U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Process for the treatment of wool skins

Patent 5300121 Issued on April 5, 1994. Estimated Expiration Date: Icon_subject 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.

Patent References

Process for the production of fur skins Patent #: 4217104
Issued on: 08/12/1980
Inventor: Graf

Inventors

Assignee

Application

No. 823064 filed on 01/14/1992

US Classes:

8/94.14, Fur8/94.18, With organic material8/94.19R, Tanning8/94.21, Organic material8/94.22, Fat, fatty oil, fatty oil acid or salt thereof8/128.1Natural wool or silk

Examiners

Primary: McAvoy, Ellen M.

Attorney, Agent or Firm

Foreign Patent References

  • 129145 AU. 12/13/2012
  • 256188 AU. 03/13/1961
  • 1601476 AU. 07/13/1976
  • 0016014 AU. 10/13/1979
  • 6362380 AU. 10/13/1980

International Class

C14C 001/00

Foreign Application Priority Data

1987-04-28 AU

Abstract

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
  • Derwant Abstract Accession No. 30263 D-17 (Aug. 1980)
  • Derwant Abstract Accession No. 70859C-40 (Feb. 1980)
  • Encyclopedia of Chemical Technology, 3rd Edition, vol. 14, p. 220, lines 12-13, Kirk-Othmer (1981)
  • Derwant Abstract No. 92243B-51 (Mar. 1979)
  • Derwant Abstract Accession No. 86001Y-48 (Apr. 1977)
  • Derwant Abstract Accession No. 84193960-31 (Nov. 1983)
  • Derwant Soviet Inventions Illustrated, Apr. 1972 (SUA312872)
  • Derwant Soviet Inventions Illustrated, Sep. 1966 (SUA208175)
  • C. Bird, in The Theory and Practice of Wool Dyeing, Society of Dyers and Colorists, Chapter 3 at p. 46 (1972)
  • J. Ward, Tannage of Medical Sheepskins, LIRI Research Bulletin No. 718, at p. 1 (1976)
  • P. Briggs, Gloving, Clothing and Special Leathers, Tropical Products Institute, Chapter 5, at p. 67 (1981)
  • C. Cole, Proceedings of a Seminar: Leather Technology, Federated Tanners Association of Australia, Sydney, at p. 1 (1983)
  • C. M. White and C. C. Wilcock, Dyeing with Coal-Tar Dyestuffs; Bailliere, Tindall and Cox; 1952; p. 139
  • H. Kaplan, Furskin Processing, Permagon Press, p. 213 (1971)
  • P. S. Briggs, Wool Sheepskins, Tropical Products Institute, Chapter 5, pp. 68-69 (1981
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