Process for manufacture of battery carbon black
CA 1165095 A · Owner: Columbian Chemicals Company · Inventors: Glasstetter, Fred E.; Eckert, Frank J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
55Z2, DLT:lw, 4/27/79, PROCESS FOR THE MANUFACTIJRE OF BATTERY CARBON BLACK ABSTRACT, Furnace carbon black process useful for the production of a carbon black used as an ingredient in dry cell battery compositions is disclosed which comprises heating a carbon black feedstock having a DPB ranging from 200 to 250 cc/l00g and a particle size distribution ranging from 55 to 130 millimicrons to a temperature ranging from 1400°C to 2400°C under an inert atmosphere, thereby producing a carbon black having a mean particle size distribution ranging from about 50 to about 120 millimicrons a dibutylphalate absorption (DBP) ranging from about 210 to about 270cc/l00g, a nitrogen surface area ranging …
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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
- 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.