Patent EP0176728B1 successfully refreshed from Google Patents.
US3985884A
Expired / Lapsed
US
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Complement inhibitors
Assignee: Wyeth Holdings LLC
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Filing: 1975-12-12
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Granted: 1976-10-12
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Expires: 1995-12-12
Abstract
Abstract 3,3'-ureylenebis[6-(hydroxysulfo-2H-naphtho[1,2-d]-triazol-2-yl)benzen esulfonic acids] and salts useful as complement inhibitors.
Inventors
- 👤 Ransom Brown Conrow
- 👤 Seymour Bernstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:54
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
28 words
A compound selected from those of the formula: ##SPC4## wherein A is H, Na or K, with the proviso that each A is identical in the same compound.
Claim 2
Dependent Claim
28 words
A compound selected from those of the formula: ##SPC4## wherein A is H, Na or K, with the proviso that each A is identical in the same compound.
Claim 3
Dependent Claim
9 words
A compound selected from those of the formula: ##SPC5##
Claim 4
Dependent Claim
9 words
A compound selected from those of the formula: ##SPC5##
Claim 5
Dependent Claim
14 words
A compound according to claim 2, 3,3'-ureylene-bis[6-(9-hydroxy-7-sulfo-2H-naphtho[1,2-d]triazol-2-yl)benzenesulfonic acid] tetrasodium salt of the formula: ##SPC6##
Claim 6
Independent Claim
52 words
A method of inhibiting the complement system in a body fluid which comprises subjecting said body fluid to the action of an effective complement inhibiting amount of a compound of the formula: ##SPC7## wherein A is H, Na or K, with the proviso that each A is identical in the same compound.
Claim 7
Independent Claim
52 words
A method of inhibiting the complement system in a body fluid which comprises subjecting said body fluid to the action of an effective complement inhibiting amount of a compound of the formula: ##SPC7## wherein A is H, Na or K, with the proviso that each A is identical in the same compound.
Claim 8
Dependent Claim
14 words
A method according to claim 4, wherein the compound is 3,3'-ureylenebis[6-(9-hydroxy-7-sulfo-2H-naphtho-[1,2-d]triazol-2-yl)benzenesulfonic acid] tetrasodium salt.
Claim 9
Independent Claim
49 words
A method of inhibiting the complement system in a warm-blooded animal which comprises internally administering to said animal an effective complement inhibiting amount of a compound of the formula: ##SPC8## wherein A is H, Na or K, with the proviso that each A is identical in the same compound.
Claim 10
Independent Claim
49 words
A method of inhibiting the complement system in a warm-blooded animal which comprises internally administering to said animal an effective complement inhibiting amount of a compound of the formula: ##SPC8## wherein A is H, Na or K, with the proviso that each A is identical in the same compound.
Claim 11
Dependent Claim
14 words
A method according to claim 6 wherein the compound is 3,3'-ureylenebis[6-(9-hydroxy-7-sulfo-2H-naphtho-[1,2-d]triazol-2-yl)benzenesulfonic acid] tetrasodium salt.
References Cited (Backward Citations)
US2799671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |