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TSENG HSIEN CHANG

Overview
  • Total Patents
    39
  • GoodIP Patent Rank
    87,535
  • Filing trend
    ⇩ 28.0%
About

TSENG HSIEN CHANG has a total of 39 patent applications. It decreased the IP activity by 28.0%. Its first patent ever was published in 1993. It filed its patents most often in Taiwan, Germany and United States. Its main competitors in its focus markets textiles and paper and machine tools are SUZHOU CHINT ENTPR DEV CO LTD, MORIMOTO MFG CO and ARBETTER FELLING MACHINE COMPA.

Patent filings in countries

World map showing TSENG HSIEN CHANGs patent filings in countries
# Country Total Patents
#1 Taiwan 19
#2 Germany 10
#3 United States 9
#4 China 1

Patent filings per year

Chart showing TSENG HSIEN CHANGs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Tseng Hsien-Chang 19
#2 Tseng Hsien Chang 18
#3 Chang Tseng Hsien 1
#4 Zeng Xian Chang 1

Latest patents

Publication Filing date Title
US10767293B1 Sewing-thread pre-stress device for a sewing machine
US2020340158A1 Positioning device for an ally movable tongue seat
TW202031961A Positioning device for a movable tongue seat with rotating motion
US2020109500A1 Feed-dog stabilizing mechanism for a sewing machine
DE102018120752A1 Sewing machine-specific cloth feeder tooth stabilizer
TWI684689B Feeding gear stabilizing mechanism of sewing machine
US2019242046A1 Hollow pipe joint structure for a sewing machine
TW201930681A Hollow pipe joint structure for sewing machine
US2019169772A1 Knee operated lifting mechanism for a presser foot of a sewing machine
DE102017125419A1 Knee-operated lifting device for sewing machine presser feet
TW201915253A Knee operated lifting mechanism for a presser foot of sewing machine
TW201827666A Positioning structure of an eccentric movable tongue seat
TW201615916A Cloth feeding tooth differential mechanism for a sewing machine
TW201538820A Sewing machine with a wire-feeding and air-supplying selection mechanism
TW201529924A Sewing machine structure with a driving selection device being fixed when an upper ring hook is not driven
TW201445019A Thread hooking device for sewing machine slot assembly
TW201437451A Cutting device for a sewing machine
TW201404967A Driving structure for an upper circular sewing hook of a sewing machine
TW201313980A Device for controlling sewing machine patterns and the method thereof
TW201309860A Guiding device for cloth feeding mechanism