DN

Donald P. Northrop

DU Duro-Test: 7 patents #2 of 20Top 10%
📍 Glen Rock, NJ: #25 of 164 inventorsTop 20%
🗺 New Jersey: #9,830 of 69,400 inventorsTop 15%
Overall (All Time): #584,823 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
7300327 Method for constructing a scotopic after-glow lamp Charles Bolta 2007-11-27
6917154 Scotopic after-glow lamp Charles Bolta 2005-07-12
5498924 Fluorescent lamp capable of operating on multiple ballast system 1996-03-12
5122710 Rare earth phosphor blends for fluorescent lamp using four to five phosphors Gerald Schiazzano 1992-06-16
4924368 Fluorescent lamp with protective shield David P. Strauss 1990-05-08
4891550 Phosphor blend for broad spectrum fluorescent lamp Gerald Schiazzano, Arpad Pirovic 1990-01-02
4758173 Socket adaptor for fluorescent lamp 1988-07-19
4745323 Compact fluorescent lamp with outer envelope Arpad Pirovic 1988-05-17
4734616 Fluoresent lamp with double cathode and probe 1988-03-29