JR

John L. de Ris

FR Factory Mutual Research: 3 patents #1 of 20Top 5%
FT Fm Global Technologies: 3 patents #2 of 19Top 15%
GI Gas Research Institute: 1 patents #343 of 808Top 45%
Overall (All Time): #749,806 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7699116 Anti-skipping sprinkler Hong Yu, Benjamin D. Ditch 2010-04-20
6971792 Device and method for measuring absorbed heat flux in a fire test apparatus Mohammed Mahmoud Abdulkader KHAN 2005-12-06
6862941 Heat flux measurement pipe and method for determining sprinkler water delivery requirement Ronald L. Alpert, Lawrence Orloff 2005-03-08
6499357 Heat flux measurement pipe and method for determining sprinkler water delivery requirement Ronald L. Alpert, Lawrence Orloff 2002-12-31
6367560 Wet sprinkler system for cold environments Joseph Hankins, Wayne H. Wilke 2002-04-09
5248252 Enhanced radiant output burner Michael A. Delichatsios 1993-09-28
4637735 Bench-scale material flammability test apparatus and process for measuring flammability George H. Markstein 1987-01-20