US4710470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing neuraminidase
Assignee: KH Neochem Co Ltd
•
Filing: 1984-08-01
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Granted: 1987-12-01
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Expires: 2004-08-01
Abstract
Abstract Neuraminidase is produced by culturing a neuraminidase producing microorganism belonging to the genus Micromonospora. The neuraminidase is useful for the quantitative determination of a sialic acid-containing substance in a sample.
Inventors
- 👤 Takayuki Uwajima
- 👤 Kazuo Aisaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:02
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N1/00; C12N1/20; C12N1/205; C12N9/2402; C12Q; C12Q1/00; C12Q1/34; C12Y; C12Y302/00; C12Y302/01; C12Y302/01018; C12R; C12R2001/00; C12R2001/01; C12R2001/29; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/867; Y10S435/868
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
A process for producing neuraminidase which comprises culturing a neuraminidase producing microorganism belonging to the genus Micromonospora in a culture medium, accumulating neuraminidase in the culture liquor and thereafter recovering the neuraminidase therefrom.
Claim 2
Dependent Claim
33 words
A process for producing neuraminidase which comprises culturing a neuraminidase producing microorganism belonging to the genus Micromonospora in a culture medium, accumulating neuraminidase in the culture liquor and thereafter recovering the neuraminidase therefrom.
Claim 3
Dependent Claim
20 words
A process according to claim 1, wherein said microorganism belongs to the species Micromonospora viridifaciens, Micromonospora globosa or Micromonospora chalcea.
Claim 4
Dependent Claim
23 words
A process according to claim 2, wherein said microorganism is Micromonospora viridifaciens ATCC 31146, Micromonospora globosa NRRL B-2673 or Micromonospora chalcea ATCC 12452.
Claim 5
Dependent Claim
28 words
A process according to claim 1, wherein said culturing step is carried out at 25° to 35° C. for 4 to 5 days at pH 6.0 to 7.0.
References Cited (Backward Citations)
GB1061095A
Cited
US3991183A
Cited
US4071408A
Cited
US4246342A
Cited
EP0038529A1
Cited
US4316954A
Cited
US4416982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |