P

Inventor

LOGAN MARK CAMPBELL

US10 patents
⚠️ This page may combine multiple inventors who share the name “LOGAN MARK CAMPBELL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ACUITY BRANDS INC

4 patents
USD553781SOct 23, 2007

Volumetric downlight light fixture

ACUITY BRANDS INC71 citations97
US6848798B1Feb 1, 2005

Emergency lighting unit/exit sign combination

ACUITY BRANDS INC28 citations90
US6499866B1Dec 31, 2002

Emergency lighting unit/exit sign combination

ACUITY BRANDS INC31 citations90
US7563004B2Jul 21, 2009

Volumetric downlight light fixture

ACUITY BRANDS INC9 citations84

NSI ENTERPRISES INC

2 patents
US5954423ASep 21, 1999

Light distribution diffuser for exit signs and the like illuminated by LED arrays

NSI ENTERPRISES INC92 citations97
US5797673AAug 25, 1998

Emergency lighting unit/exit sign combination

NSI ENTERPRISES INC80 citations94

DIVERSITECH CORP

2 patents
US10744525B1Aug 18, 2020

Multi-cartridge drain guns, accessories therefor, and methods of use and manufacture thereof

DIVERSITECH CORP3 citations69
US11731152B2Aug 22, 2023

Multi-cartridge drain guns, accessories therefor, and methods of use and manufacture thereof

DIVERSITECH CORP0 citations59

NAT SERVICE IND INC

1 patent
US5887968AMar 30, 1999

Light distribution reflector for exit signs and the illuminated by LED arrays

NAT SERVICE IND INC96 citations96

NSI ENTPR INC

1 patent
US6142648ANov 7, 2000

Emergency lighting unit/exit sign combination

NSI ENTPR INC40 citations90