Patent Yard Sign in
Expired European patentEurope

Method for producing an effervescent laminate structure

EP 1663644 B1 · Applicant: THE PROCTER & GAMBLE COMPANY

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

Google PatentsEPO PDF

Why it's free to use

  • Filed September 24, 2004 and granted April 20, 2011. A European patent lasts at most 20 years from filing, so its term ended September 24, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledSeptember 24, 2004
PublishedJune 7, 2006
GrantedApril 20, 2011
Term endedSeptember 24, 2024
Application numberEP 04789087
Classification (CPC)B32B37/12 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedSep 24, 2004PublishedJune 7, 2006Patent grantedApril 20, 2011Term endedSep 24, 2024

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.