US2568501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diacyl esters of fluorocarbon aldehydrols
Assignee: 3M Co
•
Filing: 1950-09-25
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Granted: 1951-09-18
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Expires: 1970-09-25
Abstract
No abstract record available.
Inventors
- 👤 Donald R Husted
- 👤 Arthur H Ahlbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:34
CPC Classifications
A; A61; A61C; A61C13/00; C; C07; C07C; C07C69/00; C07C69/62; C07C69/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AS NEW COMPOSITIONS OF MATTER, THE REACTIVE NON-CYCLIC DIACYL ESTERS OF THE FLUOROCARBON ALDEHYDROLS, HAVIONG THE GENERIC FORMULA:
Claim 2
Dependent Claim
18 words
AS NEW COMPOSITIONS OF MATTER, THE REACTIVE NON-CYCLIC DIACYL ESTERS OF THE FLUOROCARBON ALDEHYDROLS, HAVIONG THE GENERIC FORMULA:
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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |