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Expired European patentEurope

Use of a hygroscopic diluted solution of salt for adsorption cooling/air conditioning with low temperature heat

EP 0364908 B1 · Applicant: Kali-Chemie Aktiengesellschaft

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Overview

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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.

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Why it's free to use

  • Filed October 14, 1989 and granted August 26, 1992. A European patent lasts at most 20 years from filing, so its term ended October 14, 2009.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by April 14, 2015.
  • 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.
FiledOctober 14, 1989
PublishedApril 25, 1990
GrantedAugust 26, 1992
Term endedOctober 14, 2009
Application numberEP 89119116
Classification (CPC)F24F5/00 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedOct 14, 1989PublishedApril 25, 1990Patent grantedAug 26, 1992Term endedOct 14, 2009

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

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