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Process for producing retardation film of thermoplastic resin

US 2010/0283191 A1 · Assignee: Sumitomo Chemical Company, Limited · Inventors: Takahata; Hiroaki 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

  • Published November 11, 2010, and no patent has issued anywhere in its US family since.
  • Nothing has been filed in its family for more than seven years, so it is very unlikely to still be pending.
  • This status is inferred from USPTO records. Confirm it on Patent Center before relying on it.
FiledSeptember 18, 2008
PublishedNovember 11, 2010
StatusAbandoned (inferred)
Application number12/679267
Classification (CPC)B29C55/06 +2 more
Length14 pages

Timeline

Timeline From USPTO dates

20092010Application filedSep 18, 2008Application publishedNov 11, 2010

Sources & verification

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

Cross-check elsewhere

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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