Reagent for detecting the presence and extent of periodontal diseases
CA 1310893 C · Owner: Suido, Hirohisa · Inventors: Suido, Hirohisa; Nakamura, Masakazu; Tanaka, Toshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directed to a reagent for detecting the presence and extent of periodontal diseases which diagnoses or prognosticates contraction or progression of said diseases by determining aminopeptidase-like enzymatic activity in a specimen, said reagent comprises as a substrate for the enzyme either or both compounds of the formula:, X-Z-Arg-Y (1), wherein Arg is an arginine residue; X is hydrogen or an amino blocking group; Y is a color developing group attached to the C-terminal of Arg; and Z is an amino acid or peptide residue composed of 1 to 4 amino acids or their blocked derivatives, the C-terminal of which is attached to the Nterminal of Arg, and, …
Read the whole patent
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 December 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.