Patent US4181804A successfully refreshed from Google Patents.
US4181804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Allantoin urocanic acid complexes
Assignee: Zeneca Inc
•
Filing: 1979-01-10
•
Granted: 1980-01-01
•
Expires: 1999-01-10
Abstract
Abstract Allantoin urocanic acid complexes and cosmetic compositions containing these complexes are disclosed.
Inventors
- 👤 Sebastian B. Mecca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:06
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4946; C; C07; C07D; C07D233/00; C07D233/54; C07D233/64; C07D233/66; C07D233/88; A61K2800/00; A61K2800/40; A61K2800/59; A61K2800/74; A61K2800/75
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
An allantoin urocanic acid complex of the formula [C 4 H 5 N 4 O 3 ] a ·[C 6 H 6 N 2 O 2 ] b wherein a and b are each about 1.
Claim 2
Dependent Claim
36 words
An allantoin urocanic acid complex of the formula [C 4 H 5 N 4 O 3 ] a ·[C 6 H 6 N 2 O 2 ] b wherein a and b are each about 1.
Claim 3
Dependent Claim
58 words
An allantoin urocanate complex of the formula [C 4 H 5 N 4 O 3 ] a ·[C 6 H 6 N 2 OX] b wherein a and b are each about 1 and refer to the number of mols of each component and X is a member selected from the group consisting of sodium, potassium and ammonium.
Claim 4
Dependent Claim
58 words
An allantoin urocanate complex of the formula [C 4 H 5 N 4 O 3 ] a ·[C 6 H 6 N 2 OX] b wherein a and b are each about 1 and refer to the number of mols of each component and X is a member selected from the group consisting of sodium, potassium and ammonium.
References Cited (Backward Citations)
US3107252A
Cited
US3275643A
Cited
US3290324A
Cited
US3290323A
Cited
US3305557A
Cited
US3632596A
Cited
US3578656A
Cited
US3898243A
Cited
US3954989A
Cited
US4025525A
Cited
US3927021A
Cited
US3970756A
Cited
US3970748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |