WD

Walter Dursch

Hoechst Gmbh: 15 patents #209 of 4,020Top 6%
CA Cassella Aktiengesellschaft: 3 patents #61 of 243Top 30%
Overall (All Time): #260,966 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4749758 Process for the preparation of copolymers of vinylphosphonic acid and (meth) acrylic acid in aqueous solution Jurgen Grosse, Werner Gohla, Friedrich Engelhardt, Ulrich Riegel 1988-06-07
4743666 Water-soluble copolymers with pendant phosphonic, sulphonic and amide groups Friedrich Engelhardt, Klaus Kuhlein, Juliane Balzer, Hans-Jerg Kleiner 1988-05-10
4709086 Process for the preparation of 4-benzyl aspartate Merten Schlingmann, Hans-Ullrich Hoppe 1987-11-24
4696987 Process for the preparation of polymers of vinylphosphonic acid in protic solvents Walter Herwig, Friedrich Engelhardt 1987-09-29
4585845 Phosphonic acid cross-linked hydrophilic copolymers Friedrich Engelhardt, Klaus Kuhlein, Juliane Balzer, Hans-Jerg Kleiner 1986-04-29
4548762 Process for the preparation of vinylphosphonic acid dichloride and 2-chloroethanephosphonic acid dichloride Hans-Jerg Kleiner 1985-10-22
4493803 Process for the preparation of vinylphosphonic acid diesters and vinylphosphonic acid Hans-Jerg Kleiner 1985-01-15
4426336 Process for the preparation of vinylphosphonic acid derivatives and the use thereof Hans-Jerg Kleiner 1984-01-17
4401471 Inorganic cellular material and process for the manufacture thereof Peter Eckardt 1983-08-30
4388252 Process for the manufacture of vinyl phosphonic acid derivatives Hans-Jerg Kleiner 1983-06-14
4314052 Polyester which is soluble or dispersible in water, a process for its preparation and its use as a levelling auxiliary, levelling auxiliaries and processes for uniform dyeing Friedrich Engelhardt, Karl Hintermeier, Joachim Ribka, Walter Rupp 1982-02-02
4284410 Process for the pretreatment of cellulose fibers to be printed according to the thermotransfer printing method Ehrenfried Nischwitz 1981-08-18
4267125 Process for the manufacture of phosphinic and phosphonic acid anhydrides Hans-Jerg Kleiner 1981-05-12
4250124 Organic phosphorus compounds possessing 3-hydroxyalkylphosphinic acid ester groups Fritz Linke, Hans-Jerg Kleiner 1981-02-10
4244893 Polyphosphorus compounds obtained by reacting an alcohol, phosphorus anhydride and an oxalkylating agent Hans-Jerg Kleiner, Fritz Linke 1981-01-13
4220610 Organic phosphorus compounds with 2-hydroxyalkyl-phosphonic acid groups Fritz Linke 1980-09-02
4196141 Bisphosphinic acid anhydrides and process for their preparation Hans-Jerg Kleiner, Fritz Linke 1980-04-01
4195035 Alkane-bisalkyl-phosphinic anhydrides and process for the manufacture of alkane-phosphonic anhydrides and alkane-bis alkyl-phosphinic anhydrides Hans-Jerg Kleiner 1980-03-25