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Expired Canadian patentCanada

Fusible powdered metal paste

CA 1319310 C · Owner: Scm Corporation · Inventors: Hwang, Jennie Shi-Lan

CIPO record

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

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Abstract From the Canadian patent

There is provided an inorganic salt-free anhydrous, noncorrosive powdered solder metal paste and vehicle therefor which vehicle is characterized by the presence therein of a nonaqueous resinous binder and a nonaqueous organic liquid having a surface tension or surface energy of from 43 to 65 dynes/cm. and higher at 20°C. When powdered solder metal or powdered solder metal alloy is distributed in such a vehicle in an amount sufficient to form a paste a deposit will not, undergo hot slump at elevated temperatures. The pastes and vehicles are free of inorganic metal salts.

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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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 16, 1986
GrantedJune 22, 1993
Term endedJune 22, 2010
Patent numberCA 1319310 C
Classification (IPC)B23K35/36 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedOct 16, 1986Patent grantedJune 22, 1993Term endedJune 22, 2010

Sources & verification

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