Patent Yard Sign in
Expired Canadian patentCanada

Weakly acidic bath agents

CA 1325173 C · Owner: Yorozu, Hidenori · Inventors: Yorozu, Hidenori

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The present invention provides a weakly acidic bath agent comprising carbon dioxide or a carbon dioxidegenerating substance and nicotinic acid or a derivative of nicotinic acid represented by the general formula wherein R represents a group - OR1, in which R1 is a hydrogen atom, a saturated or an unsaturated hydrocarbon group having 1 to 10 carbon atoms, or a benzyl group. The bath agent of the invention exhibits favorable effects such as prevention of roughening of human skin, promotion of blood circulation sensation of body warmth and dampishness of the skin absence, of chill after bathing and the like.

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 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 17, 1988
GrantedDecember 14, 1993
Term endedDecember 14, 2010
Patent numberCA 1325173 C
Classification (IPC)A61K8/19 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 17, 1988Patent grantedDec 14, 1993Term endedDec 14, 2010

Sources & verification

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