DH

David M. Hrubowchak

OS Osram Sylvania: 10 patents #77 of 820Top 10%
📍 Litchfield, NH: #18 of 107 inventorsTop 20%
🗺 New Hampshire: #1,488 of 12,181 inventorsTop 15%
Overall (All Time): #514,200 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
9030099 High pressure discharge lamp with multiple arc tubes Domenic Checca 2015-05-12
D630773 Neck portion of a par lamp Jason Li, Jane Beasley, Harold L. Rothwell, Jr. 2011-01-11
7839066 Strengthened arc discharge lamp Graham Wark, Steven A. Collins, Paul W. Oberlies 2010-11-23
7615930 Shrouded arc discharge lamp suitable for downlighting applications Paul W. Oberlies, Steven A. Collins 2009-11-10
7575343 Faceted par lamp Jason Li, Harold L. Rothwell, Jr. 2009-08-18
7301283 Starting aid for low wattage metal halide lamps Susan L. Callahan 2007-11-27
D543289 Envelope for a light bulb Paul W. Oberlies, Steven A. Collins 2007-05-22
D540961 Light bulb Paul W. Oberlies, Steven A. Collins 2007-04-17
6469445 High CRI metal halide lamp with constant color throughout life Edward H. Nortrup, John A. Scholz 2002-10-22
5486737 Heavily loaded double-ended arc lamp Nanu Brates 1996-01-23