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Expired Canadian patentCanada

Method for detecting bacteria in urine and for treating rheumatoidarthritis, essential hypertension and other diseases associated with bacteriuria

CA 1309647 C · Owner: Hyman, Edward S. · Inventors: Hyman, Edward S.

CIPO record

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Abstract From the Canadian patent

A novel method of urine specimen preparation comprising intense centrifugation and a lipid wash mitigates or prevents loss of bacteria-containing sediment prior to examination. Modifications of the method facilitate examination of urines with interfering constituents such as glucose phosphates, and, soluble and insoluble proteins. By this method bacteria have, been found in the urine of patients suffering from rheumatoid arthritis and essential hypertension. These bacteria were not detected in standard urine preparations. Administration of antibiotic agents effective against the bacteria detected such, as clindamycin, destroyed these bacteria and provided therapeutic relief.

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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 November 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 2009.
  • 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 15, 1987
GrantedNovember 3, 1992
Term endedNovember 3, 2009
Patent numberCA 1309647 C
Classification (IPC)G01N1/30

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 15, 1987Patent grantedNov 3, 1992Term endedNov 3, 2009

Sources & verification

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