Patent Yard Sign in
Expired Canadian patentCanada

Adhesive composition containing a thiocarboxylic acid or a derivatives thereof

CA 1340226 C · Owner: Omura, Ikuo · Inventors: Omura, Ikuo; Kawashima, Mitsunobu

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

An adhesive composition comprising a polymerizable thiocarboxylic acid or a derivative thereof of the general formula, (see fig. I), wherein X1 is an oxygen atom or a sulfur atom and when X1 is an oxygen atom, R1 is an organic group containing at least one olefinic double bond and R2 is a mercapto group, and when X1 is a sulfur atom, R1 is an organic group and R2 is a mercapto group, a halogen atom -OR3, or -SR3, where R3 is a monovalent organic group and, at least one of R1 and R3 has at least one olefinic double bond. This adhesive composition is used as a primer or an adhesive and provides a water-resistant high-strength bond to noble metal adherends which are used in dental and other …

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 December 15, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 14, 1989
GrantedDecember 15, 1998
Term endedDecember 15, 2015
Patent numberCA 1340226 C
Classification (IPC)C09J4/00 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJune 14, 1989Patent grantedDec 15, 1998Term endedDec 15, 2015

Sources & verification

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