DH

Douglas J. Herst

PL Peerless Lighting: 40 patents #1 of 9Top 15%
AB Acuity Brands: 35 patents #1 of 95Top 2%
NE Nsi Enterprises: 13 patents #1 of 58Top 2%
📍 Ross, CA: #1 of 42 inventorsTop 3%
🗺 California: #2,419 of 386,348 inventorsTop 1%
Overall (All Time): #15,763 of 4,157,543Top 1%
96
Patents All Time

Issued Patents All Time

Showing 26–50 of 96 patents

Patent #TitleCo-InventorsDate
D480502 Luminaire Peter Y. Y. Ngai, Michael Trung Tran 2003-10-07
D480503 Luminaire Peter Y. Y. Ngai, Michael Trung Tran 2003-10-07
D480530 Luminaire baffle structure Peter Y. Y. Ngai, Michael Trung Tran 2003-10-07
D480168 Luminaire Peter Y. Y. Ngai, Michael Trung Tran 2003-09-30
D480172 Luminaire Peter Y. Y. Ngai, Michael Trung Tran 2003-09-30
D477105 Lighting fixture assembly Utkan Salman 2003-07-08
D476771 Lighting fixture assembly connector arm Utkan Salman 2003-07-01
D473007 Lighting fixture housing edge Utkan Salman 2003-04-08
D472667 Lighting fixture housing Utkan Salman 2003-04-01
D472666 Lighting fixture housing end Utkan Salman 2003-04-01
D472665 Lighting fixture housing end Utkan Salman 2003-04-01
D472668 Lighting fixture housing Utkan Salman 2003-04-01
6428190 Electrical power cord manager for a lighting fixture Utkan Salman 2002-08-06
6345800 Universal load-bearing hanger bracket and method for hanging a lighting fixture below a grid ceiling system at on-grid or off-grid locations Michael Trung Tran 2002-02-12
6273592 Luminaire having baffles with observable visual accent Peter Y. Y. Ngai, Hue Ly 2001-08-14
6247828 Unitary extruded housing for direct-indirect luminaire 2001-06-19
D441891 Luminaire housing Utkan Salman, Peter Y. Y. Ngai 2001-05-08
6193394 Direct-indirect luminaire having improved down light glare control Peter Y. Y. Ngai 2001-02-27
D435310 Luminaire housing Utkan Salman, Peter Y. Y. Ngai 2000-12-19
D434519 End cap for a luminaire housing Utkan Salman 2000-11-28
D426338 Housing for mostly indirect luminaire Utkan Salman 2000-06-06
D421815 Wall wash luminaire Utkan Salman 2000-03-21
D421147 Luminaire end cap Utkan Salman 2000-02-22
D418626 Section of linear luminaire housing Utkan Salman 2000-01-04
D417030 Section of linear luminaire housing Utkan Salman 1999-11-23