Patent US2702255A successfully refreshed from Google Patents.
US2702255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treated plastic materials and method for producing same
Assignee: American Motors Corp
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Filing: 1951-04-14
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Granted: 1955-02-15
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Expires: 1971-04-14
Abstract
No abstract record available.
Inventors
- 👤 Luther L Yaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:39
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF IMPARTING SOLVENT RESISTANCE TO POLYSTYRENE, WHICH COMPRISES THE STEP OF APPLYING TO SAID POLYSTYRENE A COMPOSITION OF SPRAYABLE CONSISTENCY, COMPRISING A MIXED CELLULOSE ESTER IN WHICH THE ESTERIFYING GROUPS ARE PREPONDERANTLY RADICALS CONTAINING TWO CARBON ATOMS, AND NONE OF WHICH HAS MORE THAN FOUR CARBON ATOMS, AND WHICH HAS AN ACETYL CONTENT OF AT LEAST 8%; DISSOLVED IN A SOLVENT CONTAINING 5 TO 35% OF A NITRO-ALKANE CONTAINING ONE TO 3 CARBON ATOMS, THE REMAINDER OF THE SOLVENT CONSISTING ESSENTIALLY OF ALIPHATIC ALCOHOLS HAVING A BOILING RANGE BETWEEN ABOUT 140* AND 350*; AND REMOVING SAID SOLVENTS AT A RELATIVE HUMIDITY LESS THAN 60%.
Claim 2
Dependent Claim
106 words
THE PROCESS OF IMPARTING SOLVENT RESISTANCE TO POLYSTYRENE, WHICH COMPRISES THE STEP OF APPLYING TO SAID POLYSTYRENE A COMPOSITION OF SPRAYABLE CONSISTENCY, COMPRISING A MIXED CELLULOSE ESTER IN WHICH THE ESTERIFYING GROUPS ARE PREPONDERANTLY RADICALS CONTAINING TWO CARBON ATOMS, AND NONE OF WHICH HAS MORE THAN FOUR CARBON ATOMS, AND WHICH HAS AN ACETYL CONTENT OF AT LEAST 8%; DISSOLVED IN A SOLVENT CONTAINING 5 TO 35% OF A NITRO-ALKANE CONTAINING ONE TO 3 CARBON ATOMS, THE REMAINDER OF THE SOLVENT CONSISTING ESSENTIALLY OF ALIPHATIC ALCOHOLS HAVING A BOILING RANGE BETWEEN ABOUT 140* AND 350*; AND REMOVING SAID SOLVENTS AT A RELATIVE HUMIDITY LESS THAN 60%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |