Inventor

KIEFFER JOHANN

FR19 patents

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

KIEFFER JOHANN

SPCM SA

Hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid

Hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid

Method of preparation of cationic polymers with reduced halides content

Hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid

Hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid

Fracturing fluid comprising a (co)polymer of a hydrated crystalline form of 2-acrylamido-2-methylpropane sulphonic acid and hydraulic fracturing method

Method for producing 2-acrylamido-2-methylpropane sulphonic acid

Method for producing the 2-acrylamido-2-methylpropane sulfonic acid monomer and polymer comprising said monomer

Method for treating a suspension of solid particles in water using a (co)polymer of a hydrated crystalline form of 2-acrylamido-2-methylpropanesulfonic acid

Enhanced oil recovery method using a (co)polymer of a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid

Aqueous fracturing fluid composition and fracturing process using the composition

Process for filtering 2-acrylamido-2-methylpropane sulfonic acid

Method for the preparation of alkylsalicylaldehyde and alkylsalicylaldoxime, and use thereof

SNF GROUP

Method for obtaining bio-sourced N-vinylformamide

Dialkyl tin oxide composition and process for producing 2-dimethylaminoethyl (meth)acrylate

2-dimethylaminoethyl acrylate polymers and their preparation method

Method for the purification of acrylamido-2-methyl-2-propanesulphonic acid

Method for producing 2-dimethylaminoethyl (meth)acrylate

Sulfobetaine monomers, process for preparing same, and uses thereof