten phase

Device for obtaining large amounts of combustible gas from carbonaceous materials

Thermal method for the recovery of metals and/or metal combinations with the aid of a melting cyclone

Method for the recovery of zinc

Apparatus for the continuous recovery of tin from iron rich concentrates

Method for thermal treatment of nickel ore

KLOECKNER HUMBOLDT WEDAG

Apparatus for direct recovery of metal from metal-bearing ores

Method for the continuous recovery of tin from iron rich concentrates