Hempel; Renate

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hempel; Renate.The latest application filed is for "catalyst modification with alkali metal, alkaline earth metal or rare earth metal ions in the continuous liquid-phase hydrogenat".

Company Profile

0.13.8

Hempel; Renate - Ruhland DE
Hempel; Renate - Schwarzheide DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Catalyst modification with alkali metal, alkaline earth metal or rare earth metal ions in the continuous liquid-phase hydrogenation of nitro compounds Grant 10,538,478 - Lange de Oliveira , et al. Ja	2020-01-21
Catalyst Modification With Alkali Metal, Alkaline Earth Metal Or Rare Earth Metal Ions In The Continuous Liquid-phase Hydrogenat App 20190233364 - LANGE DE OLIVEIRA; Armin ; et al.	2019-08-01
Process for acidic scrubbing of dinitrotoluene in the presence of hydrocyanic acid Grant 9,688,606 - Neto , et al. June 27, 2	2017-06-27
Process for workup of NO.sub.x-containing offgases from wastewater streams of nitration plants Grant 9,630,866 - Fritz , et al. April 25, 2	2017-04-25
Process For Acidic Scrubbing Of Dinitrotoluene In The Presence Of Hydrocyanic Acid App 20160251302 - NETO; SAMUEL ; et al.	2016-09-01
Method for removing HCN from crude dinitro toluene Grant 9,428,441 - Dai , et al. August 30, 2	2016-08-30
Method For Removing Hcn From Crude Dinitro Toluene App 20160194270 - DAI; Yuan Shen ; et al.	2016-07-07
Process for scrubbing dinitrotoluene Grant 9,249,083 - Neto , et al. February 2, 2	2016-02-02
Process For Scrubbing Dinitrotoluene App 20140039227 - NETO; Samuel ; et al.	2014-02-06
Acidic sludge adsorption of DNT wastewaters Grant 8,529,771 - Fritz , et al. September 10, 2	2013-09-10
Acid Toluene Extraction Of Dnt Wastewaters App 20120248038 - Fritz; Ruediger ; et al.	2012-10-04
Acidic Sludge Adsorption Of Dnt Wastewaters App 20120234773 - Fritz; Ruediger ; et al.	2012-09-20
Process For Workup Of Nox-containing Offgases From Wastewater Streams Of Nitration Plants App 20120228218 - Fritz; Ruediger ; et al.	2012-09-13
Foam material consisting predominantly of carbon having a high inner surface and method for the production thereof App 20060014908 - Rotermund; Udo ; et al.	2006-01-19
Prepolymers containing isocyanate groups and a method for the production thereof Grant 6,495,652 - Reichelt , et al. December 17, 2	2002-12-17
Storage-stable, blowing agent-containing emulsions for producing rigid foams based on isocyanate Grant 6,274,642 - Rotermund , et al. August 14, 2	2001-08-14
Microcellular polyurethane elastomer containing urea groups Grant 6,037,383 - Krech , et al. March 14, 2	2000-03-14
Production of rigid foams based on isocyanate Grant 5,684,092 - Seifert , et al. November 4, 1	1997-11-04
Production of rigid foams based on isocyanate Grant 5,624,969 - Seifert , et al. April 29, 1	1997-04-29

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