Absorption body for an absorbing article
CA 2117342 C · Owner: Sca Hygiene Products Aktiebolag · Inventors: Widlund, Urban; Annergren, Jeanette; Osterdahl, Eje
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an absorbent body (3) which is intended to form the absorbent element in an absorbent article, such as a diaper, an incontinence guard or a sanitary napkin and includes a first absorbent layer (16) which in use, is, intended to face towards the wearer and a second absorbent layer (17) which is intended in use, to face away from the wearer. According to the invention the absorbent body (3) includes at least two mutually different cellulose fluffs wherein the major part of, the fibre structure of the first absorbent layer (16) is comprised of a first type of cellulose fluff having low liquid-spreading ability and a critical bulk which exceeds 8 cm3/g at 2.5 …
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
- Filed February 10, 1992 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 2014.
- 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.