US4066829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Malto-dextrin poly(H-)sulfates
Assignee: Wyeth Holdings LLC
•
Filing: 1976-07-12
•
Granted: 1978-01-03
•
Expires: 1996-07-12
Abstract
Abstract Malto-dextrin poly(H-)sulfate and salts thereof useful as inhibitors of the complement system.
Inventors
- 👤 Vijay Gopalan Nair
- 👤 Joseph Peter Joseph
- 👤 Seymour Bernstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:40
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; C; C08; C08B; C08B31/00; C08B31/02; C08B31/06; C08B31/063; C08L; C08L1/00; C08L1/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
50 words
A Fro-Dex® malto-dextrin poly(H-)sulfate and salt thereof prepared by sulfating a Fro-Dex® malto-dextrin in the presence of a member selected from the group comprising alkali metal, alkaline earth metal, trialkylamine (C 1 -C 6 ), alkanolamine (C 1 -C 6 ), cycloalkanolamine (C 3 -C 6 ), pyrazine and piperidine.
Claim 2
Dependent Claim
50 words
A Fro-Dex® malto-dextrin poly(H-)sulfate and salt thereof prepared by sulfating a Fro-Dex® malto-dextrin in the presence of a member selected from the group comprising alkali metal, alkaline earth metal, trialkylamine (C 1 -C 6 ), alkanolamine (C 1 -C 6 ), cycloalkanolamine (C 3 -C 6 ), pyrazine and piperidine.
Claim 3
Dependent Claim
11 words
A compound Fro-Dex® 10 poly(H-)sulfate trimethylamine salt according to claim 1.
Claim 4
Dependent Claim
11 words
A compound Fro-Dex® 10 poly(H-)sulfate triethylamine salt, according to claim 1.
Claim 5
Dependent Claim
11 words
A compound Fro-Dex® 15 poly(H-)sulfate trimethylamine salt, according to claim 1.
Claim 6
Dependent Claim
11 words
A compound Fro-Dex® 10 poly(H-)sulfate sodium salt, according to claim 1.
Claim 7
Dependent Claim
11 words
A compound Fro-Dex® 15 poly(H-)sulfate sodium salt, according to claim 1.
Claim 8
Dependent Claim
11 words
A compound Fro-Dex® 24-924 poly(H-)sulfate trimethylamine salt, according to claim 1.
Claim 9
Dependent Claim
11 words
A compound Fro-Dex® 36 poly(H-)sulfate trimethylamine salt, according to claim 1.
Claim 10
Dependent Claim
11 words
A compound Fro-Dex® 42 poly(H-)sulfate trimethylamine salt, according to claim 1.
Claim 11
Dependent Claim
11 words
A compound Fro-Dex® 24-924 poly(H-)sulfate sodium salt, according to claim 1.
Claim 12
Dependent Claim
11 words
A compound Fro-Dex® 36 poly(H-)sulfate sodium salt, according to claim 1.
Claim 13
Dependent Claim
11 words
A compound Fro-Dex® 42 poly(H-)sulfate sodium salt, according to claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |