Patent 5300121 Issued on April 5, 1994. Estimated Expiration Date: January 14, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A method of tanning an animal skin with wool or hair attached thereto wherein the animal skin is pickled in an acidic solution and thereafter tanned in a solution containing at least one tanning agent characterised in that the animal skin is picked and tanned while a holding agent is present on the wool or hairs and is thereafter scoured so to remove the holding agent.
Other References
Derwant Abstract Accession No. 85-315318-50 May 1985