Process for the production of a transformer oil
CA 1103601 A · Owner: Deutsche Texaco Aktiengesellschaft · Inventors: Kramer, Ulrich; Klippel, Gottfried; Geistert, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A TRANSFORMER OIL (D#71,200-DTA-131-F), ABSTRACT OF THE DISCLOSURE A process is provided for the production of a stable, age-resisting mineral oil composition which comprises subjecting a paraffin base mineral crude oil to distillation to produce a distillate fraction boiling in the range of 270 to 400°C. solvent dewaxing said distillate fraction, solvent extracting said dewaxed distillate portion to produce a solvate fraction and an extract fraction, refining said solvate fraction concentrating and refining said extract fraction and adding said refined, concentrated extract portion with said refined solvate fraction. I
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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 June 23, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 1998.
- 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.