Patent US2578683A successfully refreshed from Google Patents.
US2578683A
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Protective compositions and method
Assignee: American Motors Corp
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Filing: 1947-02-21
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Granted: 1951-12-18
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Expires: 1967-02-21
Abstract
No abstract record available.
Inventors
- 👤 Stuart O Fiedler
- 👤 Bjorksten Johan
- 👤 Luther L Yaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:51
CPC Classifications
C; C09; C09D; C09D101/00; C09D101/08; C09D101/10; C09D101/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31888
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A COMPOSITION OF MATTER COMPRISING CELLULOSE ACETATE HYDROGEN PHTHALATE AND POLYMETHYL METHACRYLATE, IN THE PROPORTIONS OF ABOUT 12 TO 1, AS SOLUTES, AND THE ORGANIC SOLVENT COMPOSITION THEREFOR, SAID ORGANIC SOLVENT COMPOSITION COMPRISING FROM 7 TO 17% OF A VOLATILE SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALPHATIC KETONES AND ESTERS HAVING 1 TO 5 CARBON ATOMS, 10 TO 20% OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF NITROMETHANE AND ALIPHATIC ALCOHOLS HAVING 1 TO 4 CARBON ATOMS, AND 40 TO 60% OF A MEDIUM VOLATILE SOLVENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL MONOMETHYL ETHER, ETHYLENE GLYCOL MONOETHYL ETHER, DIACELONE ALCOHOL, BUTYL ACETATE, BUTYL PROPIONATE, AND METHYL, ETHYL AND PROPYL LACTATES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |