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Inventor

Renate Hempel

Inventor
Ruhland, DE

Overview

15→
Patents
1997–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 15 as inventor

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

C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds26%
C07CAcyclic or carbocyclic compounds18%
C08JWorking-up18%
C02FTreatment of water, waste water, sewage, or sludge9%
C08LCompositions of macromolecular compounds9%
B01DSeparation6%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%
C01BNon-metallic elements3%
C09JAdhesives3%
C09KMaterials for miscellaneous applications, not provided for elsewhere3%
PatentTitleYear
10,538,478Catalyst modification with alkali metal, alkaline earth metal or rare earth metal ions in the continuous liquid-phase hydrogenation of nitro compounds20209,688,606'Process for acidic scrubbing of dinitrotoluene in the presence of hydrocyanic acid'20179,630,866'Process for workup of NOx-containing offgases from wastewater streams of nitration plants'20179,428,441'Method for removing HCN from crude dinitro toluene'20169,249,083'Process for scrubbing dinitrotoluene'20168,529,771'Acidic sludge adsorption of DNT wastewaters'20136,495,652'Prepolymers containing isocyanate groups and a method for the production thereof'20026,284,812'Thermally stable rigid foams based on isocyanate and having low brittleness and low thermal conductivity'20016,274,642'Storage-stable, blowing agent-containing emulsions for producing rigid foams based on isocyanate'20016,063,824'Microcellular urea-containing polyurethane elastomer'20006,037,383'Microcellular polyurethane elastomer containing urea groups'20005,916,480'Storage-stable emulsions for producing fine-celled rigid foams based on isocyanate'19995,895,792'Production of rigid polyurethane foams'19995,684,092'Production of rigid foams based on isocyanate'19975,624,969'Production of rigid foams based on isocyanate'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2002Patents assigned to BASF AG (9)· patent assignee history
1997Based in Schwarzheide, DE· patent location history
1999–2020Based in Ruhland, DE· patent location history
2013–2020Patents assigned to BASF SE (6)· patent assignee history
2013–2017Patents assigned to ALLARDT HOLGER (2)· patent assignee history
2013–2017Patents assigned to FRITZ RUEDIGER (2)· patent assignee history
2013–2017Patents assigned to HEMPEL RENATE (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BASF AG91997–2002
BASF SE62013–2020
ALLARDT HOLGER22013–2017
FRITZ RUEDIGER22013–2017
HEMPEL RENATEself22013–2017
Locations
LocationPatentsSpan
Ruhland, DE131999–2020
Schwarzheide, DE21997