Patent US3966483A successfully refreshed from Google Patents.
US3966483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of formulating solution containing dispersed nitrocellulose
Assignee: Carpenter Chemical Co
•
Filing: 1975-03-24
•
Granted: 1976-06-29
•
Expires: 1995-03-24
Abstract
Abstract To formulate a nitrocellulose based protective skin covering a base material is first prepared constituting a low viscosity solution of castor oil and ether in alcohol. A thickener is formed employing a small amount of nitrocellulose solids and a plasticizer in an acetone and alcohol solution. The thickener is then thoroughly mixed with the base and the balance of nitrocellulose solids are mixed with these components.
Inventors
- 👤 Jack W. Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:33
CPC Classifications
A; A61; A61L; A61L26/00; A61L26/0009; A61L26/0023; C; C08; C08L; C08L1/00; C08L1/08; C08L1/16; C08L1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
The method of formulating a nitrocellulose based skin covering material comprising: blending a base consisting of about one part per volume of castor oil and three parts per volume of ether in five parts per volume of alcohol; preparing a thickener consisting of 30% by weight of 70% nitrocellulose solids with about 50% by weight acetone and 9% by weight plasticizer, with the balance alcohol; mixing one part by volume thickener to about three parts per volume of the base; and mixing 1 gallon part by volume of 70% nitrocellulose into the combined base and thickener.
Claim 2
Independent Claim
96 words
The method of formulating a nitrocellulose based skin covering material comprising: blending a base consisting of about one part per volume of castor oil and three parts per volume of ether in five parts per volume of alcohol; preparing a thickener consisting of 30% by weight of 70% nitrocellulose solids with about 50% by weight acetone and 9% by weight plasticizer, with the balance alcohol; mixing one part by volume thickener to about three parts per volume of the base; and mixing 1 gallon part by volume of 70% nitrocellulose into the combined base and thickener.
References Cited (Backward Citations)
US2689561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |