Inventor

Jelle Rudolf Anne Sietsma

Inventor
Utrecht, NL

Overview

3→
Patents
2012–2014
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C10Gprimary
C10GCracking hydrocarbon oils20%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry13%
B82YSpecific uses or applications of nanostructures13%
C01GCompounds containing metals not covered by subclasses c01d or c01f13%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds13%
C01BNon-metallic elements7%
C07CAcyclic or carbocyclic compounds7%
C11CFatty acids from fats, oils or waxes7%
Y02PClimate change mitigation technologies in the production or processing of goods7%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012–2014Patents assigned to SIETSMA JELLE RUDOLF ANNE (3)· patent assignee history
2012Patents assigned to JOHNSON MATTHEY PLC (2)· patent assignee history
2012Patents assigned to DE JONG KRIJN PIETER (1)· patent assignee history
2012Patents assigned to DE JONGH PETRA ELISABETH (1)· patent assignee history
2012Based in Utrecht, NL· patent location history
2014Patents assigned to DE JONGE JOHANNES PETRUS (1)· patent assignee history
2014Based in Amsterdam, NL· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SIETSMA JELLE RUDOLF ANNEself32012–2014
JOHNSON MATTHEY PLC22012
DE JONG KRIJN PIETER12012
DE JONGE JOHANNES PETRUS12014
DE JONGH PETRA ELISABETH12012
Locations
LocationPatentsSpan
Utrecht, NL22012
Amsterdam, NL12014