PN

Peter Y. Y. Ngai

AH Abl Ip Holding: 64 patents #4 of 567Top 1%
AB Acuity Brands: 13 patents #9 of 95Top 10%
PL Peerless Lighting: 11 patents #3 of 9Top 35%
NE Nsi Enterprises: 5 patents #7 of 58Top 15%
📍 Alamo, CA: #2 of 279 inventorsTop 1%
🗺 California: #2,324 of 386,348 inventorsTop 1%
Overall (All Time): #15,186 of 4,157,543Top 1%
98
Patents All Time

Issued Patents All Time

Showing 76–98 of 98 patents

Patent #TitleCo-InventorsDate
D480503 Luminaire Douglas J. Herst, Michael Trung Tran 2003-10-07
D480530 Luminaire baffle structure Douglas J. Herst, Michael Trung Tran 2003-10-07
D480172 Luminaire Douglas J. Herst, Michael Trung Tran 2003-09-30
D480168 Luminaire Douglas J. Herst, Michael Trung Tran 2003-09-30
6273592 Luminaire having baffles with observable visual accent Douglas J. Herst, Hue Ly 2001-08-14
D441891 Luminaire housing Douglas J. Herst, Utkan Salman 2001-05-08
6193394 Direct-indirect luminaire having improved down light glare control Douglas J. Herst 2001-02-27
D435310 Luminaire housing Douglas J. Herst, Utkan Salman 2000-12-19
6056416 Indirect luminaire having an upper reflector for improved brightness control Hue Ly 2000-05-02
5884994 Direct-indirect luminaire with improved down light control Douglas J. Herst 1999-03-23
5530628 Task light 1996-06-25
D362315 Direct indirect fluorescent lighting fixture Douglas J. Herst, Utkan Salman 1995-09-12
5192128 Lensed luminaire with lens brightness control and method 1993-03-09
5051878 Luminaire having a lensed reflector system for improved light distribution control 1991-09-24
RE33593 Luminaire for indirect lighting Douglas J. Herst 1991-05-21
RE33471 Method for indirect lighting Douglas J. Herst 1990-12-04
4939627 Indirect luminaire having a secondary source induced low brightness lens element Douglas J. Herst 1990-07-03
4698734 Lensed indirect luminaire with side angle brightness control 1987-10-06
4667275 Luminaire for indirect lighting Douglas J. Herst 1987-05-19
4660131 Method for indirect lighting Douglas J. Herst 1987-04-21
4644454 Lensed indirect luminaire having improved light distribution control Douglas J. Herst 1987-02-17
4573111 Linear light passing media having certain striped characteristics Douglas J. Herst 1986-02-25
4390930 Indirect lighting fixture with improved light control Douglas J. Herst 1983-06-28