Patent Yard Sign in
Expired Canadian patentCanada

Method of applying interleaving material to glass sheets

CA 1213478 A · Owner: Ppg Industries Ohio, Inc. · Inventors: Duffer, Paul F.; Kelly, Joseph D.; Franz, Helmut

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A method is disclosed for applying a powdered interleaving material to a glass surface in the form of an aqueous slurry and an article of manufacture comprising a plurality of glass sheets stacked in facing relationship wherein the interfacing surfaces have adhering thereto a uniform distribution of a powdered interleaving material applied as a slurry and thereafter dried.

Read the whole patent

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

Why it's free to use

  • Granted November 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 1982
GrantedNovember 4, 1986
Term endedNovember 4, 2003
Patent numberCA 1213478 A
Classification (IPC)B05D5/08

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedMay 10, 1982Patent grantedNov 4, 1986Term endedNov 4, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.