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Expired Canadian patentCanada

Lps-producing bacteria, lpss, and lps-containing medicines and veterinary medicines

CA 2049548 C · Owner: Soma, Gen-Ichiro · Inventors: Oshima, Haruyuki; Mizuno, Den'Ichi; Yoshimura, Kiyoshi

CIPO record

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Abstract From the Canadian patent

Novel LPS having the following physical properties novel, bacilli providing those LPS, and novel immunity stimulators analgesics, and antiwithdrawal agents, and novel veterinary immunity stimulators, analgesics, and antiwithdrawal agents containing LPS selected from the group consisting of those LPSs and mixtures thereof. LPS1 Dominant molecular weight: 5,000 ~ 1,000 as determined by SDS-PAGE method, Phosphorus number: 2 ~ 1 / 5,000 (m. w.) Hexosamine number: 9 ~ 1 / 5,000 (m. w.) KDO number: 2 ~ 1 / 5,000 (m. w.), LPS2 Dominant molecular weight: 6,500 ~ 2,500 as determined by SDS-PAGE method, Phosphorus number: 1 to 2 / 5,000 (m. w.) Hexosamine number: 7 ~ 1 / 5,000 (m. w.) KDO number: 1 …

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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

  • Filed August 20, 1991 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 20, 1991
GrantedJuly 2, 2002
Term endedAugust 20, 2011
Patent numberCA 2049548 C
Classification (IPC)C12N1/20 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedAug 20, 1991Patent grantedJuly 2, 2002Term endedAug 20, 2011

Sources & verification

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