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Reticulated cellulose and methods of microorganisms for the production thereof

Patent 6329192 Issued on December 11, 2001. Estimated Expiration Date: Icon_subject December 11, 2018. 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.

Liquid loaded pad for medical applications
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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

Reticulated cellulose and methods and microorganisms for the production thereof Patent #: 5079162
Issued on: 01/07/1992
Inventor: Ben-Bassat, et al.

Inventors

Assignee

Application

No. 070650 filed on 06/01/1993

US Classes:

435/252.1, Bacteria or actinomycetales; media therefor435/101, Polysaccharide of more than five saccharide radicals attached to each other by glycosidic bonds435/170, Using bacteria435/823, Acetobacter536/56Cellulose or derivative

Examiners

Primary: Witz, Jean C.
Assistant: Ware, Deborah K.

Attorney, Agent or Firm

Foreign Patent References

  • 088307 DE. 03/13/1972
  • 92136 DE. 08/13/1972
  • 237328 DE. 07/13/1986
  • 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
  • 8911783 EP. 12/13/1989
  • 8912107 EP. 12/13/1989
  • 580595 GB. 09/13/2012
  • 1570487 GB. 07/13/1980
  • 2131701 GB. 06/13/1984
  • 212295 JP. 09/13/1986
  • 87099 JP. 04/13/1987
  • 1243997 JP. 09/13/1989
  • 8602095 WO. 04/13/1986

International Classes

C12N 001/00
C12N 001/12
C12N 001/20
C12P 001/04

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 converted to of a sheet characterized by substantial resistance to densification and great tensile strength when produced by sheet forming means. Acetobacter strains are identified as stable under agitated culture conditions and exhibit substantially reduced gluconic and keto-gluconic acids production.

Other References

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