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 76–96 of 96 patents

Patent #TitleCo-InventorsDate
D348746 Indirect lighting fixture Utkan Salman 1994-07-12
D348534 Indirect lighting fixture Utkan Salman 1994-07-05
D348533 Indirect lighting fixture Utkan Salman 1994-07-05
5276597 Configurable furniture integrated ambient lighting system and method Utkan Salman 1994-01-04
D341439 Indirect lighting fixture Utkan Salman 1993-11-16
5217301 Lighting fixture having an unobtrusive surface switch Willi Munz 1993-06-08
D330438 Indirect lighting fixture Utkan Salman 1992-10-20
D318929 Indirect luminaire Utkan Salman 1991-08-06
RE33593 Luminaire for indirect lighting Peter Y. Y. Ngai 1991-05-21
RE33471 Method for indirect lighting Peter Y. Y. Ngai 1990-12-04
D311967 Wall mounted lensed indirect luminaire Utkan Salman 1990-11-06
D311596 Wall mounted lensed indirect luminaire Utkan Salman 1990-10-23
4939627 Indirect luminaire having a secondary source induced low brightness lens element Peter Y. Y. Ngai 1990-07-03
4706170 Lighting fixture hanger unit for a modular lighting system Henry H. Iwahashi 1987-11-10
4667275 Luminaire for indirect lighting Peter Y. Y. Ngai 1987-05-19
4660131 Method for indirect lighting Peter Y. Y. Ngai 1987-04-21
4644454 Lensed indirect luminaire having improved light distribution control Peter Y. Y. Ngai 1987-02-17
4573111 Linear light passing media having certain striped characteristics Peter Y. Y. Ngai 1986-02-25
D274657 Luminaire for indirect lighting Henry H. Iwahashi 1984-07-10
4420798 Adjustable overhead lighting system Henry H. Iwahashi 1983-12-13
4390930 Indirect lighting fixture with improved light control Peter Y. Y. Ngai 1983-06-28