US3342875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen capped fluorocarbon polyethers
Assignee: EIDP Inc
•
Filing: 1962-03-26
•
Granted: 1967-09-19
•
Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Selman Stanley
- 👤 Jr Wilburn Suber Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:29
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/04; C08G65/22; C08G65/223; C08G65/226; C08G65/329; C08G65/331; C08G65/3311; C08G65/3312; C08K; C08K5/00; C08K5/04; C08K5/06; C09; C09K; C09K5/00; C09K5/08; C09K5/10; G; G03; G03F; G03F5/00; G03F5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A HYDROGEN MODIFIED FLUOROCARBON ETHER HAVING FORMULAS OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
12 words
A HYDROGEN MODIFIED FLUOROCARBON ETHER HAVING FORMULAS OF THE CLASS CONSISTING OF
References Cited (Backward Citations)
CA575899A
Cited
US3114778A
Cited
GB583874A
Cited
US2500388A
Cited
US2647933A
Cited
US2704776A
Cited
US2803666A
Cited
US3180895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |