Apparatus for magnetically treating flowing liquids
CA 2174724 A1 · Owner: Carpenter, Roland K. · Inventors: Carpenter, Roland K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus (14) is disclosed including first and second housing halves (16a 16b) which are welded together to attach the apparatus (14) to a pup joint pipe (10) installed in an oil well casing pipe (12). The housing (16) includes a cylindrical portion (18) and first and second frustoconical portions (20) at opposite axial ends thereof. Axially extending L-shaped spacers (22) are secured to the inside surface of the cylindrical portion (18) and include longitudinal edges which abut with the outer surface of the pipe (10). Series of axially spaced first and second, right parallelepiped shaped, magnets (28, 30) are sandwiched between the inside surface of the cylindrical portion (18) and the …
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 October 20, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2016.
- 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.