Inventor
LIU HUA-TANG
TW36 patents
⚠️ This page may combine multiple inventors who share the name “LIU HUA-TANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SINTAI OPTICAL SHENZHEN CO LTD
19 patentsUSD955242SJun 21, 2022
Rangefinder
SINTAI OPTICAL SHENZHEN CO LTD29 citations93
USD957275SJul 12, 2022
Rangefinder
SINTAI OPTICAL SHENZHEN CO LTD18 citations90
US9030651B2May 12, 2015
Laser range finding device and distance measurement method thereof
SINTAI OPTICAL SHENZHEN CO LTD7 citations84
USD980725SMar 14, 2023
Rangefinder
SINTAI OPTICAL SHENZHEN CO LTD13 citations83
USD1003332SOct 31, 2023
Optical device
SINTAI OPTICAL SHENZHEN CO LTD8 citations80
US11796315B2Oct 24, 2023
Optical device and prism module thereof
SINTAI OPTICAL SHENZHEN CO LTD2 citations73
US11493828B2Nov 8, 2022
Range finder
SINTAI OPTICAL SHENZHEN CO LTD2 citations71
US10520717B2Dec 31, 2019
Binocular capable of measuring distance and prism module thereof
SINTAI OPTICAL SHENZHEN CO LTD4 citations69
US10704903B2Jul 7, 2020
Binocular capable of measuring distance and prism and light transmitter module thereof
SINTAI OPTICAL SHENZHEN CO LTD2 citations67
US10234283B2Mar 19, 2019
Binoculars rangefinder
SINTAI OPTICAL SHENZHEN CO LTD6 citations66
US11536932B2Dec 27, 2022
Optical lens assembly
SINTAI OPTICAL SHENZHEN CO LTD0 citations60
US12152908B2Nov 26, 2024
Range finder and lens assembly for display thereof
SINTAI OPTICAL SHENZHEN CO LTD0 citations56
US11604064B2Mar 14, 2023
Range finder and lens assembly for display thereof
SINTAI OPTICAL SHENZHEN CO LTD1 citations56
US12352532B2Jul 8, 2025
Aiming devices and methods thereof
SINTAI OPTICAL SHENZHEN CO LTD0 citations52
US11953705B2Apr 9, 2024
Optical device and prism module thereof
SINTAI OPTICAL SHENZHEN CO LTD0 citations52
US12228714B2Feb 18, 2025
Optical system
SINTAI OPTICAL SHENZHEN CO LTD0 citations47
US11022170B2Jun 1, 2021
Rotating shaft mechanism
SINTAI OPTICAL SHENZHEN CO LTD0 citations47
US10520792B2Dec 31, 2019
Range finder
SINTAI OPTICAL SHENZHEN CO LTD0 citations38
US9746589B2Aug 29, 2017
Range finder and prism assembly thereof
SINTAI OPTICAL SHENZHEN CO LTD0 citations37
ASIA OPTICAL CO INC
13 patentsUSD611848SMar 16, 2010
Laser distance meter
ASIA OPTICAL CO INC43 citations92
USD539680SApr 3, 2007
Laser distance meter
ASIA OPTICAL CO INC28 citations92
USD579805SNov 4, 2008
Laser ranging finder
ASIA OPTICAL CO INC17 citations90
US7304727B2Dec 4, 2007
Laser distance-measuring device
ASIA OPTICAL CO INC24 citations89
US7471377B2Dec 30, 2008
Laser distance measuring system with a shutter mechanism
ASIA OPTICAL CO INC44 citations87
US8018580B2Sep 13, 2011
Laser range finding device and distance measurement method thereof
ASIA OPTICAL CO INC12 citations82
US7395604B2Jul 8, 2008
Laser level with temperature control device and temperature control method thereof
ASIA OPTICAL CO INC13 citations80
US7228635B2Jun 12, 2007
Laser tilt apparatus and the method thereof
ASIA OPTICAL CO INC13 citations80
US6501539B2Dec 31, 2002
High precision laser range finder with an automatic peak control loop
ASIA OPTICAL CO INC13 citations73
US6909551B1Jun 21, 2005
Side by side laser level device
ASIA OPTICAL CO INC5 citations62
US7373724B2May 20, 2008
Laser level with improved leveling adjustability
ASIA OPTICAL CO INC5 citations60
US7242540B1Jul 10, 2007
Axis-adjustable optical device and optical instrument utilizing the same
ASIA OPTICAL CO INC6 citations60
US7800737B2Sep 21, 2010
Laser range finding device and distance measurement method thereof
ASIA OPTICAL CO INC1 citations50