Patent US2581453A successfully refreshed from Google Patents.
US2581453A
Expired / Lapsed
US
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High-boiling esters as solvents for polychlorotrifluoroethylene
Assignee: General Electric Co
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Filing: 1949-11-25
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Granted: 1952-01-08
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Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Murray M Sprung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/092; C08J3/093; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A SOLUTION COMPRISING (1) A SOLUTE PHASE CONSISTING ESSENTIALLY OF POLYCHLOROTRIFLUOROETHYLENE AND (2) A SOLVENT PHASE COMPRISING A HIGH BOILING ORGANIC ESTER SELECTED FROM THE CLASS CONSISTING OF DIBUTYL PHTHALATE, DIBUTYL SEBACATE, BUTYL STEARATE, DIBUTYL ADIPATE, DIOCTYL SEBACATE METHYL STEARATE, TRIBUTYL CITRATE, TRIBUTYL TRICARBALLYLATE, ACETYL TRIBUTYL CITRATE DIHEXYL TETRACHLOROPHTHALATE, DIOCTYL TERTACHLOROPHTHALATE, TRIETHYLENE GLYCOL DI-(2-ETHYLHEXOATE), AND BETA-NAPHTHYL BENZOATE, THE SOLVENT PHASE BEING MAINTAINED AT THE TEMPERATURE AT WHICH SOLUTION OF THE SOLUTE PHASE TAKES PLACE.
Claim 2
Dependent Claim
74 words
A SOLUTION COMPRISING (1) A SOLUTE PHASE CONSISTING ESSENTIALLY OF POLYCHLOROTRIFLUOROETHYLENE AND (2) A SOLVENT PHASE COMPRISING A HIGH BOILING ORGANIC ESTER SELECTED FROM THE CLASS CONSISTING OF DIBUTYL PHTHALATE, DIBUTYL SEBACATE, BUTYL STEARATE, DIBUTYL ADIPATE, DIOCTYL SEBACATE METHYL STEARATE, TRIBUTYL CITRATE, TRIBUTYL TRICARBALLYLATE, ACETYL TRIBUTYL CITRATE DIHEXYL TETRACHLOROPHTHALATE, DIOCTYL TERTACHLOROPHTHALATE, TRIETHYLENE GLYCOL DI-(2-ETHYLHEXOATE), AND BETA-NAPHTHYL BENZOATE, THE SOLVENT PHASE BEING MAINTAINED AT THE TEMPERATURE AT WHICH SOLUTION OF THE SOLUTE PHASE TAKES PLACE.
References Cited (Backward Citations)
US2484483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |