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WANG SHUI NU

Overview
  • Total Patents
    11
About

WANG SHUI NU has a total of 11 patent applications. Its first patent ever was published in 1991. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets textiles and paper, machines and civil engineering are BAKRON CORP, R M SHARAF MACHINE CO and SUZHOU ZHICHENG MACHINERY CO LTD.

Patent filings in countries

World map showing WANG SHUI NUs patent filings in countries
# Country Total Patents
#1 United States 8
#2 EPO (European Patent Office) 2
#3 Canada 1

Patent filings per year

Chart showing WANG SHUI NUs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Textiles and paper
#2 Machines
#3 Civil engineering

Top inventors

# Name Total Patents
#1 Wang Shui-Nu 11

Latest patents

Publication Filing date Title
US5156105A Thread tension adjusting device for a sewing machine
US5103751A Differential feeding apparatus for a sewing machine
US5131337A Presser of a sewing machine
US5090344A Presser of a sewing machine
US5129338A Adjusting device for a lower knife of a sewing machine
US5129341A Retaining device for a cover of a sewing machine
US5076181A Threading apparatus for a lower looper of an overlock sewing machine
US5069152A Differential feeding apparatus for a sewing machine