Patent US4472501A successfully refreshed from Google Patents.
US4472501A
Expired / Lapsed
US
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Process for manufacturing alcohol by fermentation
Assignee: KH Neochem Co Ltd
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Filing: 1982-08-10
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Granted: 1984-09-18
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Expires: 2002-08-10
Abstract
Abstract Ethanol is produced by culturing the microorganism Kluyveromyces cellobiovorus or Kloeckera apiculata in a medium containing, as a carbon source, an assimilable source of xylose, cellobiose or both. The carbon source may be provided in the form of hydrolysates of cellulose containing substances such as cotton, wood, straw or paper which are obtained by acid hydrolysis or enzymatic action. At the completion of culturing, ethanol is removed from the culture in a conventional manner.
Inventors
- 👤 Seigo Takasawa
- 👤 Yasushi Morikawa
- 👤 Kenichiro Takayama
- 👤 Izumi Masunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:05
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/14; C12N1/145; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/06; C12P7/08; C12P7/10; C12R; C12R2001/00; C12R2001/645; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
A process for producing ethanol which comprises culturing a microorganism selected from the group consisting of a microorganism having the identifying characteristics of Kluyveromyces cellobiovorus NRRL Y-12509 and a microorganism having the identifying characteristics of Kloeckera apiculata NRRL Y-12510 and which is capable of producing ethanol and assimilating at least one carbon source selected from the group consisting of xylose and cellobiose, in a medium containing an assimilable source of at least one of said xylose and cellobiose until a recoverable amount of ethanol is produced in the culture liquor and thereafter recovering said ethanol therefrom.
Claim 2
Dependent Claim
96 words
A process for producing ethanol which comprises culturing a microorganism selected from the group consisting of a microorganism having the identifying characteristics of Kluyveromyces cellobiovorus NRRL Y-12509 and a microorganism having the identifying characteristics of Kloeckera apiculata NRRL Y-12510 and which is capable of producing ethanol and assimilating at least one carbon source selected from the group consisting of xylose and cellobiose, in a medium containing an assimilable source of at least one of said xylose and cellobiose until a recoverable amount of ethanol is produced in the culture liquor and thereafter recovering said ethanol therefrom.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein said microorganism is Kluyveromyces cellobiovorus NRRL Y-12509.
Claim 4
Dependent Claim
14 words
A process according to claim 1 wherein said microorganism is Kloeckera apiculata NRRL Y-12510.
Claim 5
Dependent Claim
21 words
A process according to claim 1 wherein said assimilable carbon source is a hydrolyzate of a substance containing cellulose or hemicellulose.
Claim 6
Dependent Claim
32 words
A process according to claim 4 wherein said cellulose or hemicellulose is derived from a substance selected from the group consisting of cotton, wood rice straw, wheat straw, corn stover or paper.
Claim 7
Dependent Claim
19 words
A process according to claim 1 wherein said medium contains cellulose and cellulase to provide said assimilable carbon source.
Claim 8
Dependent Claim
14 words
A process according to claim 1 wherein said microorganism is immobilized in a gel.
Claim 9
Dependent Claim
13 words
A process according to claim 7 wherein said culturing is continuously carried out.
Claim 10
Dependent Claim
30 words
A biologically pure culture of the microorganism Kluyveromyces cellobiovorus having the identifying characteristic of NRRL Y-12509 which is capable of assimilating cellobiose and xylose to produce ethanol in recoverable amounts.
Claim 11
Dependent Claim
30 words
A biologically pure culture of the microorganism Kluyveromyces cellobiovorus having the identifying characteristic of NRRL Y-12509 which is capable of assimilating cellobiose and xylose to produce ethanol in recoverable amounts.
References Cited (Backward Citations)
US3619369A
Cited
US4220721A
Cited
US4350765A
Cited
GB2075546A
Cited
EP0038723A1
Cited
WO1981003032A1
Cited
US4355108A
Cited
US4368268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |