US2705207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing paint and varnish
Assignee: Individual
•
Filing: 1954-04-30
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Granted: 1955-03-29
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Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE METHOD OF REMOVING A DRIED ORGANIC FILM FORM A SUBSTRATE COMPRISING COATING SAID FILM WITH A PAINT AND VARNISH REMOVER COMPRISING A MAJOR AMOUNT OF A NORMALLY LIQUID HALOGEN-CONTAINING ALKENE OF NO MORE THAN 2 CARBON ATOMS AND HAVING A BOILING POINT LESS THAN ABOUT 100* C., AND A MINOR AMOUNT OF A CELLULOSE DERIVATIVE, AFTER THE OLD FILM HAS SOFTENED, OVERCOATING THE SOFTENED FILM WITH A SECOND COMPOSITION COMPRISING IN ADMIXTURE A NORMALLY LIQUID HYDROCARBON, AN ALCOHOL, AND AN ESTER OF AN ALIPHATIC CARBOXYLIC ACID AND AN ALCOHOL, WHICH ESTER CONTAINS FROM 3 TO 5 CARBON ATOMS, AND THEN STRIPPING THE RESULTING SOFTENED AND LOOSENED OLD FILM FROM THE SUBSTRATE.
Claim 2
Independent Claim
112 words
THE METHOD OF REMOVING A DRIED ORGANIC FILM FORM A SUBSTRATE COMPRISING COATING SAID FILM WITH A PAINT AND VARNISH REMOVER COMPRISING A MAJOR AMOUNT OF A NORMALLY LIQUID HALOGEN-CONTAINING ALKENE OF NO MORE THAN 2 CARBON ATOMS AND HAVING A BOILING POINT LESS THAN ABOUT 100* C., AND A MINOR AMOUNT OF A CELLULOSE DERIVATIVE, AFTER THE OLD FILM HAS SOFTENED, OVERCOATING THE SOFTENED FILM WITH A SECOND COMPOSITION COMPRISING IN ADMIXTURE A NORMALLY LIQUID HYDROCARBON, AN ALCOHOL, AND AN ESTER OF AN ALIPHATIC CARBOXYLIC ACID AND AN ALCOHOL, WHICH ESTER CONTAINS FROM 3 TO 5 CARBON ATOMS, AND THEN STRIPPING THE RESULTING SOFTENED AND LOOSENED OLD FILM FROM THE SUBSTRATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |