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Expired Canadian patentCanada

Scroll gas compressor

CA 1332593 C · Owner: Fujio, Katuharu · Inventors: Yamamura, Michio; Muramatsu, Shigeru; Fujio, Katuharu

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The scroll gas compressor of the invention is so constructed that an enclosed container is partitioned by a fixed scroll member into a high pressure chamber and a low pressure chamber for gasliquid separating intake refrigerant and storing it the low pressure chamber being disposed at the lower portion and the high pressure chamber at the upper portion of enclosed container, the high pressure chamber disposing therein a drive unit related to a scroll compression mechanism and a lubricating oil sump, and the fixed scroll member serving also as part of the bottom of the lubricating oil sump thereby, providing that is small-sized wide in an operational, speed range, and superior in durability …

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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 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 2011.
  • 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 28, 1989
GrantedOctober 18, 1994
Term endedOctober 18, 2011
Patent numberCA 1332593 C
Classification (IPC)F04C18/04 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJune 28, 1989Patent grantedOct 18, 1994Term endedOct 18, 2011

Sources & verification

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