Dean R. Hellwig — 4 Patents at Johnson Polymer

Dean R. Hellwig has been granted 4 US patents while listed as an inventor at Johnson Polymer. The first was granted in 2002 and the most recent in February 2005. Dean R. Hellwig ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Dean R. Hellwig in Racine, WI, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
6858678	Continuous bulk polymerization and esterification process and compositions including the polymeric product	Kevin M. Andrist, John E. Blasko, Glenn C. Calhoun, Frederick C. Hansen, Kurt A. Hessenius +9 more	2005-02-22
6689853	Process for producing polymers by free radical polymerization and condensation reaction, and products related thereto	John David CAMPBELL, Jon A. Debling, Douglas J. DeYoung, Ioannis Giannakitsas, David D. Schatz +2 more	2004-02-10
6355727	Continuous bulk polymerization and esterification process	Kevin M. Andrist, John E. Blasko, Glenn C. Calhoun, Frederick C. Hansen, Kurt A. Hessenius +9 more	2002-03-12
6346590	Process for producing polymers by free radical polymerization and condensation reaction, and apparatus and products related thereto	John David CAMPBELL, Jon A. Debling, Douglas J. DeYoung, Ioannis Giannakitsas, David D. Schatz +2 more	2002-02-12

Dean R. Hellwig — 4 Patents

Issued Patents All Time

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