Patent Yard Sign in
Expired European patentEurope

Aluminium alloy extruded tube material for heat exchanger using natural refrigerant

EP 1721998 B1 · Applicant: DENSO CORPORATION

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 May 9, 2006 and granted October 27, 2010. A European patent lasts at most 20 years from filing, so its term ended May 9, 2026.
  • 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.
FiledMay 9, 2006
PublishedNovember 15, 2006
GrantedOctober 27, 2010
Term endedMay 9, 2026
Application numberEP 06009528
Classification (CPC)C22C21/00

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedMay 9, 2006PublishedNov 15, 2006Patent grantedOct 27, 2010Term endedMay 9, 2026

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.