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Expired Canadian patentCanada

Multilayer capacitor

CA 1290414 C · Owner: Miller, Robert Anderson · Inventors: Miller, Robert Anderson; Shen, David Tjeng-Ming; Montegari, Frank Alfred

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

Disclosed is a multilayer capacitor consisting of a plurality of laminae with each of the laminae including a conductive plate portion and a non-conductive sheet portion. The conductive plate portion has at least one tab projecting to at least one edge of the conductive plate portion with the maximum number of tabs per conductive plate portion being limited to avoid excessive lateral congestion. The laminae are divided into different groups with the laminae from each group having the same number and location of tabs and with the laminae from different groups differing by at least the location of the tabs. The laminae are interleaved so that:, (a) a lamina from one group alternates with a …

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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1989
GrantedOctober 8, 1991
Term endedOctober 8, 2008
Patent numberCA 1290414 C
Classification (IPC)H01G4/00 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMarch 31, 1989Patent grantedOct 8, 1991Term endedOct 8, 2008

Sources & verification

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