Expired Canadian patentCanada
Corrugated web structure containing superabsorbent
CA 1253319 A · Owner: Personal Products Company · Inventors: Holtman, Dennis C.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent product is provided having a corrugated fibrous web which contains at least about 10 percent by weight of the web of superabsorbent. The corrugated web is stabilized to retain its transverse folds when wet.
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 May 2, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 2, 2006.
- 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 13, 1984
GrantedMay 2, 1989
Term endedMay 2, 2006
Patent numberCA 1253319 A
Classification (IPC)A61F13/53 +1 more
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.