JB

Johannes Van Berkel

Shell Oil Compny: 6 patents #511 of 4,423Top 15%
SB Shell Internationale Research Maatschappij B.V.: 1 patents #62 of 211Top 30%
Overall (All Time): #769,908 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
4544510 Process for preparing cyclopropane carboxylic acid ester derivatives Wilhelmus N. Ruyters 1985-10-01
4298757 2-[2-(2,2-Dihalovinyl)-3,3-dimethylcyclopropyl ]vinyl alkanoates Hendrik C. Kelderman 1981-11-03
4281203 (Cyclopropyl)vinyl alkyl ether derivatives Johannes L. M. Syrier 1981-07-28
4258205 2,2-Dimethylcyclopropanecarbaldehyde dimethyl acetal derivatives Hendrik C. Kelderman 1981-03-24
4234512 Cyclopropane derivatives Hendrik C. Kelderman 1980-11-18
4230891 2-(2,2-Dihalovinyl)-3,3-dimethylcyclopropanecarbaldehyde dimethyl acetal Pieter A. Verbrugge, Petrus A. Kramer, Hendrik C. Kelderman 1980-10-28
4222964 2-(2,2-Dihalovinyl-3,3-dimethylcyclopropyl)ethanal Johannes L. M. Syrier, Hendrik C. Kelderman 1980-09-16