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Reticulated cellulose and methods and microorganisms for the production thereof

Patent 5079162 Issued on January 7, 1992. Estimated Expiration Date: Icon_subject January 7, 2009. 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

Fiber production from continuous cultivation of micro-organisms
Patent #: 4320198
Issued on: 03/16/1982
Inventor: Mynatt

Production of a cellulose-synthetic polymer composite fiber
Patent #: 4378431
Issued on: 03/29/1983
Inventor: Brown, Jr.

Absorbent laminate structure
Patent #: 4578068
Issued on: 03/25/1986
Inventor: Kramer ,   et al.

Liquid loaded pad for medical applications
Patent #: 4588400
Issued on: 05/13/1986
Inventor: Ring ,   et al.

Process for the production of microbial cellulose Patent #: 4929550
Issued on: 05/29/1990
Inventor: Byrom

Inventors

Application

No. 196496 filed on 05/19/1988

US Classes:

435/252.1, Bacteria or actinomycetales; media therefor435/101, Polysaccharide of more than five saccharide radicals attached to each other by glycosidic bonds435/823, Acetobacter536/56Cellulose or derivative

Examiners

Primary: Robinson, Douglas W.
Assistant: Marx, Irene

Attorney, Agent or Firm

Foreign Patent References

  • 0114481 EP. 08/13/1984
  • 0186495 EP. 07/13/1986
  • 0200409 EP. 11/13/1986
  • 0206830 EP. 12/13/1986
  • 243151 EP. 10/13/1987
  • 0279506 EP. 01/13/1988
  • 0346507 EP. 12/13/1989
  • 0347481 EP. 12/13/1989
  • 088307 DD. 03/13/1972
  • 92136 DD. 08/13/1972
  • 237328 DD. 07/13/1986
  • 212295 JP. 09/13/1986
  • 87099 JP. 04/13/1987
  • 1243997 JP. 09/13/1989
  • 8602095 WO. 04/13/1986
  • 89/12107 WO. 12/13/1989
  • 8911783 WO. 12/13/1989
  • 1570487 GB. 07/13/1980
  • 2131701 GB. 06/13/1984

International Classes

C12N 001/20
C12P 019/04
C08B 037/00

Abstract

A method and media for producing bacterial cellulose under agitated culture conditions resulting in sustained production over an average of 70 hours of at least 0.1 g/liter per hour are achieved. A unique reticulated cellulose product is produced using the methods and conditions claimed, and may be in the form of a sheet characterized by substantial resistance to densification and great tensile strength when produced by sheet forming means.Strains of Acetobacter that are stable under agitated culture conditions and that exhibit substantially reduced gluconic and keto-gluconic acids production are described.

Other References

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