Patent US4011135A successfully refreshed from Google Patents.
US4011135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of L(+)-tartaric acid
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1976-01-19
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Granted: 1977-03-08
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Expires: 1996-01-19
Abstract
Abstract L(+)-tartaric acid is produced in a high efficiency from cis-epoxysuccinic acid by a microorganism belonging to the genus Pseudomonas, Agrobacterium or Rhizobium.
Inventors
- 👤 Yoshio Kamatani
- 👤 Hisayoshi Okazaki
- 👤 Ko Imai
- 👤 Noriaki Fujita
- 👤 Yoshio Yamazaki
- 👤 Katsuhiko Ogino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:07
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/40; C12P7/44; C12P7/46; Y; Y10; Y10S; Y10S435/00; Y10S435/812; Y10S435/8215; Y10S435/822; Y10S435/874; Y10S435/878
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A method for producing L(+)-tartaric acid or salts thereof by hydrolysis of cis-epoxysuccinic acid which comprises (1) bringing a culture or processed matter containing an enzyme system thereof, obtained from a microorganism which belongs to the genus Pseudomonas, Agrobacterium or Rhizobium and said culture or enzyme system being capable of hydrolyzing cis-epoxysuccinic acid or salts thereof, thereby forming L(+)-tartaric acid, into contact with cis-epoxysuccinic acid or salts thereof in an aqueous medium at 5° to 50° C for a time sufficient to produce L(+)-tartaric acid and (2) recovering the so-formed L(+)-tartaric acid.
Claim 2
Independent Claim
92 words
A method for producing L(+)-tartaric acid or salts thereof by hydrolysis of cis-epoxysuccinic acid which comprises (1) bringing a culture or processed matter containing an enzyme system thereof, obtained from a microorganism which belongs to the genus Pseudomonas, Agrobacterium or Rhizobium and said culture or enzyme system being capable of hydrolyzing cis-epoxysuccinic acid or salts thereof, thereby forming L(+)-tartaric acid, into contact with cis-epoxysuccinic acid or salts thereof in an aqueous medium at 5° to 50° C for a time sufficient to produce L(+)-tartaric acid and (2) recovering the so-formed L(+)-tartaric acid.
Claim 3
Dependent Claim
12 words
A method according to claim 1, wherein the microorganism is Rhizobium validum.
Claim 4
Dependent Claim
12 words
A method according to claim 1, wherein the microorganism is Agrobacterium aureum.
Claim 5
Dependent Claim
14 words
A method according to claim 1, wherein the microorganism is Pseudomonas species IFO 13645.
Claim 6
Dependent Claim
14 words
A method according to claim 1 wherein said processed matter contains live microbial cells.
Claim 7
Dependent Claim
14 words
A method according to claim 1 wherein said processed matter contains dry microbial cells.
Claim 8
Dependent Claim
14 words
A method according to claim 1 wherein said processed matter contains entrapped microbial cells.
Claim 9
Dependent Claim
14 words
A method according to claim 1 wherein said processed matter contains ground microbial cells.
Claim 10
Dependent Claim
15 words
A method according to claim 1 wherein said processed matter contains raw or refined enzyme.
Claim 11
Dependent Claim
13 words
A method according to claim 1 wherein said processed matter contains insolubilized enzyme.
Claim 12
Dependent Claim
14 words
A method according to claim 1 wherein the microorganism is Agrobacterium aureum, IFO 13647.
Claim 13
Dependent Claim
14 words
A method according to claim 1 wherein the microorganism is Agrobacterium viscosum, IFO 13652.
Claim 14
Dependent Claim
16 words
A method according to claim 1 wherein the microorganism is Rhizobium validum, IFP 13648 or 13653.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |