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

Tom Huizinga — 10 Patents

Shell Oil Compny: 9 patents #321 of 4,423Top 8%
Amsterdam, NL: #172 of 2,851 inventorsTop 7%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
Tom Huizinga has been granted 10 US patents while listed as an inventor at Shell Oil Compny. The first was granted in 1986 and the most recent in November 1993. Tom Huizinga ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Tom Huizinga in Amsterdam, NL.

Patents per Year

Patents granted per year, 1986 to 1993Bar chart with a peak of 4 patents in 1989.peak 41986: 1 patents19861987: 1 patents19871989: 4 patents19891990: 2 patents19901991: 1 patents19911993: 1 patents1993

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
5262044 Process for upgrading a hydrocarbonaceous feedstock and apparatus for use therein Gerardus L. B. Thielemans 1993-11-16
5006496 Process for the preparation of zeolitic catalysts Arend Hoek, Hennie Schaper, Aan Hendrik Klazinga 1991-04-09
4925820 Hydrocarbon conversion process and catalysts Arend Hoek, Ian E. Maxwell 1990-05-15
4916096 Hydrocarbon conversion catalysts Arend Hoek, Ian E. Maxwell 1990-04-10
4888319 Silica-alumina extrudates Jacobus T. Daamen 1989-12-19
4857170 Hydrocarbon conversion catalysts Arend Hoek, Ian E. Maxwell 1989-08-15
4857171 Hydrocarbon conversion process and catalysts Arend Hoek, Ian E. Maxwell 1989-08-15
4836910 Catalytic dewaxing with zeolite theta-1 Jacob A. van de Griend, Arend Hoek 1989-06-06
4663140 Process for the preparation of crystalline aluminum silicate compounds using pyridine and a quaternary ammonium compound Willibrord A. Van Erp, Josepha M. E. Seelen-Kruijssen 1987-05-05
4613488 Process for the preparation of crystalline aluminum silicate compounds using pyridine and a quaternary ammonium compound Willibrord A. Van Erp, Josepha M. E. Seelen-Kruijssen 1986-09-23