Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KJ

Kees Jonckers — 14 Patents

DNDsm N.V.: 5 patents #47 of 669Top 8%
DBDsm Ip Assets B.V.: 4 patents #340 of 2,011Top 20%
UBUnie Van Kunstmestfabrieken B.V.: 3 patents #5 of 24Top 25%
SBStamicarbon B.V.: 2 patents #111 of 427Top 30%
Born, NL: #2 of 37 inventorsTop 6%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
Kees Jonckers has been granted 14 US patents while listed as an inventor at Dsm N.V.. The first was granted in 1984 and the most recent in August 2008. Kees Jonckers ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Kees Jonckers in Born, NL.

Patents per Year

Patents granted per year, 1984 to 2008Bar chart with a peak of 4 patents in 2005.peak 41984: 1 patents19841985: 2 patents19851989: 2 patents19891998: 1 patents19982000: 2 patents20002002: 1 patents20022005: 4 patents20052008: 1 patents2008

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
7407532 Process for separating NH3 , and optionally also CO2 and H2O, from a mixture containing NH3 , CO2 and H2O Andreas J. Biermans, Johannes Henricus Mennen, Nora Anna De Wit, Herbert Willem Gerrit Hooijkaas, Bastiaan Renè Agnes Marie Van De Kerkhove 2008-08-05
6921838 Process for the preparation of urea Jozef Hubert Meessen 2005-07-26
6881862 Process for the preparation of urea Jozef Hubert Meessen 2005-04-19
6858755 Process for the preparation of urea Jozef Hubert Meessen 2005-02-22
6855846 Process for the preparation of urea Andreas J. Biermans 2005-02-15
6392096 Process for the preparation of urea Johannes Henricus Mennen 2002-05-21
6165315 Reactor for the synthesis of urea Hendrik F. Perree 2000-12-26
6118023 Method for increasing the capacity of an existing urea process Hendrik F. Perree 2000-09-12
5767313 Method for the preparation of urea 1998-06-16
4866207 Process for concentrating an urea solution by evaporation Henk C. Burks 1989-09-12
4801747 Process for preparing urea 1989-01-31
4540813 Process for the preparation of urea Petrus J. M. van Nassau, Andreas J. Biermans, Mario G. R. T. de Cooker 1985-09-10
4539077 Process for the preparation of urea Petrus J. M. van Nassau, Andreas J. Biermans 1985-09-03
4456535 Process for the removal of urea, ammonia, and carbon dioxide from dilute aqueous solutions Jan Zuidam, Petrus J. M. van Nassau, Pierre G. M. B. Bruls 1984-06-26