Prognostic value of rheumatoid factor isotypes and their association with disease activity
CA 1261257 A · Owner: Teitsson, Ingvar · Inventors: Valdimarsson, Helgi; Teitsson, Ingvar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The levels of the IgA and IgM isotypes of rheumatoid factor (RF) in the blood of an individual afflicted with rheumatoid arthritis have been found to correlate with prognosis for the course of the disease. Those individuals showing above normal levels of IgA RF proceeded to a severe disease state with the appearance of bone erosions while those showing above normal levels of IgM RF did not proceed to such a severe state. Furthermore, disease activity in such individuals has been found to correlate with fluctuations in the level of IgA RF in the blood.
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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.