System and method for recycling materials
CA 2095979 A1 · Owner: Watson, Dana L. · Inventors: Watson, Dana L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, First and second washing machines (13 15) are, utilized to clean plastic (87) and cellulose (53) from disposed diapers (49) for recycling. The disposed diapers (49) are loaded into the first washing machine (13) and, while being agitated by rotation of a basket (37) and by air supplied by a blower (23) are washed in, water, alkali and soap. During washing the cellulose, becomes separated from the plastic. The cellulose is drained out of the first washing machine with the water leaving the plastic in the first washing machine. The plastic is then cleaned in the first washing machine. A pump (17) transfers the cellulose and water to the second washing machine (15). …
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 May 11, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2015.
- 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.