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Sized organic derivative of cellulose yarn

US 2,448,571 A · Inventors: BALCH RALPH H et al.

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Granted September 7, 1948. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by September 7, 1965.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 18, 1945
GrantedSeptember 7, 1948
Term endedSeptember 7, 1965
Application number—
Classification (CPC)D06M15/15 +1 more
Length2 pages

Timeline

Timeline From USPTO dates

1946194819501952195419561958196019621964Application filedJuly 18, 1945Patent grantedSep 7, 1948Term endedSep 7, 1965

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Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comJustia PatentsFull text, claims and classification.patents.justia.comFreePatentsOnlineFull text and PDF.freepatentsonline.comEspacenetForeign family and legal status.European Patent Office

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