US3240811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selected fluorinated acyloins and 1, 2-diketones and their preparation
Assignee: EIDP Inc
•
Filing: 1961-09-06
•
Granted: 1966-03-15
•
Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 John J Drysdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/29; C07C31/00; C07C31/34; C07C45/45; C07C45/51; C07C45/54; C07C49/00; C07C49/04; C07C49/16; C07C49/167; C07C49/17; C07C49/173; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
A COMPOUND OF THE GROUP CONSISTING OF
Claim 2
Dependent Claim
7 words
A COMPOUND OF THE GROUP CONSISTING OF
Claim 3
Dependent Claim
9 words
THE PROCESS OF PRODUCING A DIONE OF THE FORMULA
Claim 4
Dependent Claim
9 words
THE PROCESS OF PRODUCING A DIONE OF THE FORMULA
References Cited (Backward Citations)
US3055913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |