JOSEF MEISSNER GMBH & CO. KG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 9129
 
  
 
B01D SEPARATION 4130
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 3106
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9738592 Method for removing impurities from dinitrotoluenesApr 30, 15Aug 22, 17[C07C, B01J, B01D]
9688606 Process for acidic scrubbing of dinitrotoluene in the presence of hydrocyanic acidOct 22, 14Jun 27, 17[C07C, C02F, B01D]
9540313 Method and apparatus for purifying nitration productsFeb 26, 15Jan 10, 17[C07C, B01J]
9249083 Process for scrubbing dinitrotolueneApr 25, 13Feb 02, 16[C07C]
9115048 Method and apparatus for purifying nitration productsMay 18, 12Aug 25, 15[C07C]
7632960 Process for the preparation of nitric esters of monohydric alcoholsNov 20, 06Dec 15, 09[C07C]
7470826 Recovery of nitrating acid mixtures from nitration processesOct 16, 06Dec 30, 08[C07C]

Expired/Abandoned/Withdrawn Patents

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