JW

Jan Adolf Ernst Sperna Weiland

SN Sara Lee/ De N.V.: 5 patents #3 of 86Top 4%
📍 Deventer, NL: #22 of 180 inventorsTop 15%
Overall (All Time): #1,043,640 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6357630 Assembly comprising a flexible container having a dosing device and dosing device of such assembly 2002-03-19
6253967 Assembly comprising a flexible container having a dosing device and dosing device of such assembly 2001-07-03
6026993 Pump and pump outlet nozzle 2000-02-22
5181753 Device for withdrawing liquid from a reservoir by means of a water jet device Jan Cornelis Van Hattem 1993-01-26
5083503 Method and an apparatus for making a beverage such as coffee, soup,tea, cocoa or the like Jan Cornelis Van Hattem, Bernardus M. van Thoor 1992-01-28