US3264356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dichloro-difluoro ether
Assignee: Dow Chemical Co
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Filing: 1965-02-03
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Granted: 1966-08-02
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Expires: 1985-02-03
Abstract
No abstract record available.
Inventors
- 👤 Eric R Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:45
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
2,2-DICHLORO-1, 1-DIFLUOROETHYL METHYL ETHER BEING SUBSTANTIALLY FREE FROM 2,2-DICHLORO-1-FLUOROVINYL METHYL ETHER, AND HAVING A BOILING POINT OF 47.24*C.$3*C. AT 90.3 MM. PRESSURE, A REFRACTIVE INDEX 20*/D OF 1.3858, A REFRACTIVE INDEX 25*/D OF 1.3843; A SPECIFIC GRAVITY 20*/4* OF 1.4279, A SPECIFIC GRAVITY 25*/4* OF 1.4184, AND STABILITY CHARACTERISTICS THAT PERMIT STANDING AT ROOM TEMPERATURE WITHOUT SIGNIFICANT DECOMPOSITION.
Claim 2
Dependent Claim
58 words
2,2-DICHLORO-1, 1-DIFLUOROETHYL METHYL ETHER BEING SUBSTANTIALLY FREE FROM 2,2-DICHLORO-1-FLUOROVINYL METHYL ETHER, AND HAVING A BOILING POINT OF 47.24*C.$3*C. AT 90.3 MM. PRESSURE, A REFRACTIVE INDEX 20*/D OF 1.3858, A REFRACTIVE INDEX 25*/D OF 1.3843; A SPECIFIC GRAVITY 20*/4* OF 1.4279, A SPECIFIC GRAVITY 25*/4* OF 1.4184, AND STABILITY CHARACTERISTICS THAT PERMIT STANDING AT ROOM TEMPERATURE WITHOUT SIGNIFICANT DECOMPOSITION.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |