US5486468A
Expired / Lapsed
US
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Thermostable endoxylanases
Assignee: Clariant Finance BVI Ltd
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Filing: 1994-08-17
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Granted: 1996-01-23
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Expires: 2014-08-17
Abstract
Abstract This invention relates to thermostable enzyme systems from the bacterial strain, Thermomonospora fusca, and their use to modify wood. More particularly, this invention relates to a new bacterial strain of Thermomonospora fusca, designated KW3, and its use to reduce the lignin content of wood.
Inventors
- 👤 Jutta Casimir-Schenkel
- 👤 Armin Fiechter
- 👤 Beat Gysin
- 👤 Wolfgang Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:49
CPC Classifications
C; C12; C12Y; C12Y302/00; C12Y302/01; C12Y302/01032; C12N; C12N1/00; C12N1/20; C12N1/205; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2477; C12N9/248; C12N9/2482; C12Y302/01008; D; D21; D21C; D21C5/00; D21C5/005; C12R; C12R2001/00; C12R2001/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
27 words
A biologically pure culture of a strain of Thermomonospora fusca possessing all the identifying characteristics of the strain with the designation KW3 and deposition number DSM 6013.
Claim 2
Dependent Claim
27 words
A biologically pure culture of a strain of Thermomonospora fusca possessing all the identifying characteristics of the strain with the designation KW3 and deposition number DSM 6013.
Claim 3
Dependent Claim
48 words
A process for the production of delignifying enzymes comprising the process step of: growing the strain according to claim 1 in growth media comprising a suitable carbon source for the strain to grow and to produce extracellular delignifying enzymes; and isolating the extracellular delignifying enzymes from the media.
Claim 4
Dependent Claim
38 words
The process according to claim 2 wherein the strain is grown in the presence of a carbon source selected from the group consisting of: wheat bran, straw, barley bran, mannan, xylan, xylose, galactomannan, glucomannan, mannose and mixtures thereof.
Claim 5
Dependent Claim
19 words
A supernatant composition, comprising a xylanase, produced from a culture of the Thermomonospora fusca strain according to claim 1.
References Cited (Backward Citations)
EP0351655A1
Cited
US5407827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |