Learn more

CHEMSTRAND CORP

Overview
  • Total Patents
    915
About

CHEMSTRAND CORP has a total of 915 patent applications. Its first patent ever was published in 1949. It filed its patents most often in United States, France and United Kingdom. Its main competitors in its focus markets macromolecular chemistry and polymers, textiles and paper and machines are TONGCHENG XIANGTAI PLASTIC IND CO LTD, TONGCHENG XINRUI CONSTRUCTION ENG CO LTD and JIANGSU YABAO INSULATION MAT CO LTD.

Patent filings in countries

World map showing CHEMSTRAND CORPs patent filings in countries
# Country Total Patents
#1 United States 242
#2 France 193
#3 United Kingdom 127
#4 Canada 105
#5 Belgium 104
#6 Switzerland 54
#7 Germany 43
#8 Denmark 18
#9 Spain 13
#10 Ireland 8
#11 Greece 7
#12 Austria 1

Patent filings per year

Chart showing CHEMSTRAND CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ham George E 72
#2 Jenkins Lloyd T 38
#3 Craig Alfred B 29
#4 Holmes Richard R 27
#5 Chemstrand Corporation The 21
#6 De Witt Hobson D 16
#7 Huffman William A H 13
#8 Beindorff Arthur B 12
#9 Alfred B Craig 10
#10 Bromley James E 9

Latest patents

Publication Filing date Title
US3313756A Solutions of polyvinylene carbonate
IE25549L Filament crimping apparatus
ES273507A1 Improvements in thread tension control devices (Machine-translation by Google Translate, not legally binding)
ES273373A1 System of storage and feed of thread for relief, in combination with a circular machine to make point (Machine-translation by Google Translate, not legally binding)
IE25342L Preparing bulked yarn
ES273374A1 Make it punto (Machine-translation by Google Translate, not legally binding)
IE25257L Textured filament yarn
IE25339L Filament severing devices
IE25222L Crimping thermoplastic yarn
IE25255L Yarn crimping apparatus
US3253880A Sulfonation of acrylonitrile polymers with sulfur trioxide to increase dye receptivity
FR1344164A Improvements in the treatment of acrylonitrile-based articles
GB904008A Wet spinning of polyethylene
IE25113L Paper products
GB896493A Method and apparatus for stretching and twisting continuous filament yarn
GB886071A Method for the purification of hexamethylenediamine
IE24348L Yarn treating apparatus
GB905247A Method and apparatus for treating filament yarn to impart potential crimp thereto
GB901069A Method and apparatus for processing nylon filament yarn
US2974512A Textile treating apparatus