Inventor

KRAMER PETRUS A

NL20 patents

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

KRAMER PETRUS A

SHELL OIL CO

Trihalocyclopropyl carbonates

Process for the preparation of cyclobutanones

Trihalomethylation of aldehydes

Process for the preparation of dihalovinylcyclopropane carboxylic acid

Oxabicyclo[3.1.0]hexan-2-ones

Cyclopropyl dihalo phosphites

1R, Cis 2,2-dihalovinyl-3,3-dimethylcyclopropylmethanol and ester derivatives

Cis-lactone pyrethroid intermediates

Preparation of 2-formyl-3,3-dimethylcyclopropaneacetic acid

2-(2,2-Dihalovinyl)-3,3-dimethylcyclopropylacetone pyrethroid intermediates

Preparation of nitriles

2-(2,2-Dihalovinyl)-3,3-dimethylcyclopropanecarbaldehyde dimethyl acetal

Process for the preparation of 4-dihalomethyl-3-oxabicyclo[3.1.0]hexan-2-ones

Preparation of dihalovinyl compounds

Dihalomethylenelactone pyrethroid intermediates

Process of preparing dihalovinyl compounds

Preparation of 2-(2-acetyl-3-oxobutyl)-3,3-dimethylcyclopropanecarbaldehyde

Preparation of nitriles

Process for the preparation of nitrophenylalkanols

SHELL INT RESEARCH

Preparation of cyclopropanecarbonitriles