US2541703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid composition
Assignee: —
•
Filing: —
•
Granted: 1951-02-13
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Expires: 1968-02-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:52
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/43; C11D3/16; C11D3/18; C11D7/00; C11D7/22; C11D7/24; C11D7/28; C11D7/50; C11D7/5004; C11D7/5018; C11D7/5036; C11D7/504
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A LIQUID CLEANING COMPOSITION FOR THE COLD CLEANING OF SOLID ELECTRICALLY INSULATED ARTICLES AND PARTS TO REMOVE THEREFROM OILS, GREASES AND DIRT, COMPRISING 36 TO 63% BY WEIGHT OF A PETROLEUM NAPHTHA HAVING A DISTILLATION RANGE OF 300 TO 410* F. AND A FLASH POINT NOT LOWER THAN 100* F., THE REMAINDER OF THE COMPOSITION COMPRISING METHYLENE CHLORIDE AND PERCHLOROETHYLENE IN A WEIGHT RATIO OF 2 TO 5 PARTS OF THE FORMER TO 1 PART OF THE LATTER.
Claim 2
Dependent Claim
78 words
A LIQUID CLEANING COMPOSITION FOR THE COLD CLEANING OF SOLID ELECTRICALLY INSULATED ARTICLES AND PARTS TO REMOVE THEREFROM OILS, GREASES AND DIRT, COMPRISING 36 TO 63% BY WEIGHT OF A PETROLEUM NAPHTHA HAVING A DISTILLATION RANGE OF 300 TO 410* F. AND A FLASH POINT NOT LOWER THAN 100* F., THE REMAINDER OF THE COMPOSITION COMPRISING METHYLENE CHLORIDE AND PERCHLOROETHYLENE IN A WEIGHT RATIO OF 2 TO 5 PARTS OF THE FORMER TO 1 PART OF THE LATTER.
Claim 3
Independent Claim
105 words
A METHOD OF REMOVING OILS, GREASES AND DIRT FROM SOLID ELECTRICALLY INSULATED ARTICLES, COMPRISING SUBJECTING SUCH ARTICLES AT A TEMPERATURE NOT GREATER THAN 95* F. TO THE ACTION OF A LIQUID COMPOSITION COMPRISING 36 TO 63% BY WEIGHT OF A PETROLEUM NAPHTHA HAVING A DISTILLATION RANGE OF 300 TO 410* F. AND A FLASH POINT NOT LOWER THAN 100* F., THE REMAINDER OF SAID COMPOSITION COMPRISING METHYLENE CHLORIDE AND PERCHLOROETHYLENE IN A WEIGHT RATIO OF 2 TO 5 PARTS OF THE FORMER TO 1 PART OF THE LATTER, AND LIMITING CONTACT OF SAID ARTICLES WITH SAID LIQUID COMPOSITION TO NOT MORE THAN 10 MINUTES'' DURATION.
Claim 4
Independent Claim
105 words
A METHOD OF REMOVING OILS, GREASES AND DIRT FROM SOLID ELECTRICALLY INSULATED ARTICLES, COMPRISING SUBJECTING SUCH ARTICLES AT A TEMPERATURE NOT GREATER THAN 95* F. TO THE ACTION OF A LIQUID COMPOSITION COMPRISING 36 TO 63% BY WEIGHT OF A PETROLEUM NAPHTHA HAVING A DISTILLATION RANGE OF 300 TO 410* F. AND A FLASH POINT NOT LOWER THAN 100* F., THE REMAINDER OF SAID COMPOSITION COMPRISING METHYLENE CHLORIDE AND PERCHLOROETHYLENE IN A WEIGHT RATIO OF 2 TO 5 PARTS OF THE FORMER TO 1 PART OF THE LATTER, AND LIMITING CONTACT OF SAID ARTICLES WITH SAID LIQUID COMPOSITION TO NOT MORE THAN 10 MINUTES'' DURATION.
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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |