US2522968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-boiling fluorocarbons
Assignee: 3M Co
•
Filing: 1947-11-28
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Granted: 1950-09-19
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Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:38
CPC Classifications
C; C07; C07C; C07C23/00; C07C23/18; C07C19/00; C07C19/08; C07C23/02; C10; C10M; C10M1/00; C10M1/08; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/24; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/024; C10M2211/06; C10N; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A LIQUID FLUROCARBON MIXTURE BOILING WITHIN THE RANGE OF APPROXIMATELY 95* TO 160*C., CONSISTING ESSENTIALLY OF A MIXTURE OF SATURATED FLUOROCARBON COMPOUNDS HAVING AT LEAST EIGHT CARBON ATOMS PER MOLECULE, THE F:C ATOMIC RATIO OF THE LIQUIDS EXCEEDING 2.00.
Claim 2
Dependent Claim
39 words
A LIQUID FLUROCARBON MIXTURE BOILING WITHIN THE RANGE OF APPROXIMATELY 95* TO 160*C., CONSISTING ESSENTIALLY OF A MIXTURE OF SATURATED FLUOROCARBON COMPOUNDS HAVING AT LEAST EIGHT CARBON ATOMS PER MOLECULE, THE F:C ATOMIC RATIO OF THE LIQUIDS EXCEEDING 2.00.
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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |