US3861932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of nitrocellulose
Assignee: Revlon Inc
•
Filing: 1973-12-13
•
Granted: 1975-01-21
•
Expires: 1993-12-13
Abstract
Abstract The addition of from about 5 to 80 parts of dibenzoylmethane per 1,500 parts of nitrocellulose in solutions of nitrocellulose prevents discoloration of the nitrocellulose on exposure to light.
Inventors
- 👤 Bernard L Kabacoff
- 👤 George Mohr
- 👤 Charles M Fairchild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:44
CPC Classifications
A; A61; A61Q; A61Q3/00; A61Q3/02; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; A61K8/72; A61K8/73; A61K8/731; C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; A61K2800/00; A61K2800/40; A61K2800/52
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
A process of preventing the discoloration of nitrocellulose in nail enamel compositions which comprises adding to said nail compositions from about 5 to 80 parts by weight of dibenzoylmethane per 1,500 parts by weight of nitrocellulose.
Claim 2
Dependent Claim
25 words
A process according to claim 1 wherein about 10 to 50 parts by weight of dibenzoylmethane per 1,500 parts by weight of nitrocellulose are added.
Claim 3
Dependent Claim
28 words
A nail enamel composition comprising nitrocellulose, solvents and plasticizers which contains from about 5 to 80 parts by weight of dibenzoylmethane per 1,500 parts by weight of nitrocellulose.
Claim 4
Dependent Claim
27 words
A nail enamel composition according to claim 4 which contains from about 10 to 50 parts by weight of dibenzoylmethane per 1,500 parts by weight of nitrocellulose.
References Cited (Backward Citations)
US2693492A
Cited
US3001970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |