DC

David E. Cowan

RC Rapid Oxygen Company: 5 patents #1 of 2Top 50%
PS Plastic Safety Systems: 4 patents #4 of 6Top 70%
OP Off The Wall Products: 3 patents #3 of 23Top 15%
📍 Cornwall, CT: #1 of 6 inventorsTop 20%
🗺 Connecticut: #3,761 of 34,797 inventorsTop 15%
Overall (All Time): #411,331 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
D924405 Portable oxygen device Richard P. Imbruce 2021-07-06
10926113 Portable chemical oxygen generator Richard P. Imbruce 2021-02-23
10556135 Portable chemical oxygen generator Richard P. Imbruce 2020-02-11
10039942 Portable chemical oxygen generator Richard P. Imbruce 2018-08-07
9849312 Portable chemical oxygen generator Richard P. Imbruce 2017-12-26
7922420 Barriers with kiss-offs Marc E. Christensen, Greg H. Brown, Bryan D. Grabowski, Charles M. Mettler, Bruce E. Owens +1 more 2011-04-12
7588387 Barriers with interlocking sides Marc E. Christensen, Greg H. Brown, Bryan D. Grabowski, Charles M. Mettler, Bruce E. Owens +1 more 2009-09-15
D533281 Barrier with interlocking sides Marc E. Christensen, Greg H. Brown, Bryan D. Grabowski, Charles M. Mettler, Bruce E. Owens +1 more 2006-12-05
6769207 Portable sign assembly Gregory H. Brown, Charles M. Mettler 2004-08-03
6182600 Traffic channeling device Gregory H. Brown, David A. Cowan 2001-02-06
D406543 Traffic channelizer Gregory H. Brown, David A. Cowan 1999-03-09
5421668 Tread ballast or weight for temporary traffic control devices and posts David A. Cowan 1995-06-06