US4237266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glucan having antitumor activity
Assignee: Individual
•
Filing: 1978-10-24
•
Granted: 1980-12-02
•
Expires: 1998-10-24
Abstract
Abstract A simple glucan has the repeating unit structure ##STR1## and has a mean molecular weight of about two million. It is produced by culturing mycelia of Coriolus Versicolor Iwade FERM-P No. 2743, and subjecting the cultured medium to hot water extraction, ethanol precipitation, aqueous sodium acetate elution and ion exchange.
Inventors
- 👤 Mamoru Sugiura
- 👤 Hiroyuki Ohno
- 👤 Yutaro Sasaki
- 👤 Kazuaki Hama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:16
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; A61P; A61P35/00; C08; C08B; C08B37/00; C08B37/0006; C08B37/0024; C12N; C12N1/00; C12N1/14; C12N1/145; C12R; C12R2001/00; C12R2001/645; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A glucan having a basic repeating unit structure ##STR4## and an estimated molecular weight of about two million.
Claim 2
Dependent Claim
18 words
A glucan having a basic repeating unit structure ##STR4## and an estimated molecular weight of about two million.
References Cited (Backward Citations)
US3301848A
Cited
US3856775A
Cited
US3900462A
Cited
JPS4993039A
Cited
JPS4977723A
Cited
US4075405A
Cited
US4140578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |